4f780905c5This function can return null, which will make the calls to BIO_meth_set_* trigger a null deref. Even after fixing this, there is an issue with the `BIOPointer::New(GetMethod())` call in `NodeBIO::New` because the `New` method cannot handle a null pointer despite other code already guarding for this (e.g. the `NodeBIO::New` function already checks `bio`). This patch solves the issues by adding more null checks. PR-URL: https://github.com/nodejs/node/pull/61788 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
2884 lines
85 KiB
C++
2884 lines
85 KiB
C++
#include "ncrypto.h"
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#include <openssl/bn.h>
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#include <openssl/dh.h>
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#include <openssl/evp.h>
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#include <openssl/hmac.h>
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#include <openssl/pkcs12.h>
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#include <openssl/rand.h>
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#include <openssl/x509v3.h>
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#include <algorithm>
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#include <cstring>
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#if OPENSSL_VERSION_MAJOR >= 3
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#include <openssl/provider.h>
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#endif
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namespace ncrypto {
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namespace {
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static constexpr int kX509NameFlagsRFC2253WithinUtf8JSON =
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XN_FLAG_RFC2253 & ~ASN1_STRFLGS_ESC_MSB & ~ASN1_STRFLGS_ESC_CTRL;
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} // namespace
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// ============================================================================
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ClearErrorOnReturn::ClearErrorOnReturn(CryptoErrorList* errors)
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: errors_(errors) {
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ERR_clear_error();
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}
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ClearErrorOnReturn::~ClearErrorOnReturn() {
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if (errors_ != nullptr) errors_->capture();
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ERR_clear_error();
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}
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int ClearErrorOnReturn::peekError() {
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return ERR_peek_error();
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}
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MarkPopErrorOnReturn::MarkPopErrorOnReturn(CryptoErrorList* errors)
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: errors_(errors) {
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ERR_set_mark();
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}
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MarkPopErrorOnReturn::~MarkPopErrorOnReturn() {
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if (errors_ != nullptr) errors_->capture();
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ERR_pop_to_mark();
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}
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int MarkPopErrorOnReturn::peekError() {
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return ERR_peek_error();
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}
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CryptoErrorList::CryptoErrorList(CryptoErrorList::Option option) {
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if (option == Option::CAPTURE_ON_CONSTRUCT) capture();
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}
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void CryptoErrorList::capture() {
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errors_.clear();
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while (const auto err = ERR_get_error()) {
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char buf[256];
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ERR_error_string_n(err, buf, sizeof(buf));
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errors_.emplace_front(buf);
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}
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}
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void CryptoErrorList::add(std::string error) {
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errors_.push_back(error);
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}
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std::optional<std::string> CryptoErrorList::pop_back() {
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if (errors_.empty()) return std::nullopt;
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std::string error = errors_.back();
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errors_.pop_back();
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return error;
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}
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std::optional<std::string> CryptoErrorList::pop_front() {
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if (errors_.empty()) return std::nullopt;
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std::string error = errors_.front();
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errors_.pop_front();
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return error;
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}
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// ============================================================================
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DataPointer DataPointer::Alloc(size_t len) {
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return DataPointer(OPENSSL_zalloc(len), len);
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}
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DataPointer::DataPointer(void* data, size_t length)
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: data_(data), len_(length) {}
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DataPointer::DataPointer(const Buffer<void>& buffer)
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: data_(buffer.data), len_(buffer.len) {}
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DataPointer::DataPointer(DataPointer&& other) noexcept
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: data_(other.data_), len_(other.len_) {
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other.data_ = nullptr;
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other.len_ = 0;
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}
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DataPointer& DataPointer::operator=(DataPointer&& other) noexcept {
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if (this == &other) return *this;
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this->~DataPointer();
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return *new (this) DataPointer(std::move(other));
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}
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DataPointer::~DataPointer() {
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reset();
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}
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void DataPointer::reset(void* data, size_t length) {
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if (data_ != nullptr) {
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OPENSSL_clear_free(data_, len_);
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}
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data_ = data;
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len_ = length;
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}
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void DataPointer::reset(const Buffer<void>& buffer) {
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reset(buffer.data, buffer.len);
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}
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Buffer<void> DataPointer::release() {
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Buffer<void> buf{
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.data = data_,
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.len = len_,
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};
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data_ = nullptr;
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len_ = 0;
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return buf;
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}
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// ============================================================================
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bool isFipsEnabled() {
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#if OPENSSL_VERSION_MAJOR >= 3
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return EVP_default_properties_is_fips_enabled(nullptr) == 1;
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#else
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return FIPS_mode() == 1;
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#endif
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}
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bool setFipsEnabled(bool enable, CryptoErrorList* errors) {
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if (isFipsEnabled() == enable) return true;
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ClearErrorOnReturn clearErrorOnReturn(errors);
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#if OPENSSL_VERSION_MAJOR >= 3
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return EVP_default_properties_enable_fips(nullptr, enable ? 1 : 0) == 1;
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#else
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return FIPS_mode_set(enable ? 1 : 0) == 1;
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#endif
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}
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bool testFipsEnabled() {
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#if OPENSSL_VERSION_MAJOR >= 3
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OSSL_PROVIDER* fips_provider = nullptr;
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if (OSSL_PROVIDER_available(nullptr, "fips")) {
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fips_provider = OSSL_PROVIDER_load(nullptr, "fips");
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}
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const auto enabled = fips_provider == nullptr ? 0
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: OSSL_PROVIDER_self_test(fips_provider) ? 1
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: 0;
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#else
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#ifdef OPENSSL_FIPS
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const auto enabled = FIPS_selftest() ? 1 : 0;
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#else // OPENSSL_FIPS
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const auto enabled = 0;
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#endif // OPENSSL_FIPS
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#endif
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return enabled;
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}
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// ============================================================================
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// Bignum
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BignumPointer::BignumPointer(BIGNUM* bignum) : bn_(bignum) {}
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BignumPointer::BignumPointer(const unsigned char* data, size_t len)
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: BignumPointer(BN_bin2bn(data, len, nullptr)) {}
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BignumPointer::BignumPointer(BignumPointer&& other) noexcept
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: bn_(other.release()) {}
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BignumPointer BignumPointer::New() {
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return BignumPointer(BN_new());
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}
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BignumPointer BignumPointer::NewSecure() {
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return BignumPointer(BN_secure_new());
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}
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BignumPointer& BignumPointer::operator=(BignumPointer&& other) noexcept {
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if (this == &other) return *this;
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this->~BignumPointer();
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return *new (this) BignumPointer(std::move(other));
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}
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BignumPointer::~BignumPointer() {
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reset();
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}
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void BignumPointer::reset(BIGNUM* bn) {
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bn_.reset(bn);
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}
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void BignumPointer::reset(const unsigned char* data, size_t len) {
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reset(BN_bin2bn(data, len, nullptr));
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}
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BIGNUM* BignumPointer::release() {
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return bn_.release();
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}
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size_t BignumPointer::byteLength() const {
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if (bn_ == nullptr) return 0;
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return BN_num_bytes(bn_.get());
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}
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DataPointer BignumPointer::encode() const {
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return EncodePadded(bn_.get(), byteLength());
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}
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DataPointer BignumPointer::encodePadded(size_t size) const {
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return EncodePadded(bn_.get(), size);
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}
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size_t BignumPointer::encodeInto(unsigned char* out) const {
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if (!bn_) return 0;
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return BN_bn2bin(bn_.get(), out);
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}
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size_t BignumPointer::encodePaddedInto(unsigned char* out, size_t size) const {
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if (!bn_) return 0;
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return BN_bn2binpad(bn_.get(), out, size);
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}
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DataPointer BignumPointer::Encode(const BIGNUM* bn) {
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return EncodePadded(bn, bn != nullptr ? BN_num_bytes(bn) : 0);
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}
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bool BignumPointer::setWord(unsigned long w) { // NOLINT(runtime/int)
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if (!bn_) return false;
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return BN_set_word(bn_.get(), w) == 1;
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}
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unsigned long BignumPointer::GetWord(const BIGNUM* bn) { // NOLINT(runtime/int)
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return BN_get_word(bn);
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}
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unsigned long BignumPointer::getWord() const { // NOLINT(runtime/int)
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if (!bn_) return 0;
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return GetWord(bn_.get());
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}
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DataPointer BignumPointer::EncodePadded(const BIGNUM* bn, size_t s) {
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if (bn == nullptr) return DataPointer();
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size_t size = std::max(s, static_cast<size_t>(GetByteCount(bn)));
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auto buf = DataPointer::Alloc(size);
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BN_bn2binpad(bn, reinterpret_cast<unsigned char*>(buf.get()), size);
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return buf;
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}
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size_t BignumPointer::EncodePaddedInto(const BIGNUM* bn,
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unsigned char* out,
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size_t size) {
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if (bn == nullptr) return 0;
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return BN_bn2binpad(bn, out, size);
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}
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int BignumPointer::operator<=>(const BignumPointer& other) const noexcept {
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if (bn_ == nullptr && other.bn_ != nullptr) return -1;
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if (bn_ != nullptr && other.bn_ == nullptr) return 1;
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if (bn_ == nullptr && other.bn_ == nullptr) return 0;
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return BN_cmp(bn_.get(), other.bn_.get());
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}
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int BignumPointer::operator<=>(const BIGNUM* other) const noexcept {
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if (bn_ == nullptr && other != nullptr) return -1;
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if (bn_ != nullptr && other == nullptr) return 1;
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if (bn_ == nullptr && other == nullptr) return 0;
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return BN_cmp(bn_.get(), other);
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}
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DataPointer BignumPointer::toHex() const {
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if (!bn_) return {};
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char* hex = BN_bn2hex(bn_.get());
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if (!hex) return {};
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return DataPointer(hex, strlen(hex));
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}
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int BignumPointer::GetBitCount(const BIGNUM* bn) {
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return BN_num_bits(bn);
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}
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int BignumPointer::GetByteCount(const BIGNUM* bn) {
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return BN_num_bytes(bn);
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}
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bool BignumPointer::isZero() const {
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return bn_ && BN_is_zero(bn_.get());
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}
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bool BignumPointer::isOne() const {
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return bn_ && BN_is_one(bn_.get());
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}
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const BIGNUM* BignumPointer::One() {
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return BN_value_one();
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}
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BignumPointer BignumPointer::clone() {
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if (!bn_) return {};
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return BignumPointer(BN_dup(bn_.get()));
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}
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int BignumPointer::isPrime(int nchecks,
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BignumPointer::PrimeCheckCallback innerCb) const {
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BignumCtxPointer ctx(BN_CTX_new());
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BignumGenCallbackPointer cb(nullptr);
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if (innerCb != nullptr) {
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cb = BignumGenCallbackPointer(BN_GENCB_new());
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if (!cb) [[unlikely]]
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return -1;
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BN_GENCB_set(
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cb.get(),
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// TODO(@jasnell): This could be refactored to allow inlining.
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// Not too important right now tho.
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[](int a, int b, BN_GENCB* ctx) mutable -> int {
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PrimeCheckCallback& ptr =
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*static_cast<PrimeCheckCallback*>(BN_GENCB_get_arg(ctx));
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return ptr(a, b) ? 1 : 0;
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},
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&innerCb);
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}
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return BN_is_prime_ex(get(), nchecks, ctx.get(), cb.get());
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}
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BignumPointer BignumPointer::NewPrime(const PrimeConfig& params,
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PrimeCheckCallback cb) {
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BignumPointer prime(BN_new());
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if (!prime || !prime.generate(params, std::move(cb))) {
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return {};
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}
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return prime;
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}
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bool BignumPointer::generate(const PrimeConfig& params,
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PrimeCheckCallback innerCb) const {
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// BN_generate_prime_ex() calls RAND_bytes_ex() internally.
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// Make sure the CSPRNG is properly seeded.
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std::ignore = CSPRNG(nullptr, 0);
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BignumGenCallbackPointer cb(nullptr);
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if (innerCb != nullptr) {
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cb = BignumGenCallbackPointer(BN_GENCB_new());
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if (!cb) [[unlikely]]
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return -1;
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BN_GENCB_set(
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cb.get(),
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[](int a, int b, BN_GENCB* ctx) mutable -> int {
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PrimeCheckCallback& ptr =
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*static_cast<PrimeCheckCallback*>(BN_GENCB_get_arg(ctx));
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return ptr(a, b) ? 1 : 0;
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},
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&innerCb);
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}
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if (BN_generate_prime_ex(get(),
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params.bits,
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params.safe ? 1 : 0,
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params.add.get(),
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params.rem.get(),
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cb.get()) == 0) {
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return false;
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}
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return true;
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}
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BignumPointer BignumPointer::NewSub(const BignumPointer& a,
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const BignumPointer& b) {
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BignumPointer res = New();
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if (!res) return {};
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if (!BN_sub(res.get(), a.get(), b.get())) {
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return {};
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}
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return res;
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}
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BignumPointer BignumPointer::NewLShift(size_t length) {
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BignumPointer res = New();
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if (!res) return {};
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if (!BN_lshift(res.get(), One(), length)) {
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return {};
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}
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return res;
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}
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// ============================================================================
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// Utility methods
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bool CSPRNG(void* buffer, size_t length) {
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auto buf = reinterpret_cast<unsigned char*>(buffer);
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do {
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if (1 == RAND_status()) {
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#if OPENSSL_VERSION_MAJOR >= 3
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if (1 == RAND_bytes_ex(nullptr, buf, length, 0)) {
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return true;
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}
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#else
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while (length > INT_MAX && 1 == RAND_bytes(buf, INT_MAX)) {
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buf += INT_MAX;
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length -= INT_MAX;
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}
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if (length <= INT_MAX && 1 == RAND_bytes(buf, static_cast<int>(length)))
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return true;
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#endif
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}
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#if OPENSSL_VERSION_MAJOR >= 3
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const auto code = ERR_peek_last_error();
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// A misconfigured OpenSSL 3 installation may report 1 from RAND_poll()
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// and RAND_status() but fail in RAND_bytes() if it cannot look up
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// a matching algorithm for the CSPRNG.
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if (ERR_GET_LIB(code) == ERR_LIB_RAND) {
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const auto reason = ERR_GET_REASON(code);
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if (reason == RAND_R_ERROR_INSTANTIATING_DRBG ||
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reason == RAND_R_UNABLE_TO_FETCH_DRBG ||
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reason == RAND_R_UNABLE_TO_CREATE_DRBG) {
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return false;
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}
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}
|
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#endif
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} while (1 == RAND_poll());
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|
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return false;
|
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}
|
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|
|
int NoPasswordCallback(char* buf, int size, int rwflag, void* u) {
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return 0;
|
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}
|
|
|
|
int PasswordCallback(char* buf, int size, int rwflag, void* u) {
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auto passphrase = static_cast<const Buffer<char>*>(u);
|
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if (passphrase != nullptr) {
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size_t buflen = static_cast<size_t>(size);
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size_t len = passphrase->len;
|
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if (buflen < len) return -1;
|
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memcpy(buf, reinterpret_cast<const char*>(passphrase->data), len);
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return len;
|
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}
|
|
|
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return -1;
|
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}
|
|
|
|
// Algorithm: http://howardhinnant.github.io/date_algorithms.html
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|
constexpr int days_from_epoch(int y, unsigned m, unsigned d) {
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y -= m <= 2;
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const int era = (y >= 0 ? y : y - 399) / 400;
|
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const unsigned yoe = static_cast<unsigned>(y - era * 400); // [0, 399]
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const unsigned doy =
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(153 * (m + (m > 2 ? -3 : 9)) + 2) / 5 + d - 1; // [0, 365]
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const unsigned doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; // [0, 146096]
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return era * 146097 + static_cast<int>(doe) - 719468;
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}
|
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|
|
// tm must be in UTC
|
|
// using time_t causes problems on 32-bit systems and windows x64.
|
|
int64_t PortableTimeGM(struct tm* t) {
|
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int year = t->tm_year + 1900;
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int month = t->tm_mon;
|
|
if (month > 11) {
|
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year += month / 12;
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month %= 12;
|
|
} else if (month < 0) {
|
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int years_diff = (11 - month) / 12;
|
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year -= years_diff;
|
|
month += 12 * years_diff;
|
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}
|
|
int days_since_epoch = days_from_epoch(year, month + 1, t->tm_mday);
|
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|
|
return 60 * (60 * (24LL * static_cast<int64_t>(days_since_epoch) +
|
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t->tm_hour) +
|
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t->tm_min) +
|
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t->tm_sec;
|
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}
|
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|
|
// ============================================================================
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|
// SPKAC
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|
|
bool VerifySpkac(const char* input, size_t length) {
|
|
#ifdef OPENSSL_IS_BORINGSSL
|
|
// OpenSSL uses EVP_DecodeBlock, which explicitly removes trailing characters,
|
|
// while BoringSSL uses EVP_DecodedLength and EVP_DecodeBase64, which do not.
|
|
// As such, we trim those characters here for compatibility.
|
|
//
|
|
// find_last_not_of can return npos, which is the maximum value of size_t.
|
|
// The + 1 will force a roll-ver to 0, which is the correct value. in that
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// case.
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length = std::string_view(input, length).find_last_not_of(" \n\r\t") + 1;
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#endif
|
|
NetscapeSPKIPointer spki(NETSCAPE_SPKI_b64_decode(input, length));
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if (!spki) return false;
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|
|
EVPKeyPointer pkey(X509_PUBKEY_get(spki->spkac->pubkey));
|
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return pkey ? NETSCAPE_SPKI_verify(spki.get(), pkey.get()) > 0 : false;
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}
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|
|
BIOPointer ExportPublicKey(const char* input, size_t length) {
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
|
|
#ifdef OPENSSL_IS_BORINGSSL
|
|
// OpenSSL uses EVP_DecodeBlock, which explicitly removes trailing characters,
|
|
// while BoringSSL uses EVP_DecodedLength and EVP_DecodeBase64, which do not.
|
|
// As such, we trim those characters here for compatibility.
|
|
length = std::string_view(input, length).find_last_not_of(" \n\r\t") + 1;
|
|
#endif
|
|
NetscapeSPKIPointer spki(NETSCAPE_SPKI_b64_decode(input, length));
|
|
if (!spki) return {};
|
|
|
|
EVPKeyPointer pkey(NETSCAPE_SPKI_get_pubkey(spki.get()));
|
|
if (!pkey) return {};
|
|
|
|
if (PEM_write_bio_PUBKEY(bio.get(), pkey.get()) <= 0) return {};
|
|
|
|
return bio;
|
|
}
|
|
|
|
Buffer<char> ExportChallenge(const char* input, size_t length) {
|
|
#ifdef OPENSSL_IS_BORINGSSL
|
|
// OpenSSL uses EVP_DecodeBlock, which explicitly removes trailing characters,
|
|
// while BoringSSL uses EVP_DecodedLength and EVP_DecodeBase64, which do not.
|
|
// As such, we trim those characters here for compatibility.
|
|
length = std::string_view(input, length).find_last_not_of(" \n\r\t") + 1;
|
|
#endif
|
|
NetscapeSPKIPointer sp(NETSCAPE_SPKI_b64_decode(input, length));
|
|
if (!sp) return {};
|
|
|
|
unsigned char* buf = nullptr;
|
|
int buf_size = ASN1_STRING_to_UTF8(&buf, sp->spkac->challenge);
|
|
if (buf_size >= 0) {
|
|
return {
|
|
.data = reinterpret_cast<char*>(buf),
|
|
.len = static_cast<size_t>(buf_size),
|
|
};
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
// ============================================================================
|
|
namespace {
|
|
enum class AltNameOption {
|
|
NONE,
|
|
UTF8,
|
|
};
|
|
|
|
bool IsSafeAltName(const char* name, size_t length, AltNameOption option) {
|
|
for (size_t i = 0; i < length; i++) {
|
|
char c = name[i];
|
|
switch (c) {
|
|
case '"':
|
|
case '\\':
|
|
// These mess with encoding rules.
|
|
// Fall through.
|
|
case ',':
|
|
// Commas make it impossible to split the list of subject alternative
|
|
// names unambiguously, which is why we have to escape.
|
|
// Fall through.
|
|
case '\'':
|
|
// Single quotes are unlikely to appear in any legitimate values, but
|
|
// they could be used to make a value look like it was escaped (i.e.,
|
|
// enclosed in single/double quotes).
|
|
return false;
|
|
default:
|
|
if (option == AltNameOption::UTF8) {
|
|
// In UTF8 strings, we require escaping for any ASCII control
|
|
// character, but NOT for non-ASCII characters. Note that all bytes of
|
|
// any code point that consists of more than a single byte have their
|
|
// MSB set.
|
|
if (static_cast<unsigned char>(c) < ' ' || c == '\x7f') {
|
|
return false;
|
|
}
|
|
} else {
|
|
// Check if the char is a control character or non-ASCII character.
|
|
// Note that char may or may not be a signed type. Regardless,
|
|
// non-ASCII values will always be outside of this range.
|
|
if (c < ' ' || c > '~') {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void PrintAltName(const BIOPointer& out,
|
|
const char* name,
|
|
size_t length,
|
|
AltNameOption option = AltNameOption::NONE,
|
|
const char* safe_prefix = nullptr) {
|
|
if (IsSafeAltName(name, length, option)) {
|
|
// For backward-compatibility, append "safe" names without any
|
|
// modifications.
|
|
if (safe_prefix != nullptr) {
|
|
BIO_printf(out.get(), "%s:", safe_prefix);
|
|
}
|
|
BIO_write(out.get(), name, length);
|
|
} else {
|
|
// If a name is not "safe", we cannot embed it without special
|
|
// encoding. This does not usually happen, but we don't want to hide
|
|
// it from the user either. We use JSON compatible escaping here.
|
|
BIO_write(out.get(), "\"", 1);
|
|
if (safe_prefix != nullptr) {
|
|
BIO_printf(out.get(), "%s:", safe_prefix);
|
|
}
|
|
for (size_t j = 0; j < length; j++) {
|
|
char c = static_cast<char>(name[j]);
|
|
if (c == '\\') {
|
|
BIO_write(out.get(), "\\\\", 2);
|
|
} else if (c == '"') {
|
|
BIO_write(out.get(), "\\\"", 2);
|
|
} else if ((c >= ' ' && c != ',' && c <= '~') ||
|
|
(option == AltNameOption::UTF8 && (c & 0x80))) {
|
|
// Note that the above condition explicitly excludes commas, which means
|
|
// that those are encoded as Unicode escape sequences in the "else"
|
|
// block. That is not strictly necessary, and Node.js itself would parse
|
|
// it correctly either way. We only do this to account for third-party
|
|
// code that might be splitting the string at commas (as Node.js itself
|
|
// used to do).
|
|
BIO_write(out.get(), &c, 1);
|
|
} else {
|
|
// Control character or non-ASCII character. We treat everything as
|
|
// Latin-1, which corresponds to the first 255 Unicode code points.
|
|
const char hex[] = "0123456789abcdef";
|
|
char u[] = {'\\', 'u', '0', '0', hex[(c & 0xf0) >> 4], hex[c & 0x0f]};
|
|
BIO_write(out.get(), u, sizeof(u));
|
|
}
|
|
}
|
|
BIO_write(out.get(), "\"", 1);
|
|
}
|
|
}
|
|
|
|
// This function emulates the behavior of i2v_GENERAL_NAME in a safer and less
|
|
// ambiguous way. "othername:" entries use the GENERAL_NAME_print format.
|
|
bool PrintGeneralName(const BIOPointer& out, const GENERAL_NAME* gen) {
|
|
if (gen->type == GEN_DNS) {
|
|
ASN1_IA5STRING* name = gen->d.dNSName;
|
|
BIO_write(out.get(), "DNS:", 4);
|
|
// Note that the preferred name syntax (see RFCs 5280 and 1034) with
|
|
// wildcards is a subset of what we consider "safe", so spec-compliant DNS
|
|
// names will never need to be escaped.
|
|
PrintAltName(out, reinterpret_cast<const char*>(name->data), name->length);
|
|
} else if (gen->type == GEN_EMAIL) {
|
|
ASN1_IA5STRING* name = gen->d.rfc822Name;
|
|
BIO_write(out.get(), "email:", 6);
|
|
PrintAltName(out, reinterpret_cast<const char*>(name->data), name->length);
|
|
} else if (gen->type == GEN_URI) {
|
|
ASN1_IA5STRING* name = gen->d.uniformResourceIdentifier;
|
|
BIO_write(out.get(), "URI:", 4);
|
|
// The set of "safe" names was designed to include just about any URI,
|
|
// with a few exceptions, most notably URIs that contains commas (see
|
|
// RFC 2396). In other words, most legitimate URIs will not require
|
|
// escaping.
|
|
PrintAltName(out, reinterpret_cast<const char*>(name->data), name->length);
|
|
} else if (gen->type == GEN_DIRNAME) {
|
|
// Earlier versions of Node.js used X509_NAME_oneline to print the X509_NAME
|
|
// object. The format was non standard and should be avoided. The use of
|
|
// X509_NAME_oneline is discouraged by OpenSSL but was required for backward
|
|
// compatibility. Conveniently, X509_NAME_oneline produced ASCII and the
|
|
// output was unlikely to contains commas or other characters that would
|
|
// require escaping. However, it SHOULD NOT produce ASCII output since an
|
|
// RFC5280 AttributeValue may be a UTF8String.
|
|
// Newer versions of Node.js have since switched to X509_NAME_print_ex to
|
|
// produce a better format at the cost of backward compatibility. The new
|
|
// format may contain Unicode characters and it is likely to contain commas,
|
|
// which require escaping. Fortunately, the recently safeguarded function
|
|
// PrintAltName handles all of that safely.
|
|
BIO_printf(out.get(), "DirName:");
|
|
BIOPointer tmp(BIO_new(BIO_s_mem()));
|
|
NCRYPTO_ASSERT_TRUE(tmp);
|
|
if (X509_NAME_print_ex(
|
|
tmp.get(), gen->d.dirn, 0, kX509NameFlagsRFC2253WithinUtf8JSON) <
|
|
0) {
|
|
return false;
|
|
}
|
|
char* oline = nullptr;
|
|
long n_bytes = BIO_get_mem_data(tmp.get(), &oline); // NOLINT(runtime/int)
|
|
NCRYPTO_ASSERT_TRUE(n_bytes >= 0);
|
|
PrintAltName(out,
|
|
oline,
|
|
static_cast<size_t>(n_bytes),
|
|
ncrypto::AltNameOption::UTF8,
|
|
nullptr);
|
|
} else if (gen->type == GEN_IPADD) {
|
|
BIO_printf(out.get(), "IP Address:");
|
|
const ASN1_OCTET_STRING* ip = gen->d.ip;
|
|
const unsigned char* b = ip->data;
|
|
if (ip->length == 4) {
|
|
BIO_printf(out.get(), "%d.%d.%d.%d", b[0], b[1], b[2], b[3]);
|
|
} else if (ip->length == 16) {
|
|
for (unsigned int j = 0; j < 8; j++) {
|
|
uint16_t pair = (b[2 * j] << 8) | b[2 * j + 1];
|
|
BIO_printf(out.get(), (j == 0) ? "%X" : ":%X", pair);
|
|
}
|
|
} else {
|
|
#if OPENSSL_VERSION_MAJOR >= 3
|
|
BIO_printf(out.get(), "<invalid length=%d>", ip->length);
|
|
#else
|
|
BIO_printf(out.get(), "<invalid>");
|
|
#endif
|
|
}
|
|
} else if (gen->type == GEN_RID) {
|
|
// Unlike OpenSSL's default implementation, never print the OID as text and
|
|
// instead always print its numeric representation.
|
|
char oline[256];
|
|
OBJ_obj2txt(oline, sizeof(oline), gen->d.rid, true);
|
|
BIO_printf(out.get(), "Registered ID:%s", oline);
|
|
} else if (gen->type == GEN_OTHERNAME) {
|
|
// The format that is used here is based on OpenSSL's implementation of
|
|
// GENERAL_NAME_print (as of OpenSSL 3.0.1). Earlier versions of Node.js
|
|
// instead produced the same format as i2v_GENERAL_NAME, which was somewhat
|
|
// awkward, especially when passed to translatePeerCertificate.
|
|
bool unicode = true;
|
|
const char* prefix = nullptr;
|
|
// OpenSSL 1.1.1 does not support othername in GENERAL_NAME_print and may
|
|
// not define these NIDs.
|
|
#if OPENSSL_VERSION_MAJOR >= 3
|
|
int nid = OBJ_obj2nid(gen->d.otherName->type_id);
|
|
switch (nid) {
|
|
case NID_id_on_SmtpUTF8Mailbox:
|
|
prefix = "SmtpUTF8Mailbox";
|
|
break;
|
|
case NID_XmppAddr:
|
|
prefix = "XmppAddr";
|
|
break;
|
|
case NID_SRVName:
|
|
prefix = "SRVName";
|
|
unicode = false;
|
|
break;
|
|
case NID_ms_upn:
|
|
prefix = "UPN";
|
|
break;
|
|
case NID_NAIRealm:
|
|
prefix = "NAIRealm";
|
|
break;
|
|
}
|
|
#endif // OPENSSL_VERSION_MAJOR >= 3
|
|
int val_type = gen->d.otherName->value->type;
|
|
if (prefix == nullptr || (unicode && val_type != V_ASN1_UTF8STRING) ||
|
|
(!unicode && val_type != V_ASN1_IA5STRING)) {
|
|
BIO_printf(out.get(), "othername:<unsupported>");
|
|
} else {
|
|
BIO_printf(out.get(), "othername:");
|
|
if (unicode) {
|
|
auto name = gen->d.otherName->value->value.utf8string;
|
|
PrintAltName(out,
|
|
reinterpret_cast<const char*>(name->data),
|
|
name->length,
|
|
AltNameOption::UTF8,
|
|
prefix);
|
|
} else {
|
|
auto name = gen->d.otherName->value->value.ia5string;
|
|
PrintAltName(out,
|
|
reinterpret_cast<const char*>(name->data),
|
|
name->length,
|
|
AltNameOption::NONE,
|
|
prefix);
|
|
}
|
|
}
|
|
} else if (gen->type == GEN_X400) {
|
|
// TODO(tniessen): this is what OpenSSL does, implement properly instead
|
|
BIO_printf(out.get(), "X400Name:<unsupported>");
|
|
} else if (gen->type == GEN_EDIPARTY) {
|
|
// TODO(tniessen): this is what OpenSSL does, implement properly instead
|
|
BIO_printf(out.get(), "EdiPartyName:<unsupported>");
|
|
} else {
|
|
// This is safe because X509V3_EXT_d2i would have returned nullptr in this
|
|
// case already.
|
|
unreachable();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} // namespace
|
|
|
|
bool SafeX509SubjectAltNamePrint(const BIOPointer& out, X509_EXTENSION* ext) {
|
|
auto ret = OBJ_obj2nid(X509_EXTENSION_get_object(ext));
|
|
NCRYPTO_ASSERT_EQUAL(ret, NID_subject_alt_name, "unexpected extension type");
|
|
|
|
GENERAL_NAMES* names = static_cast<GENERAL_NAMES*>(X509V3_EXT_d2i(ext));
|
|
if (names == nullptr) return false;
|
|
|
|
bool ok = true;
|
|
|
|
for (int i = 0; i < sk_GENERAL_NAME_num(names); i++) {
|
|
GENERAL_NAME* gen = sk_GENERAL_NAME_value(names, i);
|
|
|
|
if (i != 0) BIO_write(out.get(), ", ", 2);
|
|
|
|
if (!(ok = ncrypto::PrintGeneralName(out, gen))) {
|
|
break;
|
|
}
|
|
}
|
|
sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
|
|
|
|
return ok;
|
|
}
|
|
|
|
bool SafeX509InfoAccessPrint(const BIOPointer& out, X509_EXTENSION* ext) {
|
|
auto ret = OBJ_obj2nid(X509_EXTENSION_get_object(ext));
|
|
NCRYPTO_ASSERT_EQUAL(ret, NID_info_access, "unexpected extension type");
|
|
|
|
AUTHORITY_INFO_ACCESS* descs =
|
|
static_cast<AUTHORITY_INFO_ACCESS*>(X509V3_EXT_d2i(ext));
|
|
if (descs == nullptr) return false;
|
|
|
|
bool ok = true;
|
|
|
|
for (int i = 0; i < sk_ACCESS_DESCRIPTION_num(descs); i++) {
|
|
ACCESS_DESCRIPTION* desc = sk_ACCESS_DESCRIPTION_value(descs, i);
|
|
|
|
if (i != 0) BIO_write(out.get(), "\n", 1);
|
|
|
|
char objtmp[80];
|
|
i2t_ASN1_OBJECT(objtmp, sizeof(objtmp), desc->method);
|
|
BIO_printf(out.get(), "%s - ", objtmp);
|
|
if (!(ok = ncrypto::PrintGeneralName(out, desc->location))) {
|
|
break;
|
|
}
|
|
}
|
|
sk_ACCESS_DESCRIPTION_pop_free(descs, ACCESS_DESCRIPTION_free);
|
|
|
|
#if OPENSSL_VERSION_MAJOR < 3
|
|
BIO_write(out.get(), "\n", 1);
|
|
#endif
|
|
|
|
return ok;
|
|
}
|
|
|
|
// ============================================================================
|
|
// X509Pointer
|
|
|
|
X509Pointer::X509Pointer(X509* x509) : cert_(x509) {}
|
|
|
|
X509Pointer::X509Pointer(X509Pointer&& other) noexcept
|
|
: cert_(other.release()) {}
|
|
|
|
X509Pointer& X509Pointer::operator=(X509Pointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~X509Pointer();
|
|
return *new (this) X509Pointer(std::move(other));
|
|
}
|
|
|
|
X509Pointer::~X509Pointer() {
|
|
reset();
|
|
}
|
|
|
|
void X509Pointer::reset(X509* x509) {
|
|
cert_.reset(x509);
|
|
}
|
|
|
|
X509* X509Pointer::release() {
|
|
return cert_.release();
|
|
}
|
|
|
|
X509View X509Pointer::view() const {
|
|
return X509View(cert_.get());
|
|
}
|
|
|
|
BIOPointer X509View::toPEM() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
if (PEM_write_bio_X509(bio.get(), const_cast<X509*>(cert_)) <= 0) return {};
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::toDER() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
if (i2d_X509_bio(bio.get(), const_cast<X509*>(cert_)) <= 0) return {};
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getSubject() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
if (X509_NAME_print_ex(bio.get(),
|
|
X509_get_subject_name(cert_),
|
|
0,
|
|
kX509NameFlagsMultiline) <= 0) {
|
|
return {};
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getSubjectAltName() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
int index = X509_get_ext_by_NID(cert_, NID_subject_alt_name, -1);
|
|
if (index < 0 ||
|
|
!SafeX509SubjectAltNamePrint(bio, X509_get_ext(cert_, index))) {
|
|
return {};
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getIssuer() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
if (X509_NAME_print_ex(
|
|
bio.get(), X509_get_issuer_name(cert_), 0, kX509NameFlagsMultiline) <=
|
|
0) {
|
|
return {};
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getInfoAccess() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
int index = X509_get_ext_by_NID(cert_, NID_info_access, -1);
|
|
if (index < 0) return {};
|
|
if (!SafeX509InfoAccessPrint(bio, X509_get_ext(cert_, index))) {
|
|
return {};
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getValidFrom() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
ASN1_TIME_print(bio.get(), X509_get_notBefore(cert_));
|
|
return bio;
|
|
}
|
|
|
|
BIOPointer X509View::getValidTo() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
BIOPointer bio(BIO_new(BIO_s_mem()));
|
|
if (!bio) return {};
|
|
ASN1_TIME_print(bio.get(), X509_get_notAfter(cert_));
|
|
return bio;
|
|
}
|
|
|
|
int64_t X509View::getValidToTime() const {
|
|
struct tm tp;
|
|
ASN1_TIME_to_tm(X509_get0_notAfter(cert_), &tp);
|
|
return PortableTimeGM(&tp);
|
|
}
|
|
|
|
int64_t X509View::getValidFromTime() const {
|
|
struct tm tp;
|
|
ASN1_TIME_to_tm(X509_get0_notBefore(cert_), &tp);
|
|
return PortableTimeGM(&tp);
|
|
}
|
|
|
|
DataPointer X509View::getSerialNumber() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
if (ASN1_INTEGER* serial_number =
|
|
X509_get_serialNumber(const_cast<X509*>(cert_))) {
|
|
if (auto bn = BignumPointer(ASN1_INTEGER_to_BN(serial_number, nullptr))) {
|
|
return bn.toHex();
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
Result<EVPKeyPointer, int> X509View::getPublicKey() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return Result<EVPKeyPointer, int>(EVPKeyPointer{});
|
|
auto pkey = EVPKeyPointer(X509_get_pubkey(const_cast<X509*>(cert_)));
|
|
if (!pkey) return Result<EVPKeyPointer, int>(ERR_get_error());
|
|
return pkey;
|
|
}
|
|
|
|
StackOfASN1 X509View::getKeyUsage() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return {};
|
|
return StackOfASN1(static_cast<STACK_OF(ASN1_OBJECT)*>(
|
|
X509_get_ext_d2i(cert_, NID_ext_key_usage, nullptr, nullptr)));
|
|
}
|
|
|
|
bool X509View::isCA() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return false;
|
|
return X509_check_ca(const_cast<X509*>(cert_)) == 1;
|
|
}
|
|
|
|
bool X509View::isIssuedBy(const X509View& issuer) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr || issuer.cert_ == nullptr) return false;
|
|
return X509_check_issued(const_cast<X509*>(issuer.cert_),
|
|
const_cast<X509*>(cert_)) == X509_V_OK;
|
|
}
|
|
|
|
bool X509View::checkPrivateKey(const EVPKeyPointer& pkey) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr || pkey == nullptr) return false;
|
|
return X509_check_private_key(const_cast<X509*>(cert_), pkey.get()) == 1;
|
|
}
|
|
|
|
bool X509View::checkPublicKey(const EVPKeyPointer& pkey) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr || pkey == nullptr) return false;
|
|
return X509_verify(const_cast<X509*>(cert_), pkey.get()) == 1;
|
|
}
|
|
|
|
X509View::CheckMatch X509View::checkHost(const std::string_view host,
|
|
int flags,
|
|
DataPointer* peerName) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return CheckMatch::NO_MATCH;
|
|
char* peername;
|
|
switch (X509_check_host(
|
|
const_cast<X509*>(cert_), host.data(), host.size(), flags, &peername)) {
|
|
case 0:
|
|
return CheckMatch::NO_MATCH;
|
|
case 1: {
|
|
if (peername != nullptr) {
|
|
DataPointer name(peername, strlen(peername));
|
|
if (peerName != nullptr) *peerName = std::move(name);
|
|
}
|
|
return CheckMatch::MATCH;
|
|
}
|
|
case -2:
|
|
return CheckMatch::INVALID_NAME;
|
|
default:
|
|
return CheckMatch::OPERATION_FAILED;
|
|
}
|
|
}
|
|
|
|
X509View::CheckMatch X509View::checkEmail(const std::string_view email,
|
|
int flags) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return CheckMatch::NO_MATCH;
|
|
switch (X509_check_email(
|
|
const_cast<X509*>(cert_), email.data(), email.size(), flags)) {
|
|
case 0:
|
|
return CheckMatch::NO_MATCH;
|
|
case 1:
|
|
return CheckMatch::MATCH;
|
|
case -2:
|
|
return CheckMatch::INVALID_NAME;
|
|
default:
|
|
return CheckMatch::OPERATION_FAILED;
|
|
}
|
|
}
|
|
|
|
X509View::CheckMatch X509View::checkIp(const std::string_view ip,
|
|
int flags) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (cert_ == nullptr) return CheckMatch::NO_MATCH;
|
|
switch (X509_check_ip_asc(const_cast<X509*>(cert_), ip.data(), flags)) {
|
|
case 0:
|
|
return CheckMatch::NO_MATCH;
|
|
case 1:
|
|
return CheckMatch::MATCH;
|
|
case -2:
|
|
return CheckMatch::INVALID_NAME;
|
|
default:
|
|
return CheckMatch::OPERATION_FAILED;
|
|
}
|
|
}
|
|
|
|
X509View X509View::From(const SSLPointer& ssl) {
|
|
ClearErrorOnReturn clear_error_on_return;
|
|
if (!ssl) return {};
|
|
return X509View(SSL_get_certificate(ssl.get()));
|
|
}
|
|
|
|
X509View X509View::From(const SSLCtxPointer& ctx) {
|
|
ClearErrorOnReturn clear_error_on_return;
|
|
if (!ctx) return {};
|
|
return X509View(SSL_CTX_get0_certificate(ctx.get()));
|
|
}
|
|
|
|
std::optional<std::string> X509View::getFingerprint(
|
|
const EVP_MD* method) const {
|
|
unsigned int md_size;
|
|
unsigned char md[EVP_MAX_MD_SIZE];
|
|
static constexpr char hex[] = "0123456789ABCDEF";
|
|
|
|
if (X509_digest(get(), method, md, &md_size)) {
|
|
if (md_size == 0) return std::nullopt;
|
|
std::string fingerprint((md_size * 3) - 1, 0);
|
|
for (unsigned int i = 0; i < md_size; i++) {
|
|
auto idx = 3 * i;
|
|
fingerprint[idx] = hex[(md[i] & 0xf0) >> 4];
|
|
fingerprint[idx + 1] = hex[(md[i] & 0x0f)];
|
|
if (i == md_size - 1) break;
|
|
fingerprint[idx + 2] = ':';
|
|
}
|
|
|
|
return fingerprint;
|
|
}
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
X509Pointer X509View::clone() const {
|
|
ClearErrorOnReturn clear_error_on_return;
|
|
if (!cert_) return {};
|
|
return X509Pointer(X509_dup(const_cast<X509*>(cert_)));
|
|
}
|
|
|
|
Result<X509Pointer, int> X509Pointer::Parse(
|
|
Buffer<const unsigned char> buffer) {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
BIOPointer bio(BIO_new_mem_buf(buffer.data, buffer.len));
|
|
if (!bio) return Result<X509Pointer, int>(ERR_get_error());
|
|
|
|
X509Pointer pem(
|
|
PEM_read_bio_X509_AUX(bio.get(), nullptr, NoPasswordCallback, nullptr));
|
|
if (pem) return Result<X509Pointer, int>(std::move(pem));
|
|
BIO_reset(bio.get());
|
|
|
|
X509Pointer der(d2i_X509_bio(bio.get(), nullptr));
|
|
if (der) return Result<X509Pointer, int>(std::move(der));
|
|
|
|
return Result<X509Pointer, int>(ERR_get_error());
|
|
}
|
|
|
|
X509Pointer X509Pointer::IssuerFrom(const SSLPointer& ssl,
|
|
const X509View& view) {
|
|
return IssuerFrom(SSL_get_SSL_CTX(ssl.get()), view);
|
|
}
|
|
|
|
X509Pointer X509Pointer::IssuerFrom(const SSL_CTX* ctx, const X509View& cert) {
|
|
X509_STORE* store = SSL_CTX_get_cert_store(ctx);
|
|
DeleteFnPtr<X509_STORE_CTX, X509_STORE_CTX_free> store_ctx(
|
|
X509_STORE_CTX_new());
|
|
X509Pointer result;
|
|
X509* issuer;
|
|
if (store_ctx.get() != nullptr &&
|
|
X509_STORE_CTX_init(store_ctx.get(), store, nullptr, nullptr) == 1 &&
|
|
X509_STORE_CTX_get1_issuer(&issuer, store_ctx.get(), cert.get()) == 1) {
|
|
result.reset(issuer);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
X509Pointer X509Pointer::PeerFrom(const SSLPointer& ssl) {
|
|
return X509Pointer(SSL_get_peer_certificate(ssl.get()));
|
|
}
|
|
|
|
// When adding or removing errors below, please also update the list in the API
|
|
// documentation. See the "OpenSSL Error Codes" section of doc/api/errors.md
|
|
// Also *please* update the respective section in doc/api/tls.md as well
|
|
std::string_view X509Pointer::ErrorCode(int32_t err) { // NOLINT(runtime/int)
|
|
#define CASE(CODE) \
|
|
case X509_V_ERR_##CODE: \
|
|
return #CODE;
|
|
switch (err) {
|
|
CASE(UNABLE_TO_GET_ISSUER_CERT)
|
|
CASE(UNABLE_TO_GET_CRL)
|
|
CASE(UNABLE_TO_DECRYPT_CERT_SIGNATURE)
|
|
CASE(UNABLE_TO_DECRYPT_CRL_SIGNATURE)
|
|
CASE(UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY)
|
|
CASE(CERT_SIGNATURE_FAILURE)
|
|
CASE(CRL_SIGNATURE_FAILURE)
|
|
CASE(CERT_NOT_YET_VALID)
|
|
CASE(CERT_HAS_EXPIRED)
|
|
CASE(CRL_NOT_YET_VALID)
|
|
CASE(CRL_HAS_EXPIRED)
|
|
CASE(ERROR_IN_CERT_NOT_BEFORE_FIELD)
|
|
CASE(ERROR_IN_CERT_NOT_AFTER_FIELD)
|
|
CASE(ERROR_IN_CRL_LAST_UPDATE_FIELD)
|
|
CASE(ERROR_IN_CRL_NEXT_UPDATE_FIELD)
|
|
CASE(OUT_OF_MEM)
|
|
CASE(DEPTH_ZERO_SELF_SIGNED_CERT)
|
|
CASE(SELF_SIGNED_CERT_IN_CHAIN)
|
|
CASE(UNABLE_TO_GET_ISSUER_CERT_LOCALLY)
|
|
CASE(UNABLE_TO_VERIFY_LEAF_SIGNATURE)
|
|
CASE(CERT_CHAIN_TOO_LONG)
|
|
CASE(CERT_REVOKED)
|
|
CASE(INVALID_CA)
|
|
CASE(PATH_LENGTH_EXCEEDED)
|
|
CASE(INVALID_PURPOSE)
|
|
CASE(CERT_UNTRUSTED)
|
|
CASE(CERT_REJECTED)
|
|
CASE(HOSTNAME_MISMATCH)
|
|
}
|
|
#undef CASE
|
|
return "UNSPECIFIED";
|
|
}
|
|
|
|
std::optional<std::string_view> X509Pointer::ErrorReason(int32_t err) {
|
|
if (err == X509_V_OK) return std::nullopt;
|
|
return X509_verify_cert_error_string(err);
|
|
}
|
|
|
|
// ============================================================================
|
|
// BIOPointer
|
|
|
|
BIOPointer::BIOPointer(BIO* bio) : bio_(bio) {}
|
|
|
|
BIOPointer::BIOPointer(BIOPointer&& other) noexcept : bio_(other.release()) {}
|
|
|
|
BIOPointer& BIOPointer::operator=(BIOPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~BIOPointer();
|
|
return *new (this) BIOPointer(std::move(other));
|
|
}
|
|
|
|
BIOPointer::~BIOPointer() {
|
|
reset();
|
|
}
|
|
|
|
void BIOPointer::reset(BIO* bio) {
|
|
bio_.reset(bio);
|
|
}
|
|
|
|
BIO* BIOPointer::release() {
|
|
return bio_.release();
|
|
}
|
|
|
|
bool BIOPointer::resetBio() const {
|
|
if (!bio_) return 0;
|
|
return BIO_reset(bio_.get()) == 1;
|
|
}
|
|
|
|
BIOPointer BIOPointer::NewMem() {
|
|
return BIOPointer(BIO_new(BIO_s_mem()));
|
|
}
|
|
|
|
BIOPointer BIOPointer::NewSecMem() {
|
|
return BIOPointer(BIO_new(BIO_s_secmem()));
|
|
}
|
|
|
|
BIOPointer BIOPointer::New(const BIO_METHOD* method) {
|
|
if (method == nullptr) return {};
|
|
return BIOPointer(BIO_new(method));
|
|
}
|
|
|
|
BIOPointer BIOPointer::New(const void* data, size_t len) {
|
|
return BIOPointer(BIO_new_mem_buf(data, len));
|
|
}
|
|
|
|
BIOPointer BIOPointer::NewFile(std::string_view filename,
|
|
std::string_view mode) {
|
|
return BIOPointer(BIO_new_file(filename.data(), mode.data()));
|
|
}
|
|
|
|
BIOPointer BIOPointer::NewFp(FILE* fd, int close_flag) {
|
|
return BIOPointer(BIO_new_fp(fd, close_flag));
|
|
}
|
|
|
|
BIOPointer BIOPointer::New(const BIGNUM* bn) {
|
|
auto res = NewMem();
|
|
if (!res || !BN_print(res.get(), bn)) return {};
|
|
return res;
|
|
}
|
|
|
|
int BIOPointer::Write(BIOPointer* bio, std::string_view message) {
|
|
if (bio == nullptr || !*bio) return 0;
|
|
return BIO_write(bio->get(), message.data(), message.size());
|
|
}
|
|
|
|
// ============================================================================
|
|
// DHPointer
|
|
|
|
namespace {
|
|
bool EqualNoCase(const std::string_view a, const std::string_view b) {
|
|
if (a.size() != b.size()) return false;
|
|
return std::equal(a.begin(), a.end(), b.begin(), b.end(), [](char a, char b) {
|
|
return std::tolower(a) == std::tolower(b);
|
|
});
|
|
}
|
|
} // namespace
|
|
|
|
DHPointer::DHPointer(DH* dh) : dh_(dh) {}
|
|
|
|
DHPointer::DHPointer(DHPointer&& other) noexcept : dh_(other.release()) {}
|
|
|
|
DHPointer& DHPointer::operator=(DHPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~DHPointer();
|
|
return *new (this) DHPointer(std::move(other));
|
|
}
|
|
|
|
DHPointer::~DHPointer() {
|
|
reset();
|
|
}
|
|
|
|
void DHPointer::reset(DH* dh) {
|
|
dh_.reset(dh);
|
|
}
|
|
|
|
DH* DHPointer::release() {
|
|
return dh_.release();
|
|
}
|
|
|
|
BignumPointer DHPointer::FindGroup(const std::string_view name,
|
|
FindGroupOption option) {
|
|
#define V(n, p) \
|
|
if (EqualNoCase(name, n)) return BignumPointer(p(nullptr));
|
|
if (option != FindGroupOption::NO_SMALL_PRIMES) {
|
|
V("modp1", BN_get_rfc2409_prime_768);
|
|
V("modp2", BN_get_rfc2409_prime_1024);
|
|
V("modp5", BN_get_rfc3526_prime_1536);
|
|
}
|
|
V("modp14", BN_get_rfc3526_prime_2048);
|
|
V("modp15", BN_get_rfc3526_prime_3072);
|
|
V("modp16", BN_get_rfc3526_prime_4096);
|
|
V("modp17", BN_get_rfc3526_prime_6144);
|
|
V("modp18", BN_get_rfc3526_prime_8192);
|
|
#undef V
|
|
return {};
|
|
}
|
|
|
|
BignumPointer DHPointer::GetStandardGenerator() {
|
|
auto bn = BignumPointer::New();
|
|
if (!bn) return {};
|
|
if (!bn.setWord(DH_GENERATOR_2)) return {};
|
|
return bn;
|
|
}
|
|
|
|
DHPointer DHPointer::FromGroup(const std::string_view name,
|
|
FindGroupOption option) {
|
|
auto group = FindGroup(name, option);
|
|
if (!group) return {}; // Unable to find the named group.
|
|
|
|
auto generator = GetStandardGenerator();
|
|
if (!generator) return {}; // Unable to create the generator.
|
|
|
|
return New(std::move(group), std::move(generator));
|
|
}
|
|
|
|
DHPointer DHPointer::New(BignumPointer&& p, BignumPointer&& g) {
|
|
if (!p || !g) return {};
|
|
|
|
DHPointer dh(DH_new());
|
|
if (!dh) return {};
|
|
|
|
if (DH_set0_pqg(dh.get(), p.get(), nullptr, g.get()) != 1) return {};
|
|
|
|
// If the call above is successful, the DH object takes ownership of the
|
|
// BIGNUMs, so we must release them here. Unfortunately coverity does not
|
|
// know that so we need to tell it not to complain.
|
|
// coverity[resource_leak]
|
|
p.release();
|
|
// coverity[resource_leak]
|
|
g.release();
|
|
|
|
return dh;
|
|
}
|
|
|
|
DHPointer DHPointer::New(size_t bits, unsigned int generator) {
|
|
DHPointer dh(DH_new());
|
|
if (!dh) return {};
|
|
|
|
if (DH_generate_parameters_ex(dh.get(), bits, generator, nullptr) != 1) {
|
|
return {};
|
|
}
|
|
|
|
return dh;
|
|
}
|
|
|
|
DHPointer::CheckResult DHPointer::check() {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (!dh_) return DHPointer::CheckResult::NONE;
|
|
int codes = 0;
|
|
if (DH_check(dh_.get(), &codes) != 1)
|
|
return DHPointer::CheckResult::CHECK_FAILED;
|
|
return static_cast<CheckResult>(codes);
|
|
}
|
|
|
|
DHPointer::CheckPublicKeyResult DHPointer::checkPublicKey(
|
|
const BignumPointer& pub_key) {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (!pub_key || !dh_) return DHPointer::CheckPublicKeyResult::CHECK_FAILED;
|
|
int codes = 0;
|
|
if (DH_check_pub_key(dh_.get(), pub_key.get(), &codes) != 1)
|
|
return DHPointer::CheckPublicKeyResult::CHECK_FAILED;
|
|
if (codes & DH_CHECK_PUBKEY_TOO_SMALL) {
|
|
return DHPointer::CheckPublicKeyResult::TOO_SMALL;
|
|
} else if (codes & DH_CHECK_PUBKEY_TOO_SMALL) {
|
|
return DHPointer::CheckPublicKeyResult::TOO_LARGE;
|
|
} else if (codes != 0) {
|
|
return DHPointer::CheckPublicKeyResult::INVALID;
|
|
}
|
|
return CheckPublicKeyResult::NONE;
|
|
}
|
|
|
|
DataPointer DHPointer::getPrime() const {
|
|
if (!dh_) return {};
|
|
const BIGNUM* p;
|
|
DH_get0_pqg(dh_.get(), &p, nullptr, nullptr);
|
|
return BignumPointer::Encode(p);
|
|
}
|
|
|
|
DataPointer DHPointer::getGenerator() const {
|
|
if (!dh_) return {};
|
|
const BIGNUM* g;
|
|
DH_get0_pqg(dh_.get(), nullptr, nullptr, &g);
|
|
return BignumPointer::Encode(g);
|
|
}
|
|
|
|
DataPointer DHPointer::getPublicKey() const {
|
|
if (!dh_) return {};
|
|
const BIGNUM* pub_key;
|
|
DH_get0_key(dh_.get(), &pub_key, nullptr);
|
|
return BignumPointer::Encode(pub_key);
|
|
}
|
|
|
|
DataPointer DHPointer::getPrivateKey() const {
|
|
if (!dh_) return {};
|
|
const BIGNUM* pvt_key;
|
|
DH_get0_key(dh_.get(), nullptr, &pvt_key);
|
|
return BignumPointer::Encode(pvt_key);
|
|
}
|
|
|
|
DataPointer DHPointer::generateKeys() const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (!dh_) return {};
|
|
|
|
// Key generation failed
|
|
if (!DH_generate_key(dh_.get())) return {};
|
|
|
|
return getPublicKey();
|
|
}
|
|
|
|
size_t DHPointer::size() const {
|
|
if (!dh_) return 0;
|
|
int ret = DH_size(dh_.get());
|
|
// DH_size can return a -1 on error but we just want to return a 0
|
|
// in that case so we don't wrap around when returning the size_t.
|
|
return ret >= 0 ? static_cast<size_t>(ret) : 0;
|
|
}
|
|
|
|
DataPointer DHPointer::computeSecret(const BignumPointer& peer) const {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
if (!dh_ || !peer) return {};
|
|
|
|
auto dp = DataPointer::Alloc(size());
|
|
if (!dp) return {};
|
|
|
|
int size =
|
|
DH_compute_key(static_cast<uint8_t*>(dp.get()), peer.get(), dh_.get());
|
|
if (size < 0) return {};
|
|
|
|
// The size of the computed key can be smaller than the size of the DH key.
|
|
// We want to make sure that the key is correctly padded.
|
|
if (static_cast<size_t>(size) < dp.size()) {
|
|
const size_t padding = dp.size() - size;
|
|
uint8_t* data = static_cast<uint8_t*>(dp.get());
|
|
memmove(data + padding, data, size);
|
|
memset(data, 0, padding);
|
|
}
|
|
|
|
return dp;
|
|
}
|
|
|
|
bool DHPointer::setPublicKey(BignumPointer&& key) {
|
|
if (!dh_) return false;
|
|
if (DH_set0_key(dh_.get(), key.get(), nullptr) == 1) {
|
|
// If DH_set0_key returns successfully, then dh_ takes ownership of the
|
|
// BIGNUM, so we must release it here. Unfortunately coverity does not
|
|
// know that so we need to tell it not to complain.
|
|
// coverity[resource_leak]
|
|
key.release();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool DHPointer::setPrivateKey(BignumPointer&& key) {
|
|
if (!dh_) return false;
|
|
if (DH_set0_key(dh_.get(), nullptr, key.get()) == 1) {
|
|
// If DH_set0_key returns successfully, then dh_ takes ownership of the
|
|
// BIGNUM, so we must release it here. Unfortunately coverity does not
|
|
// know that so we need to tell it not to complain.
|
|
// coverity[resource_leak]
|
|
key.release();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
DataPointer DHPointer::stateless(const EVPKeyPointer& ourKey,
|
|
const EVPKeyPointer& theirKey) {
|
|
size_t out_size;
|
|
if (!ourKey || !theirKey) return {};
|
|
|
|
EVPKeyCtxPointer ctx(EVP_PKEY_CTX_new(ourKey.get(), nullptr));
|
|
if (!ctx || EVP_PKEY_derive_init(ctx.get()) <= 0 ||
|
|
EVP_PKEY_derive_set_peer(ctx.get(), theirKey.get()) <= 0 ||
|
|
EVP_PKEY_derive(ctx.get(), nullptr, &out_size) <= 0) {
|
|
return {};
|
|
}
|
|
|
|
if (out_size == 0) return {};
|
|
|
|
auto out = DataPointer::Alloc(out_size);
|
|
if (EVP_PKEY_derive(
|
|
ctx.get(), reinterpret_cast<uint8_t*>(out.get()), &out_size) <= 0) {
|
|
return {};
|
|
}
|
|
|
|
if (out_size < out.size()) {
|
|
const size_t padding = out.size() - out_size;
|
|
uint8_t* data = static_cast<uint8_t*>(out.get());
|
|
memmove(data + padding, data, out_size);
|
|
memset(data, 0, padding);
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
// ============================================================================
|
|
// KDF
|
|
|
|
const EVP_MD* getDigestByName(const std::string_view name) {
|
|
return EVP_get_digestbyname(name.data());
|
|
}
|
|
|
|
bool checkHkdfLength(const EVP_MD* md, size_t length) {
|
|
// HKDF-Expand computes up to 255 HMAC blocks, each having as many bits as
|
|
// the output of the hash function. 255 is a hard limit because HKDF appends
|
|
// an 8-bit counter to each HMAC'd message, starting at 1.
|
|
static constexpr size_t kMaxDigestMultiplier = 255;
|
|
size_t max_length = EVP_MD_size(md) * kMaxDigestMultiplier;
|
|
if (length > max_length) return false;
|
|
return true;
|
|
}
|
|
|
|
DataPointer hkdf(const EVP_MD* md,
|
|
const Buffer<const unsigned char>& key,
|
|
const Buffer<const unsigned char>& info,
|
|
const Buffer<const unsigned char>& salt,
|
|
size_t length) {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
|
|
if (!checkHkdfLength(md, length) || info.len > INT_MAX ||
|
|
salt.len > INT_MAX) {
|
|
return {};
|
|
}
|
|
|
|
EVPKeyCtxPointer ctx =
|
|
EVPKeyCtxPointer(EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr));
|
|
if (!ctx || !EVP_PKEY_derive_init(ctx.get()) ||
|
|
!EVP_PKEY_CTX_set_hkdf_md(ctx.get(), md) ||
|
|
!EVP_PKEY_CTX_add1_hkdf_info(ctx.get(), info.data, info.len)) {
|
|
return {};
|
|
}
|
|
|
|
std::string_view actual_salt;
|
|
static const char default_salt[EVP_MAX_MD_SIZE] = {0};
|
|
if (salt.len > 0) {
|
|
actual_salt = {reinterpret_cast<const char*>(salt.data), salt.len};
|
|
} else {
|
|
actual_salt = {default_salt, static_cast<unsigned>(EVP_MD_size(md))};
|
|
}
|
|
|
|
// We do not use EVP_PKEY_HKDF_MODE_EXTRACT_AND_EXPAND because and instead
|
|
// implement the extraction step ourselves because EVP_PKEY_derive does not
|
|
// handle zero-length keys, which are required for Web Crypto.
|
|
// TODO(jasnell): Once OpenSSL 1.1.1 support is dropped completely, and once
|
|
// BoringSSL is confirmed to support it, wen can hopefully drop this and use
|
|
// EVP_KDF directly which does support zero length keys.
|
|
unsigned char pseudorandom_key[EVP_MAX_MD_SIZE];
|
|
unsigned pseudorandom_key_len = sizeof(pseudorandom_key);
|
|
|
|
if (HMAC(md,
|
|
actual_salt.data(),
|
|
actual_salt.size(),
|
|
key.data,
|
|
key.len,
|
|
pseudorandom_key,
|
|
&pseudorandom_key_len) == nullptr) {
|
|
return {};
|
|
}
|
|
if (!EVP_PKEY_CTX_hkdf_mode(ctx.get(), EVP_PKEY_HKDEF_MODE_EXPAND_ONLY) ||
|
|
!EVP_PKEY_CTX_set1_hkdf_key(
|
|
ctx.get(), pseudorandom_key, pseudorandom_key_len)) {
|
|
return {};
|
|
}
|
|
|
|
auto buf = DataPointer::Alloc(length);
|
|
if (!buf) return {};
|
|
|
|
if (EVP_PKEY_derive(
|
|
ctx.get(), static_cast<unsigned char*>(buf.get()), &length) <= 0) {
|
|
return {};
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
bool checkScryptParams(uint64_t N, uint64_t r, uint64_t p, uint64_t maxmem) {
|
|
return EVP_PBE_scrypt(nullptr, 0, nullptr, 0, N, r, p, maxmem, nullptr, 0) ==
|
|
1;
|
|
}
|
|
|
|
DataPointer scrypt(const Buffer<const char>& pass,
|
|
const Buffer<const unsigned char>& salt,
|
|
uint64_t N,
|
|
uint64_t r,
|
|
uint64_t p,
|
|
uint64_t maxmem,
|
|
size_t length) {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
|
|
if (pass.len > INT_MAX || salt.len > INT_MAX) {
|
|
return {};
|
|
}
|
|
|
|
auto dp = DataPointer::Alloc(length);
|
|
if (dp && EVP_PBE_scrypt(pass.data,
|
|
pass.len,
|
|
salt.data,
|
|
salt.len,
|
|
N,
|
|
r,
|
|
p,
|
|
maxmem,
|
|
reinterpret_cast<unsigned char*>(dp.get()),
|
|
length)) {
|
|
return dp;
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
DataPointer pbkdf2(const EVP_MD* md,
|
|
const Buffer<const char>& pass,
|
|
const Buffer<const unsigned char>& salt,
|
|
uint32_t iterations,
|
|
size_t length) {
|
|
ClearErrorOnReturn clearErrorOnReturn;
|
|
|
|
if (pass.len > INT_MAX || salt.len > INT_MAX || length > INT_MAX) {
|
|
return {};
|
|
}
|
|
|
|
auto dp = DataPointer::Alloc(length);
|
|
if (dp && PKCS5_PBKDF2_HMAC(pass.data,
|
|
pass.len,
|
|
salt.data,
|
|
salt.len,
|
|
iterations,
|
|
md,
|
|
length,
|
|
reinterpret_cast<unsigned char*>(dp.get()))) {
|
|
return dp;
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
EVPKeyPointer::PrivateKeyEncodingConfig::PrivateKeyEncodingConfig(
|
|
const PrivateKeyEncodingConfig& other)
|
|
: PrivateKeyEncodingConfig(
|
|
other.output_key_object, other.format, other.type) {
|
|
cipher = other.cipher;
|
|
if (other.passphrase.has_value()) {
|
|
auto& otherPassphrase = other.passphrase.value();
|
|
auto newPassphrase = DataPointer::Alloc(otherPassphrase.size());
|
|
memcpy(newPassphrase.get(), otherPassphrase.get(), otherPassphrase.size());
|
|
passphrase = std::move(newPassphrase);
|
|
}
|
|
}
|
|
|
|
EVPKeyPointer::AsymmetricKeyEncodingConfig::AsymmetricKeyEncodingConfig(
|
|
bool output_key_object, PKFormatType format, PKEncodingType type)
|
|
: output_key_object(output_key_object), format(format), type(type) {}
|
|
|
|
EVPKeyPointer::PrivateKeyEncodingConfig&
|
|
EVPKeyPointer::PrivateKeyEncodingConfig::operator=(
|
|
const PrivateKeyEncodingConfig& other) {
|
|
if (this == &other) return *this;
|
|
this->~PrivateKeyEncodingConfig();
|
|
return *new (this) PrivateKeyEncodingConfig(other);
|
|
}
|
|
|
|
EVPKeyPointer EVPKeyPointer::New() {
|
|
return EVPKeyPointer(EVP_PKEY_new());
|
|
}
|
|
|
|
EVPKeyPointer EVPKeyPointer::NewRawPublic(
|
|
int id, const Buffer<const unsigned char>& data) {
|
|
if (id == 0) return {};
|
|
return EVPKeyPointer(
|
|
EVP_PKEY_new_raw_public_key(id, nullptr, data.data, data.len));
|
|
}
|
|
|
|
EVPKeyPointer EVPKeyPointer::NewRawPrivate(
|
|
int id, const Buffer<const unsigned char>& data) {
|
|
if (id == 0) return {};
|
|
return EVPKeyPointer(
|
|
EVP_PKEY_new_raw_private_key(id, nullptr, data.data, data.len));
|
|
}
|
|
|
|
EVPKeyPointer::EVPKeyPointer(EVP_PKEY* pkey) : pkey_(pkey) {}
|
|
|
|
EVPKeyPointer::EVPKeyPointer(EVPKeyPointer&& other) noexcept
|
|
: pkey_(other.release()) {}
|
|
|
|
EVPKeyPointer& EVPKeyPointer::operator=(EVPKeyPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~EVPKeyPointer();
|
|
return *new (this) EVPKeyPointer(std::move(other));
|
|
}
|
|
|
|
EVPKeyPointer::~EVPKeyPointer() {
|
|
reset();
|
|
}
|
|
|
|
void EVPKeyPointer::reset(EVP_PKEY* pkey) {
|
|
pkey_.reset(pkey);
|
|
}
|
|
|
|
EVP_PKEY* EVPKeyPointer::release() {
|
|
return pkey_.release();
|
|
}
|
|
|
|
int EVPKeyPointer::id(const EVP_PKEY* key) {
|
|
if (key == nullptr) return 0;
|
|
return EVP_PKEY_id(key);
|
|
}
|
|
|
|
int EVPKeyPointer::base_id(const EVP_PKEY* key) {
|
|
if (key == nullptr) return 0;
|
|
return EVP_PKEY_base_id(key);
|
|
}
|
|
|
|
int EVPKeyPointer::id() const {
|
|
return id(get());
|
|
}
|
|
|
|
int EVPKeyPointer::base_id() const {
|
|
return base_id(get());
|
|
}
|
|
|
|
int EVPKeyPointer::bits() const {
|
|
if (get() == nullptr) return 0;
|
|
return EVP_PKEY_bits(get());
|
|
}
|
|
|
|
size_t EVPKeyPointer::size() const {
|
|
if (get() == nullptr) return 0;
|
|
return EVP_PKEY_size(get());
|
|
}
|
|
|
|
EVPKeyCtxPointer EVPKeyPointer::newCtx() const {
|
|
if (!pkey_) return {};
|
|
return EVPKeyCtxPointer(EVP_PKEY_CTX_new(get(), nullptr));
|
|
}
|
|
|
|
size_t EVPKeyPointer::rawPublicKeySize() const {
|
|
if (!pkey_) return 0;
|
|
size_t len = 0;
|
|
if (EVP_PKEY_get_raw_public_key(get(), nullptr, &len) == 1) return len;
|
|
return 0;
|
|
}
|
|
|
|
size_t EVPKeyPointer::rawPrivateKeySize() const {
|
|
if (!pkey_) return 0;
|
|
size_t len = 0;
|
|
if (EVP_PKEY_get_raw_private_key(get(), nullptr, &len) == 1) return len;
|
|
return 0;
|
|
}
|
|
|
|
DataPointer EVPKeyPointer::rawPublicKey() const {
|
|
if (!pkey_) return {};
|
|
if (auto data = DataPointer::Alloc(rawPublicKeySize())) {
|
|
const Buffer<unsigned char> buf = data;
|
|
size_t len = data.size();
|
|
if (EVP_PKEY_get_raw_public_key(get(), buf.data, &len) != 1) return {};
|
|
return data;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
DataPointer EVPKeyPointer::rawPrivateKey() const {
|
|
if (!pkey_) return {};
|
|
if (auto data = DataPointer::Alloc(rawPrivateKeySize())) {
|
|
const Buffer<unsigned char> buf = data;
|
|
size_t len = data.size();
|
|
if (EVP_PKEY_get_raw_private_key(get(), buf.data, &len) != 1) return {};
|
|
return data;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
BIOPointer EVPKeyPointer::derPublicKey() const {
|
|
if (!pkey_) return {};
|
|
auto bio = BIOPointer::NewMem();
|
|
if (!bio) return {};
|
|
if (!i2d_PUBKEY_bio(bio.get(), get())) return {};
|
|
return bio;
|
|
}
|
|
|
|
bool EVPKeyPointer::assign(const ECKeyPointer& eckey) {
|
|
if (!pkey_ || !eckey) return {};
|
|
return EVP_PKEY_assign_EC_KEY(pkey_.get(), eckey.get());
|
|
}
|
|
|
|
bool EVPKeyPointer::set(const ECKeyPointer& eckey) {
|
|
if (!pkey_ || !eckey) return false;
|
|
return EVP_PKEY_set1_EC_KEY(pkey_.get(), eckey);
|
|
}
|
|
|
|
EVPKeyPointer::operator const EC_KEY*() const {
|
|
if (!pkey_) return nullptr;
|
|
return EVP_PKEY_get0_EC_KEY(pkey_.get());
|
|
}
|
|
|
|
namespace {
|
|
EVPKeyPointer::ParseKeyResult TryParsePublicKeyInner(const BIOPointer& bp,
|
|
const char* name,
|
|
auto&& parse) {
|
|
if (!bp.resetBio()) {
|
|
return EVPKeyPointer::ParseKeyResult(EVPKeyPointer::PKParseError::FAILED);
|
|
}
|
|
unsigned char* der_data;
|
|
long der_len; // NOLINT(runtime/int)
|
|
|
|
// This skips surrounding data and decodes PEM to DER.
|
|
{
|
|
MarkPopErrorOnReturn mark_pop_error_on_return;
|
|
if (PEM_bytes_read_bio(
|
|
&der_data, &der_len, nullptr, name, bp.get(), nullptr, nullptr) !=
|
|
1)
|
|
return EVPKeyPointer::ParseKeyResult(
|
|
EVPKeyPointer::PKParseError::NOT_RECOGNIZED);
|
|
}
|
|
DataPointer data(der_data, der_len);
|
|
|
|
// OpenSSL might modify the pointer, so we need to make a copy before parsing.
|
|
const unsigned char* p = der_data;
|
|
EVPKeyPointer pkey(parse(&p, der_len));
|
|
if (!pkey)
|
|
return EVPKeyPointer::ParseKeyResult(EVPKeyPointer::PKParseError::FAILED);
|
|
return EVPKeyPointer::ParseKeyResult(std::move(pkey));
|
|
}
|
|
|
|
constexpr bool IsASN1Sequence(const unsigned char* data,
|
|
size_t size,
|
|
size_t* data_offset,
|
|
size_t* data_size) {
|
|
if (size < 2 || data[0] != 0x30) return false;
|
|
|
|
if (data[1] & 0x80) {
|
|
// Long form.
|
|
size_t n_bytes = data[1] & ~0x80;
|
|
if (n_bytes + 2 > size || n_bytes > sizeof(size_t)) return false;
|
|
size_t length = 0;
|
|
for (size_t i = 0; i < n_bytes; i++) length = (length << 8) | data[i + 2];
|
|
*data_offset = 2 + n_bytes;
|
|
*data_size = std::min(size - 2 - n_bytes, length);
|
|
} else {
|
|
// Short form.
|
|
*data_offset = 2;
|
|
*data_size = std::min<size_t>(size - 2, data[1]);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
constexpr bool IsEncryptedPrivateKeyInfo(
|
|
const Buffer<const unsigned char>& buffer) {
|
|
// Both PrivateKeyInfo and EncryptedPrivateKeyInfo start with a SEQUENCE.
|
|
if (buffer.len == 0 || buffer.data == nullptr) return false;
|
|
size_t offset, len;
|
|
if (!IsASN1Sequence(buffer.data, buffer.len, &offset, &len)) return false;
|
|
|
|
// A PrivateKeyInfo sequence always starts with an integer whereas an
|
|
// EncryptedPrivateKeyInfo starts with an AlgorithmIdentifier.
|
|
return len >= 1 && buffer.data[offset] != 2;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
bool EVPKeyPointer::IsRSAPrivateKey(const Buffer<const unsigned char>& buffer) {
|
|
// Both RSAPrivateKey and RSAPublicKey structures start with a SEQUENCE.
|
|
size_t offset, len;
|
|
if (!IsASN1Sequence(buffer.data, buffer.len, &offset, &len)) return false;
|
|
|
|
// An RSAPrivateKey sequence always starts with a single-byte integer whose
|
|
// value is either 0 or 1, whereas an RSAPublicKey starts with the modulus
|
|
// (which is the product of two primes and therefore at least 4), so we can
|
|
// decide the type of the structure based on the first three bytes of the
|
|
// sequence.
|
|
return len >= 3 && buffer.data[offset] == 2 && buffer.data[offset + 1] == 1 &&
|
|
!(buffer.data[offset + 2] & 0xfe);
|
|
}
|
|
|
|
EVPKeyPointer::ParseKeyResult EVPKeyPointer::TryParsePublicKeyPEM(
|
|
const Buffer<const unsigned char>& buffer) {
|
|
auto bp = BIOPointer::New(buffer.data, buffer.len);
|
|
if (!bp) return ParseKeyResult(PKParseError::FAILED);
|
|
|
|
// Try parsing as SubjectPublicKeyInfo (SPKI) first.
|
|
if (auto ret = TryParsePublicKeyInner(
|
|
bp,
|
|
"PUBLIC KEY",
|
|
[](const unsigned char** p, long l) { // NOLINT(runtime/int)
|
|
return d2i_PUBKEY(nullptr, p, l);
|
|
})) {
|
|
return ret;
|
|
}
|
|
|
|
// Maybe it is PKCS#1.
|
|
if (auto ret = TryParsePublicKeyInner(
|
|
bp,
|
|
"RSA PUBLIC KEY",
|
|
[](const unsigned char** p, long l) { // NOLINT(runtime/int)
|
|
return d2i_PublicKey(EVP_PKEY_RSA, nullptr, p, l);
|
|
})) {
|
|
return ret;
|
|
}
|
|
|
|
// X.509 fallback.
|
|
if (auto ret = TryParsePublicKeyInner(
|
|
bp,
|
|
"CERTIFICATE",
|
|
[](const unsigned char** p, long l) { // NOLINT(runtime/int)
|
|
X509Pointer x509(d2i_X509(nullptr, p, l));
|
|
return x509 ? X509_get_pubkey(x509.get()) : nullptr;
|
|
})) {
|
|
return ret;
|
|
};
|
|
|
|
return ParseKeyResult(PKParseError::NOT_RECOGNIZED);
|
|
}
|
|
|
|
EVPKeyPointer::ParseKeyResult EVPKeyPointer::TryParsePublicKey(
|
|
const PublicKeyEncodingConfig& config,
|
|
const Buffer<const unsigned char>& buffer) {
|
|
if (config.format == PKFormatType::PEM) {
|
|
return TryParsePublicKeyPEM(buffer);
|
|
}
|
|
|
|
if (config.format != PKFormatType::DER) {
|
|
return ParseKeyResult(PKParseError::FAILED);
|
|
}
|
|
|
|
const unsigned char* start = buffer.data;
|
|
|
|
EVP_PKEY* key = nullptr;
|
|
|
|
if (config.type == PKEncodingType::PKCS1 &&
|
|
(key = d2i_PublicKey(EVP_PKEY_RSA, nullptr, &start, buffer.len))) {
|
|
return EVPKeyPointer::ParseKeyResult(EVPKeyPointer(key));
|
|
}
|
|
|
|
if (config.type == PKEncodingType::SPKI &&
|
|
(key = d2i_PUBKEY(nullptr, &start, buffer.len))) {
|
|
return EVPKeyPointer::ParseKeyResult(EVPKeyPointer(key));
|
|
}
|
|
|
|
return ParseKeyResult(PKParseError::FAILED);
|
|
}
|
|
|
|
namespace {
|
|
Buffer<char> GetPassphrase(
|
|
const EVPKeyPointer::PrivateKeyEncodingConfig& config) {
|
|
Buffer<char> pass{
|
|
// OpenSSL will not actually dereference this pointer, so it can be any
|
|
// non-null pointer. We cannot assert that directly, which is why we
|
|
// intentionally use a pointer that will likely cause a segmentation fault
|
|
// when dereferenced.
|
|
.data = reinterpret_cast<char*>(-1),
|
|
.len = 0,
|
|
};
|
|
if (config.passphrase.has_value()) {
|
|
auto& passphrase = config.passphrase.value();
|
|
// The pass.data can't be a nullptr, even if the len is zero or else
|
|
// openssl will prompt for a password and we really don't want that.
|
|
if (passphrase.get() != nullptr) {
|
|
pass.data = static_cast<char*>(passphrase.get());
|
|
}
|
|
pass.len = passphrase.size();
|
|
}
|
|
return pass;
|
|
}
|
|
} // namespace
|
|
|
|
EVPKeyPointer::ParseKeyResult EVPKeyPointer::TryParsePrivateKey(
|
|
const PrivateKeyEncodingConfig& config,
|
|
const Buffer<const unsigned char>& buffer) {
|
|
static constexpr auto keyOrError = [](EVPKeyPointer pkey,
|
|
bool had_passphrase = false) {
|
|
if (int err = ERR_peek_error()) {
|
|
if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
|
|
ERR_GET_REASON(err) == PEM_R_BAD_PASSWORD_READ && !had_passphrase) {
|
|
return ParseKeyResult(PKParseError::NEED_PASSPHRASE);
|
|
}
|
|
return ParseKeyResult(PKParseError::FAILED, err);
|
|
}
|
|
if (!pkey) return ParseKeyResult(PKParseError::FAILED);
|
|
return ParseKeyResult(std::move(pkey));
|
|
};
|
|
|
|
auto bio = BIOPointer::New(buffer);
|
|
if (!bio) return ParseKeyResult(PKParseError::FAILED);
|
|
|
|
auto passphrase = GetPassphrase(config);
|
|
|
|
if (config.format == PKFormatType::PEM) {
|
|
auto key = PEM_read_bio_PrivateKey(
|
|
bio.get(),
|
|
nullptr,
|
|
PasswordCallback,
|
|
config.passphrase.has_value() ? &passphrase : nullptr);
|
|
return keyOrError(EVPKeyPointer(key), config.passphrase.has_value());
|
|
}
|
|
|
|
if (config.format != PKFormatType::DER) {
|
|
return ParseKeyResult(PKParseError::FAILED);
|
|
}
|
|
|
|
switch (config.type) {
|
|
case PKEncodingType::PKCS1: {
|
|
auto key = d2i_PrivateKey_bio(bio.get(), nullptr);
|
|
return keyOrError(EVPKeyPointer(key));
|
|
}
|
|
case PKEncodingType::PKCS8: {
|
|
if (IsEncryptedPrivateKeyInfo(buffer)) {
|
|
auto key = d2i_PKCS8PrivateKey_bio(
|
|
bio.get(),
|
|
nullptr,
|
|
PasswordCallback,
|
|
config.passphrase.has_value() ? &passphrase : nullptr);
|
|
return keyOrError(EVPKeyPointer(key), config.passphrase.has_value());
|
|
}
|
|
|
|
PKCS8Pointer p8inf(d2i_PKCS8_PRIV_KEY_INFO_bio(bio.get(), nullptr));
|
|
if (!p8inf) {
|
|
return ParseKeyResult(PKParseError::FAILED, ERR_peek_error());
|
|
}
|
|
return keyOrError(EVPKeyPointer(EVP_PKCS82PKEY(p8inf.get())));
|
|
}
|
|
case PKEncodingType::SEC1: {
|
|
auto key = d2i_PrivateKey_bio(bio.get(), nullptr);
|
|
return keyOrError(EVPKeyPointer(key));
|
|
}
|
|
default: {
|
|
return ParseKeyResult(PKParseError::FAILED, ERR_peek_error());
|
|
}
|
|
};
|
|
}
|
|
|
|
Result<BIOPointer, bool> EVPKeyPointer::writePrivateKey(
|
|
const PrivateKeyEncodingConfig& config) const {
|
|
if (config.format == PKFormatType::JWK) {
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
|
|
auto bio = BIOPointer::NewMem();
|
|
if (!bio) {
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
|
|
auto passphrase = GetPassphrase(config);
|
|
MarkPopErrorOnReturn mark_pop_error_on_return;
|
|
bool err;
|
|
|
|
switch (config.type) {
|
|
case PKEncodingType::PKCS1: {
|
|
// PKCS1 is only permitted for RSA keys.
|
|
if (id() != EVP_PKEY_RSA) return Result<BIOPointer, bool>(false);
|
|
|
|
#if OPENSSL_VERSION_MAJOR >= 3
|
|
const RSA* rsa = EVP_PKEY_get0_RSA(get());
|
|
#else
|
|
RSA* rsa = EVP_PKEY_get0_RSA(get());
|
|
#endif
|
|
switch (config.format) {
|
|
case PKFormatType::PEM: {
|
|
err = PEM_write_bio_RSAPrivateKey(
|
|
bio.get(),
|
|
rsa,
|
|
config.cipher,
|
|
reinterpret_cast<unsigned char*>(passphrase.data),
|
|
passphrase.len,
|
|
nullptr,
|
|
nullptr) != 1;
|
|
break;
|
|
}
|
|
case PKFormatType::DER: {
|
|
// Encoding PKCS1 as DER. This variation does not permit encryption.
|
|
err = i2d_RSAPrivateKey_bio(bio.get(), rsa) != 1;
|
|
break;
|
|
}
|
|
default: {
|
|
// Should never get here.
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case PKEncodingType::PKCS8: {
|
|
switch (config.format) {
|
|
case PKFormatType::PEM: {
|
|
// Encode PKCS#8 as PEM.
|
|
err = PEM_write_bio_PKCS8PrivateKey(bio.get(),
|
|
get(),
|
|
config.cipher,
|
|
passphrase.data,
|
|
passphrase.len,
|
|
nullptr,
|
|
nullptr) != 1;
|
|
break;
|
|
}
|
|
case PKFormatType::DER: {
|
|
err = i2d_PKCS8PrivateKey_bio(bio.get(),
|
|
get(),
|
|
config.cipher,
|
|
passphrase.data,
|
|
passphrase.len,
|
|
nullptr,
|
|
nullptr) != 1;
|
|
break;
|
|
}
|
|
default: {
|
|
// Should never get here.
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case PKEncodingType::SEC1: {
|
|
// SEC1 is only permitted for EC keys
|
|
if (id() != EVP_PKEY_EC) return Result<BIOPointer, bool>(false);
|
|
|
|
#if OPENSSL_VERSION_MAJOR >= 3
|
|
const EC_KEY* ec = EVP_PKEY_get0_EC_KEY(get());
|
|
#else
|
|
EC_KEY* ec = EVP_PKEY_get0_EC_KEY(get());
|
|
#endif
|
|
switch (config.format) {
|
|
case PKFormatType::PEM: {
|
|
err = PEM_write_bio_ECPrivateKey(
|
|
bio.get(),
|
|
ec,
|
|
config.cipher,
|
|
reinterpret_cast<unsigned char*>(passphrase.data),
|
|
passphrase.len,
|
|
nullptr,
|
|
nullptr) != 1;
|
|
break;
|
|
}
|
|
case PKFormatType::DER: {
|
|
// Encoding SEC1 as DER. This variation does not permit encryption.
|
|
err = i2d_ECPrivateKey_bio(bio.get(), ec) != 1;
|
|
break;
|
|
}
|
|
default: {
|
|
// Should never get here.
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
// Not a valid private key encoding
|
|
return Result<BIOPointer, bool>(false);
|
|
}
|
|
}
|
|
|
|
if (err) {
|
|
// Failed to encode the private key.
|
|
return Result<BIOPointer, bool>(false,
|
|
mark_pop_error_on_return.peekError());
|
|
}
|
|
|
|
return bio;
|
|
}
|
|
|
|
Result<BIOPointer, bool> EVPKeyPointer::writePublicKey(
|
|
const ncrypto::EVPKeyPointer::PublicKeyEncodingConfig& config) const {
|
|
auto bio = BIOPointer::NewMem();
|
|
if (!bio) return Result<BIOPointer, bool>(false);
|
|
|
|
MarkPopErrorOnReturn mark_pop_error_on_return;
|
|
|
|
if (config.type == ncrypto::EVPKeyPointer::PKEncodingType::PKCS1) {
|
|
// PKCS#1 is only valid for RSA keys.
|
|
#if OPENSSL_VERSION_MAJOR >= 3
|
|
const RSA* rsa = EVP_PKEY_get0_RSA(get());
|
|
#else
|
|
RSA* rsa = EVP_PKEY_get0_RSA(get());
|
|
#endif
|
|
if (config.format == ncrypto::EVPKeyPointer::PKFormatType::PEM) {
|
|
// Encode PKCS#1 as PEM.
|
|
if (PEM_write_bio_RSAPublicKey(bio.get(), rsa) != 1) {
|
|
return Result<BIOPointer, bool>(false,
|
|
mark_pop_error_on_return.peekError());
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
// Encode PKCS#1 as DER.
|
|
if (i2d_RSAPublicKey_bio(bio.get(), rsa) != 1) {
|
|
return Result<BIOPointer, bool>(false,
|
|
mark_pop_error_on_return.peekError());
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
if (config.format == ncrypto::EVPKeyPointer::PKFormatType::PEM) {
|
|
// Encode SPKI as PEM.
|
|
if (PEM_write_bio_PUBKEY(bio.get(), get()) != 1) {
|
|
return Result<BIOPointer, bool>(false,
|
|
mark_pop_error_on_return.peekError());
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
// Encode SPKI as DER.
|
|
if (i2d_PUBKEY_bio(bio.get(), get()) != 1) {
|
|
return Result<BIOPointer, bool>(false,
|
|
mark_pop_error_on_return.peekError());
|
|
}
|
|
return bio;
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
SSLPointer::SSLPointer(SSL* ssl) : ssl_(ssl) {}
|
|
|
|
SSLPointer::SSLPointer(SSLPointer&& other) noexcept : ssl_(other.release()) {}
|
|
|
|
SSLPointer& SSLPointer::operator=(SSLPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~SSLPointer();
|
|
return *new (this) SSLPointer(std::move(other));
|
|
}
|
|
|
|
SSLPointer::~SSLPointer() {
|
|
reset();
|
|
}
|
|
|
|
void SSLPointer::reset(SSL* ssl) {
|
|
ssl_.reset(ssl);
|
|
}
|
|
|
|
SSL* SSLPointer::release() {
|
|
return ssl_.release();
|
|
}
|
|
|
|
SSLPointer SSLPointer::New(const SSLCtxPointer& ctx) {
|
|
if (!ctx) return {};
|
|
return SSLPointer(SSL_new(ctx.get()));
|
|
}
|
|
|
|
void SSLPointer::getCiphers(
|
|
std::function<void(const std::string_view)> cb) const {
|
|
if (!ssl_) return;
|
|
STACK_OF(SSL_CIPHER)* ciphers = SSL_get_ciphers(get());
|
|
|
|
// TLSv1.3 ciphers aren't listed by EVP. There are only 5, we could just
|
|
// document them, but since there are only 5, easier to just add them manually
|
|
// and not have to explain their absence in the API docs. They are lower-cased
|
|
// because the docs say they will be.
|
|
static constexpr const char* TLS13_CIPHERS[] = {
|
|
"tls_aes_256_gcm_sha384",
|
|
"tls_chacha20_poly1305_sha256",
|
|
"tls_aes_128_gcm_sha256",
|
|
"tls_aes_128_ccm_8_sha256",
|
|
"tls_aes_128_ccm_sha256"};
|
|
|
|
const int n = sk_SSL_CIPHER_num(ciphers);
|
|
|
|
for (int i = 0; i < n; ++i) {
|
|
const SSL_CIPHER* cipher = sk_SSL_CIPHER_value(ciphers, i);
|
|
cb(SSL_CIPHER_get_name(cipher));
|
|
}
|
|
|
|
for (unsigned i = 0; i < 5; ++i) {
|
|
cb(TLS13_CIPHERS[i]);
|
|
}
|
|
}
|
|
|
|
bool SSLPointer::setSession(const SSLSessionPointer& session) {
|
|
if (!session || !ssl_) return false;
|
|
return SSL_set_session(get(), session.get()) == 1;
|
|
}
|
|
|
|
bool SSLPointer::setSniContext(const SSLCtxPointer& ctx) const {
|
|
if (!ctx) return false;
|
|
auto x509 = ncrypto::X509View::From(ctx);
|
|
if (!x509) return false;
|
|
EVP_PKEY* pkey = SSL_CTX_get0_privatekey(ctx.get());
|
|
STACK_OF(X509) * chain;
|
|
int err = SSL_CTX_get0_chain_certs(ctx.get(), &chain);
|
|
if (err == 1) err = SSL_use_certificate(get(), x509);
|
|
if (err == 1) err = SSL_use_PrivateKey(get(), pkey);
|
|
if (err == 1 && chain != nullptr) err = SSL_set1_chain(get(), chain);
|
|
return err == 1;
|
|
}
|
|
|
|
std::optional<uint32_t> SSLPointer::verifyPeerCertificate() const {
|
|
if (!ssl_) return std::nullopt;
|
|
if (X509Pointer::PeerFrom(*this)) {
|
|
return SSL_get_verify_result(get());
|
|
}
|
|
|
|
const SSL_CIPHER* curr_cipher = SSL_get_current_cipher(get());
|
|
const SSL_SESSION* sess = SSL_get_session(get());
|
|
// Allow no-cert for PSK authentication in TLS1.2 and lower.
|
|
// In TLS1.3 check that session was reused because TLS1.3 PSK
|
|
// looks like session resumption.
|
|
if (SSL_CIPHER_get_auth_nid(curr_cipher) == NID_auth_psk ||
|
|
(SSL_SESSION_get_protocol_version(sess) == TLS1_3_VERSION &&
|
|
SSL_session_reused(get()))) {
|
|
return X509_V_OK;
|
|
}
|
|
|
|
return std::nullopt;
|
|
}
|
|
|
|
const std::string_view SSLPointer::getClientHelloAlpn() const {
|
|
if (ssl_ == nullptr) return {};
|
|
const unsigned char* buf;
|
|
size_t len;
|
|
size_t rem;
|
|
|
|
if (!SSL_client_hello_get0_ext(
|
|
get(),
|
|
TLSEXT_TYPE_application_layer_protocol_negotiation,
|
|
&buf,
|
|
&rem) ||
|
|
rem < 2) {
|
|
return {};
|
|
}
|
|
|
|
len = (buf[0] << 8) | buf[1];
|
|
if (len + 2 != rem) return {};
|
|
return reinterpret_cast<const char*>(buf + 3);
|
|
}
|
|
|
|
const std::string_view SSLPointer::getClientHelloServerName() const {
|
|
if (ssl_ == nullptr) return {};
|
|
const unsigned char* buf;
|
|
size_t len;
|
|
size_t rem;
|
|
|
|
if (!SSL_client_hello_get0_ext(get(), TLSEXT_TYPE_server_name, &buf, &rem) ||
|
|
rem <= 2) {
|
|
return {};
|
|
}
|
|
|
|
len = (*buf << 8) | *(buf + 1);
|
|
if (len + 2 != rem) return {};
|
|
rem = len;
|
|
|
|
if (rem == 0 || *(buf + 2) != TLSEXT_NAMETYPE_host_name) return {};
|
|
rem--;
|
|
if (rem <= 2) return {};
|
|
len = (*(buf + 3) << 8) | *(buf + 4);
|
|
if (len + 2 > rem) return {};
|
|
return reinterpret_cast<const char*>(buf + 5);
|
|
}
|
|
|
|
std::optional<const std::string_view> SSLPointer::GetServerName(
|
|
const SSL* ssl) {
|
|
if (ssl == nullptr) return std::nullopt;
|
|
auto res = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
|
|
if (res == nullptr) return std::nullopt;
|
|
return res;
|
|
}
|
|
|
|
std::optional<const std::string_view> SSLPointer::getServerName() const {
|
|
if (!ssl_) return std::nullopt;
|
|
return GetServerName(get());
|
|
}
|
|
|
|
X509View SSLPointer::getCertificate() const {
|
|
if (!ssl_) return {};
|
|
ClearErrorOnReturn clear_error_on_return;
|
|
return ncrypto::X509View(SSL_get_certificate(get()));
|
|
}
|
|
|
|
const SSL_CIPHER* SSLPointer::getCipher() const {
|
|
if (!ssl_) return nullptr;
|
|
return SSL_get_current_cipher(get());
|
|
}
|
|
|
|
bool SSLPointer::isServer() const {
|
|
return SSL_is_server(get()) != 0;
|
|
}
|
|
|
|
EVPKeyPointer SSLPointer::getPeerTempKey() const {
|
|
if (!ssl_) return {};
|
|
EVP_PKEY* raw_key = nullptr;
|
|
if (!SSL_get_peer_tmp_key(get(), &raw_key)) return {};
|
|
return EVPKeyPointer(raw_key);
|
|
}
|
|
|
|
SSLCtxPointer::SSLCtxPointer(SSL_CTX* ctx) : ctx_(ctx) {}
|
|
|
|
SSLCtxPointer::SSLCtxPointer(SSLCtxPointer&& other) noexcept
|
|
: ctx_(other.release()) {}
|
|
|
|
SSLCtxPointer& SSLCtxPointer::operator=(SSLCtxPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~SSLCtxPointer();
|
|
return *new (this) SSLCtxPointer(std::move(other));
|
|
}
|
|
|
|
SSLCtxPointer::~SSLCtxPointer() {
|
|
reset();
|
|
}
|
|
|
|
void SSLCtxPointer::reset(SSL_CTX* ctx) {
|
|
ctx_.reset(ctx);
|
|
}
|
|
|
|
void SSLCtxPointer::reset(const SSL_METHOD* method) {
|
|
ctx_.reset(SSL_CTX_new(method));
|
|
}
|
|
|
|
SSL_CTX* SSLCtxPointer::release() {
|
|
return ctx_.release();
|
|
}
|
|
|
|
SSLCtxPointer SSLCtxPointer::NewServer() {
|
|
return SSLCtxPointer(SSL_CTX_new(TLS_server_method()));
|
|
}
|
|
|
|
SSLCtxPointer SSLCtxPointer::NewClient() {
|
|
return SSLCtxPointer(SSL_CTX_new(TLS_client_method()));
|
|
}
|
|
|
|
SSLCtxPointer SSLCtxPointer::New(const SSL_METHOD* method) {
|
|
return SSLCtxPointer(SSL_CTX_new(method));
|
|
}
|
|
|
|
bool SSLCtxPointer::setGroups(const char* groups) {
|
|
return SSL_CTX_set1_groups_list(get(), groups) == 1;
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
const Cipher Cipher::FromName(const char* name) {
|
|
return Cipher(EVP_get_cipherbyname(name));
|
|
}
|
|
|
|
const Cipher Cipher::FromNid(int nid) {
|
|
return Cipher(EVP_get_cipherbynid(nid));
|
|
}
|
|
|
|
const Cipher Cipher::FromCtx(const CipherCtxPointer& ctx) {
|
|
return Cipher(EVP_CIPHER_CTX_cipher(ctx.get()));
|
|
}
|
|
|
|
int Cipher::getMode() const {
|
|
if (!cipher_) return 0;
|
|
return EVP_CIPHER_mode(cipher_);
|
|
}
|
|
|
|
int Cipher::getIvLength() const {
|
|
if (!cipher_) return 0;
|
|
return EVP_CIPHER_iv_length(cipher_);
|
|
}
|
|
|
|
int Cipher::getKeyLength() const {
|
|
if (!cipher_) return 0;
|
|
return EVP_CIPHER_key_length(cipher_);
|
|
}
|
|
|
|
int Cipher::getBlockSize() const {
|
|
if (!cipher_) return 0;
|
|
return EVP_CIPHER_block_size(cipher_);
|
|
}
|
|
|
|
int Cipher::getNid() const {
|
|
if (!cipher_) return 0;
|
|
return EVP_CIPHER_nid(cipher_);
|
|
}
|
|
|
|
std::string_view Cipher::getModeLabel() const {
|
|
if (!cipher_) return {};
|
|
switch (getMode()) {
|
|
case EVP_CIPH_CCM_MODE:
|
|
return "ccm";
|
|
case EVP_CIPH_CFB_MODE:
|
|
return "cfb";
|
|
case EVP_CIPH_CBC_MODE:
|
|
return "cbc";
|
|
case EVP_CIPH_CTR_MODE:
|
|
return "ctr";
|
|
case EVP_CIPH_ECB_MODE:
|
|
return "ecb";
|
|
case EVP_CIPH_GCM_MODE:
|
|
return "gcm";
|
|
case EVP_CIPH_OCB_MODE:
|
|
return "ocb";
|
|
case EVP_CIPH_OFB_MODE:
|
|
return "ofb";
|
|
case EVP_CIPH_WRAP_MODE:
|
|
return "wrap";
|
|
case EVP_CIPH_XTS_MODE:
|
|
return "xts";
|
|
case EVP_CIPH_STREAM_CIPHER:
|
|
return "stream";
|
|
}
|
|
return "{unknown}";
|
|
}
|
|
|
|
std::string_view Cipher::getName() const {
|
|
if (!cipher_) return {};
|
|
// OBJ_nid2sn(EVP_CIPHER_nid(cipher)) is used here instead of
|
|
// EVP_CIPHER_name(cipher) for compatibility with BoringSSL.
|
|
return OBJ_nid2sn(getNid());
|
|
}
|
|
|
|
bool Cipher::isSupportedAuthenticatedMode() const {
|
|
switch (getMode()) {
|
|
case EVP_CIPH_CCM_MODE:
|
|
case EVP_CIPH_GCM_MODE:
|
|
#ifndef OPENSSL_NO_OCB
|
|
case EVP_CIPH_OCB_MODE:
|
|
#endif
|
|
return true;
|
|
case EVP_CIPH_STREAM_CIPHER:
|
|
return getNid() == NID_chacha20_poly1305;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
CipherCtxPointer CipherCtxPointer::New() {
|
|
auto ret = CipherCtxPointer(EVP_CIPHER_CTX_new());
|
|
if (!ret) return {};
|
|
EVP_CIPHER_CTX_init(ret.get());
|
|
return ret;
|
|
}
|
|
|
|
CipherCtxPointer::CipherCtxPointer(EVP_CIPHER_CTX* ctx) : ctx_(ctx) {}
|
|
|
|
CipherCtxPointer::CipherCtxPointer(CipherCtxPointer&& other) noexcept
|
|
: ctx_(other.release()) {}
|
|
|
|
CipherCtxPointer& CipherCtxPointer::operator=(
|
|
CipherCtxPointer&& other) noexcept {
|
|
if (this == &other) return *this;
|
|
this->~CipherCtxPointer();
|
|
return *new (this) CipherCtxPointer(std::move(other));
|
|
}
|
|
|
|
CipherCtxPointer::~CipherCtxPointer() {
|
|
reset();
|
|
}
|
|
|
|
void CipherCtxPointer::reset(EVP_CIPHER_CTX* ctx) {
|
|
ctx_.reset(ctx);
|
|
}
|
|
|
|
EVP_CIPHER_CTX* CipherCtxPointer::release() {
|
|
return ctx_.release();
|
|
}
|
|
|
|
void CipherCtxPointer::setFlags(int flags) {
|
|
if (!ctx_) return;
|
|
EVP_CIPHER_CTX_set_flags(ctx_.get(), flags);
|
|
}
|
|
|
|
bool CipherCtxPointer::setKeyLength(size_t length) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_set_key_length(ctx_.get(), length);
|
|
}
|
|
|
|
bool CipherCtxPointer::setIvLength(size_t length) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_ctrl(
|
|
ctx_.get(), EVP_CTRL_AEAD_SET_IVLEN, length, nullptr);
|
|
}
|
|
|
|
bool CipherCtxPointer::setAeadTag(const Buffer<const char>& tag) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_ctrl(
|
|
ctx_.get(), EVP_CTRL_AEAD_SET_TAG, tag.len, const_cast<char*>(tag.data));
|
|
}
|
|
|
|
bool CipherCtxPointer::setAeadTagLength(size_t length) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_ctrl(
|
|
ctx_.get(), EVP_CTRL_AEAD_SET_TAG, length, nullptr);
|
|
}
|
|
|
|
bool CipherCtxPointer::setPadding(bool padding) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_set_padding(ctx_.get(), padding);
|
|
}
|
|
|
|
int CipherCtxPointer::getBlockSize() const {
|
|
if (!ctx_) return 0;
|
|
return EVP_CIPHER_CTX_block_size(ctx_.get());
|
|
}
|
|
|
|
int CipherCtxPointer::getMode() const {
|
|
if (!ctx_) return 0;
|
|
return EVP_CIPHER_CTX_mode(ctx_.get());
|
|
}
|
|
|
|
int CipherCtxPointer::getNid() const {
|
|
if (!ctx_) return 0;
|
|
return EVP_CIPHER_CTX_nid(ctx_.get());
|
|
}
|
|
|
|
bool CipherCtxPointer::init(const Cipher& cipher,
|
|
bool encrypt,
|
|
const unsigned char* key,
|
|
const unsigned char* iv) {
|
|
if (!ctx_) return false;
|
|
return EVP_CipherInit_ex(
|
|
ctx_.get(), cipher, nullptr, key, iv, encrypt ? 1 : 0) == 1;
|
|
}
|
|
|
|
bool CipherCtxPointer::update(const Buffer<const unsigned char>& in,
|
|
unsigned char* out,
|
|
int* out_len,
|
|
bool finalize) {
|
|
if (!ctx_) return false;
|
|
if (!finalize) {
|
|
return EVP_CipherUpdate(ctx_.get(), out, out_len, in.data, in.len) == 1;
|
|
}
|
|
return EVP_CipherFinal_ex(ctx_.get(), out, out_len) == 1;
|
|
}
|
|
|
|
bool CipherCtxPointer::getAeadTag(size_t len, unsigned char* out) {
|
|
if (!ctx_) return false;
|
|
return EVP_CIPHER_CTX_ctrl(ctx_.get(), EVP_CTRL_AEAD_GET_TAG, len, out);
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
ECDSASigPointer::ECDSASigPointer() : sig_(nullptr) {}
|
|
ECDSASigPointer::ECDSASigPointer(ECDSA_SIG* sig) : sig_(sig) {
|
|
if (sig_) {
|
|
ECDSA_SIG_get0(sig_.get(), &pr_, &ps_);
|
|
}
|
|
}
|
|
ECDSASigPointer::ECDSASigPointer(ECDSASigPointer&& other) noexcept
|
|
: sig_(other.release()) {
|
|
if (sig_) {
|
|
ECDSA_SIG_get0(sig_.get(), &pr_, &ps_);
|
|
}
|
|
}
|
|
|
|
ECDSASigPointer& ECDSASigPointer::operator=(ECDSASigPointer&& other) noexcept {
|
|
sig_.reset(other.release());
|
|
if (sig_) {
|
|
ECDSA_SIG_get0(sig_.get(), &pr_, &ps_);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
ECDSASigPointer::~ECDSASigPointer() {
|
|
reset();
|
|
}
|
|
|
|
void ECDSASigPointer::reset(ECDSA_SIG* sig) {
|
|
sig_.reset();
|
|
pr_ = nullptr;
|
|
ps_ = nullptr;
|
|
}
|
|
|
|
ECDSA_SIG* ECDSASigPointer::release() {
|
|
pr_ = nullptr;
|
|
ps_ = nullptr;
|
|
return sig_.release();
|
|
}
|
|
|
|
ECDSASigPointer ECDSASigPointer::New() {
|
|
return ECDSASigPointer(ECDSA_SIG_new());
|
|
}
|
|
|
|
ECDSASigPointer ECDSASigPointer::Parse(const Buffer<const unsigned char>& sig) {
|
|
const unsigned char* ptr = sig.data;
|
|
return ECDSASigPointer(d2i_ECDSA_SIG(nullptr, &ptr, sig.len));
|
|
}
|
|
|
|
bool ECDSASigPointer::setParams(BignumPointer&& r, BignumPointer&& s) {
|
|
if (!sig_) return false;
|
|
return ECDSA_SIG_set0(sig_.get(), r.release(), s.release());
|
|
}
|
|
|
|
Buffer<unsigned char> ECDSASigPointer::encode() const {
|
|
if (!sig_)
|
|
return {
|
|
.data = nullptr,
|
|
.len = 0,
|
|
};
|
|
Buffer<unsigned char> buf;
|
|
buf.len = i2d_ECDSA_SIG(sig_.get(), &buf.data);
|
|
return buf;
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
ECGroupPointer::ECGroupPointer() : group_(nullptr) {}
|
|
|
|
ECGroupPointer::ECGroupPointer(EC_GROUP* group) : group_(group) {}
|
|
|
|
ECGroupPointer::ECGroupPointer(ECGroupPointer&& other) noexcept
|
|
: group_(other.release()) {}
|
|
|
|
ECGroupPointer& ECGroupPointer::operator=(ECGroupPointer&& other) noexcept {
|
|
group_.reset(other.release());
|
|
return *this;
|
|
}
|
|
|
|
ECGroupPointer::~ECGroupPointer() {
|
|
reset();
|
|
}
|
|
|
|
void ECGroupPointer::reset(EC_GROUP* group) {
|
|
group_.reset();
|
|
}
|
|
|
|
EC_GROUP* ECGroupPointer::release() {
|
|
return group_.release();
|
|
}
|
|
|
|
ECGroupPointer ECGroupPointer::NewByCurveName(int nid) {
|
|
return ECGroupPointer(EC_GROUP_new_by_curve_name(nid));
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
ECPointPointer::ECPointPointer() : point_(nullptr) {}
|
|
|
|
ECPointPointer::ECPointPointer(EC_POINT* point) : point_(point) {}
|
|
|
|
ECPointPointer::ECPointPointer(ECPointPointer&& other) noexcept
|
|
: point_(other.release()) {}
|
|
|
|
ECPointPointer& ECPointPointer::operator=(ECPointPointer&& other) noexcept {
|
|
point_.reset(other.release());
|
|
return *this;
|
|
}
|
|
|
|
ECPointPointer::~ECPointPointer() {
|
|
reset();
|
|
}
|
|
|
|
void ECPointPointer::reset(EC_POINT* point) {
|
|
point_.reset(point);
|
|
}
|
|
|
|
EC_POINT* ECPointPointer::release() {
|
|
return point_.release();
|
|
}
|
|
|
|
ECPointPointer ECPointPointer::New(const EC_GROUP* group) {
|
|
return ECPointPointer(EC_POINT_new(group));
|
|
}
|
|
|
|
bool ECPointPointer::setFromBuffer(const Buffer<const unsigned char>& buffer,
|
|
const EC_GROUP* group) {
|
|
if (!point_) return false;
|
|
return EC_POINT_oct2point(
|
|
group, point_.get(), buffer.data, buffer.len, nullptr);
|
|
}
|
|
|
|
bool ECPointPointer::mul(const EC_GROUP* group, const BIGNUM* priv_key) {
|
|
if (!point_) return false;
|
|
return EC_POINT_mul(group, point_.get(), priv_key, nullptr, nullptr, nullptr);
|
|
}
|
|
|
|
// ============================================================================
|
|
|
|
ECKeyPointer::ECKeyPointer() : key_(nullptr) {}
|
|
|
|
ECKeyPointer::ECKeyPointer(EC_KEY* key) : key_(key) {}
|
|
|
|
ECKeyPointer::ECKeyPointer(ECKeyPointer&& other) noexcept
|
|
: key_(other.release()) {}
|
|
|
|
ECKeyPointer& ECKeyPointer::operator=(ECKeyPointer&& other) noexcept {
|
|
key_.reset(other.release());
|
|
return *this;
|
|
}
|
|
|
|
ECKeyPointer::~ECKeyPointer() {
|
|
reset();
|
|
}
|
|
|
|
void ECKeyPointer::reset(EC_KEY* key) {
|
|
key_.reset(key);
|
|
}
|
|
|
|
EC_KEY* ECKeyPointer::release() {
|
|
return key_.release();
|
|
}
|
|
|
|
ECKeyPointer ECKeyPointer::clone() const {
|
|
if (!key_) return {};
|
|
return ECKeyPointer(EC_KEY_dup(key_.get()));
|
|
}
|
|
|
|
bool ECKeyPointer::generate() {
|
|
if (!key_) return false;
|
|
return EC_KEY_generate_key(key_.get());
|
|
}
|
|
|
|
bool ECKeyPointer::setPublicKey(const ECPointPointer& pub) {
|
|
if (!key_) return false;
|
|
return EC_KEY_set_public_key(key_.get(), pub.get()) == 1;
|
|
}
|
|
|
|
bool ECKeyPointer::setPublicKeyRaw(const BignumPointer& x,
|
|
const BignumPointer& y) {
|
|
if (!key_) return false;
|
|
return EC_KEY_set_public_key_affine_coordinates(
|
|
key_.get(), x.get(), y.get()) == 1;
|
|
}
|
|
|
|
bool ECKeyPointer::setPrivateKey(const BignumPointer& priv) {
|
|
if (!key_) return false;
|
|
return EC_KEY_set_private_key(key_.get(), priv.get()) == 1;
|
|
}
|
|
|
|
const BIGNUM* ECKeyPointer::getPrivateKey() const {
|
|
if (!key_) return nullptr;
|
|
return GetPrivateKey(key_.get());
|
|
}
|
|
|
|
const BIGNUM* ECKeyPointer::GetPrivateKey(const EC_KEY* key) {
|
|
return EC_KEY_get0_private_key(key);
|
|
}
|
|
|
|
const EC_POINT* ECKeyPointer::getPublicKey() const {
|
|
if (!key_) return nullptr;
|
|
return GetPublicKey(key_.get());
|
|
}
|
|
|
|
const EC_POINT* ECKeyPointer::GetPublicKey(const EC_KEY* key) {
|
|
return EC_KEY_get0_public_key(key);
|
|
}
|
|
|
|
const EC_GROUP* ECKeyPointer::getGroup() const {
|
|
if (!key_) return nullptr;
|
|
return GetGroup(key_.get());
|
|
}
|
|
|
|
const EC_GROUP* ECKeyPointer::GetGroup(const EC_KEY* key) {
|
|
return EC_KEY_get0_group(key);
|
|
}
|
|
|
|
int ECKeyPointer::GetGroupName(const EC_KEY* key) {
|
|
const EC_GROUP* group = GetGroup(key);
|
|
return group ? EC_GROUP_get_curve_name(group) : 0;
|
|
}
|
|
|
|
bool ECKeyPointer::Check(const EC_KEY* key) {
|
|
return EC_KEY_check_key(key) == 1;
|
|
}
|
|
|
|
bool ECKeyPointer::checkKey() const {
|
|
if (!key_) return false;
|
|
return Check(key_.get());
|
|
}
|
|
|
|
ECKeyPointer ECKeyPointer::NewByCurveName(int nid) {
|
|
return ECKeyPointer(EC_KEY_new_by_curve_name(nid));
|
|
}
|
|
|
|
ECKeyPointer ECKeyPointer::New(const EC_GROUP* group) {
|
|
auto ptr = ECKeyPointer(EC_KEY_new());
|
|
if (!ptr) return {};
|
|
if (!EC_KEY_set_group(ptr.get(), group)) return {};
|
|
return ptr;
|
|
}
|
|
|
|
} // namespace ncrypto
|