3e1b1dd4a9
The copyright and license notice is already in the LICENSE file. There is no justifiable reason to also require that it be included in every file, since the individual files are not individually distributed except as part of the entire package.
680 lines
18 KiB
JavaScript
680 lines
18 KiB
JavaScript
// Note: In 0.8 and before, crypto functions all defaulted to using
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// binary-encoded strings rather than buffers.
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'use strict';
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exports.DEFAULT_ENCODING = 'buffer';
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try {
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var binding = process.binding('crypto');
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var randomBytes = binding.randomBytes;
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var pseudoRandomBytes = binding.pseudoRandomBytes;
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var getCiphers = binding.getCiphers;
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var getHashes = binding.getHashes;
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} catch (e) {
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throw new Error('node.js not compiled with openssl crypto support.');
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}
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var constants = require('constants');
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var stream = require('stream');
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var util = require('util');
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var DH_GENERATOR = 2;
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// This is here because many functions accepted binary strings without
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// any explicit encoding in older versions of node, and we don't want
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// to break them unnecessarily.
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function toBuf(str, encoding) {
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encoding = encoding || 'binary';
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if (util.isString(str)) {
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if (encoding === 'buffer')
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encoding = 'binary';
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str = new Buffer(str, encoding);
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}
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return str;
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}
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exports._toBuf = toBuf;
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var assert = require('assert');
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var StringDecoder = require('string_decoder').StringDecoder;
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function LazyTransform(options) {
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this._options = options;
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}
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util.inherits(LazyTransform, stream.Transform);
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[
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'_readableState',
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'_writableState',
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'_transformState'
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].forEach(function(prop, i, props) {
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Object.defineProperty(LazyTransform.prototype, prop, {
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get: function() {
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stream.Transform.call(this, this._options);
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this._writableState.decodeStrings = false;
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this._writableState.defaultEncoding = 'binary';
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return this[prop];
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},
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set: function(val) {
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Object.defineProperty(this, prop, {
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value: val,
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enumerable: true,
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configurable: true,
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writable: true
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});
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},
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configurable: true,
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enumerable: true
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});
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});
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exports.createHash = exports.Hash = Hash;
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function Hash(algorithm, options) {
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if (!(this instanceof Hash))
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return new Hash(algorithm, options);
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this._handle = new binding.Hash(algorithm);
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LazyTransform.call(this, options);
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}
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util.inherits(Hash, LazyTransform);
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Hash.prototype._transform = function(chunk, encoding, callback) {
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this._handle.update(chunk, encoding);
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callback();
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};
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Hash.prototype._flush = function(callback) {
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var encoding = this._readableState.encoding || 'buffer';
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this.push(this._handle.digest(encoding), encoding);
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callback();
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};
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Hash.prototype.update = function(data, encoding) {
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding === 'buffer' && util.isString(data))
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encoding = 'binary';
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this._handle.update(data, encoding);
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return this;
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};
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Hash.prototype.digest = function(outputEncoding) {
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outputEncoding = outputEncoding || exports.DEFAULT_ENCODING;
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return this._handle.digest(outputEncoding);
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};
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exports.createHmac = exports.Hmac = Hmac;
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function Hmac(hmac, key, options) {
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if (!(this instanceof Hmac))
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return new Hmac(hmac, key, options);
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this._handle = new binding.Hmac();
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this._handle.init(hmac, toBuf(key));
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LazyTransform.call(this, options);
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}
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util.inherits(Hmac, LazyTransform);
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Hmac.prototype.update = Hash.prototype.update;
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Hmac.prototype.digest = Hash.prototype.digest;
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Hmac.prototype._flush = Hash.prototype._flush;
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Hmac.prototype._transform = Hash.prototype._transform;
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function getDecoder(decoder, encoding) {
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if (encoding === 'utf-8') encoding = 'utf8'; // Normalize encoding.
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decoder = decoder || new StringDecoder(encoding);
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assert(decoder.encoding === encoding, 'Cannot change encoding');
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return decoder;
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}
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exports.createCipher = exports.Cipher = Cipher;
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function Cipher(cipher, password, options) {
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if (!(this instanceof Cipher))
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return new Cipher(cipher, password, options);
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this._handle = new binding.CipherBase(true);
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this._handle.init(cipher, toBuf(password));
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this._decoder = null;
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LazyTransform.call(this, options);
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}
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util.inherits(Cipher, LazyTransform);
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Cipher.prototype._transform = function(chunk, encoding, callback) {
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this.push(this._handle.update(chunk, encoding));
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callback();
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};
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Cipher.prototype._flush = function(callback) {
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try {
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this.push(this._handle.final());
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} catch (e) {
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callback(e);
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return;
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}
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callback();
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};
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Cipher.prototype.update = function(data, inputEncoding, outputEncoding) {
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inputEncoding = inputEncoding || exports.DEFAULT_ENCODING;
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outputEncoding = outputEncoding || exports.DEFAULT_ENCODING;
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var ret = this._handle.update(data, inputEncoding);
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if (outputEncoding && outputEncoding !== 'buffer') {
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this._decoder = getDecoder(this._decoder, outputEncoding);
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ret = this._decoder.write(ret);
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}
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return ret;
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};
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Cipher.prototype.final = function(outputEncoding) {
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outputEncoding = outputEncoding || exports.DEFAULT_ENCODING;
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var ret = this._handle.final();
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if (outputEncoding && outputEncoding !== 'buffer') {
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this._decoder = getDecoder(this._decoder, outputEncoding);
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ret = this._decoder.end(ret);
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}
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return ret;
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};
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Cipher.prototype.setAutoPadding = function(ap) {
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this._handle.setAutoPadding(ap);
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return this;
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};
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Cipher.prototype.getAuthTag = function() {
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return this._handle.getAuthTag();
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};
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Cipher.prototype.setAuthTag = function(tagbuf) {
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this._handle.setAuthTag(tagbuf);
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};
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Cipher.prototype.setAAD = function(aadbuf) {
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this._handle.setAAD(aadbuf);
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};
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exports.createCipheriv = exports.Cipheriv = Cipheriv;
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function Cipheriv(cipher, key, iv, options) {
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if (!(this instanceof Cipheriv))
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return new Cipheriv(cipher, key, iv, options);
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this._handle = new binding.CipherBase(true);
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this._handle.initiv(cipher, toBuf(key), toBuf(iv));
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this._decoder = null;
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LazyTransform.call(this, options);
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}
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util.inherits(Cipheriv, LazyTransform);
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Cipheriv.prototype._transform = Cipher.prototype._transform;
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Cipheriv.prototype._flush = Cipher.prototype._flush;
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Cipheriv.prototype.update = Cipher.prototype.update;
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Cipheriv.prototype.final = Cipher.prototype.final;
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Cipheriv.prototype.setAutoPadding = Cipher.prototype.setAutoPadding;
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Cipheriv.prototype.getAuthTag = Cipher.prototype.getAuthTag;
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Cipheriv.prototype.setAuthTag = Cipher.prototype.setAuthTag;
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Cipheriv.prototype.setAAD = Cipher.prototype.setAAD;
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exports.createDecipher = exports.Decipher = Decipher;
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function Decipher(cipher, password, options) {
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if (!(this instanceof Decipher))
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return new Decipher(cipher, password, options);
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this._handle = new binding.CipherBase(false);
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this._handle.init(cipher, toBuf(password));
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this._decoder = null;
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LazyTransform.call(this, options);
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}
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util.inherits(Decipher, LazyTransform);
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Decipher.prototype._transform = Cipher.prototype._transform;
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Decipher.prototype._flush = Cipher.prototype._flush;
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Decipher.prototype.update = Cipher.prototype.update;
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Decipher.prototype.final = Cipher.prototype.final;
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Decipher.prototype.finaltol = Cipher.prototype.final;
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Decipher.prototype.setAutoPadding = Cipher.prototype.setAutoPadding;
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Decipher.prototype.getAuthTag = Cipher.prototype.getAuthTag;
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Decipher.prototype.setAuthTag = Cipher.prototype.setAuthTag;
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Decipher.prototype.setAAD = Cipher.prototype.setAAD;
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exports.createDecipheriv = exports.Decipheriv = Decipheriv;
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function Decipheriv(cipher, key, iv, options) {
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if (!(this instanceof Decipheriv))
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return new Decipheriv(cipher, key, iv, options);
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this._handle = new binding.CipherBase(false);
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this._handle.initiv(cipher, toBuf(key), toBuf(iv));
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this._decoder = null;
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LazyTransform.call(this, options);
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}
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util.inherits(Decipheriv, LazyTransform);
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Decipheriv.prototype._transform = Cipher.prototype._transform;
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Decipheriv.prototype._flush = Cipher.prototype._flush;
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Decipheriv.prototype.update = Cipher.prototype.update;
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Decipheriv.prototype.final = Cipher.prototype.final;
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Decipheriv.prototype.finaltol = Cipher.prototype.final;
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Decipheriv.prototype.setAutoPadding = Cipher.prototype.setAutoPadding;
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Decipheriv.prototype.getAuthTag = Cipher.prototype.getAuthTag;
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Decipheriv.prototype.setAuthTag = Cipher.prototype.setAuthTag;
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Decipheriv.prototype.setAAD = Cipher.prototype.setAAD;
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exports.createSign = exports.Sign = Sign;
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function Sign(algorithm, options) {
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if (!(this instanceof Sign))
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return new Sign(algorithm, options);
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this._handle = new binding.Sign();
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this._handle.init(algorithm);
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stream.Writable.call(this, options);
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}
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util.inherits(Sign, stream.Writable);
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Sign.prototype._write = function(chunk, encoding, callback) {
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this._handle.update(chunk, encoding);
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callback();
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};
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Sign.prototype.update = Hash.prototype.update;
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Sign.prototype.sign = function(options, encoding) {
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if (!options)
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throw new Error('No key provided to sign');
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var key = options.key || options;
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var passphrase = options.passphrase || null;
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var ret = this._handle.sign(toBuf(key), null, passphrase);
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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ret = ret.toString(encoding);
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return ret;
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};
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exports.createVerify = exports.Verify = Verify;
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function Verify(algorithm, options) {
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if (!(this instanceof Verify))
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return new Verify(algorithm, options);
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this._handle = new binding.Verify;
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this._handle.init(algorithm);
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stream.Writable.call(this, options);
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}
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util.inherits(Verify, stream.Writable);
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Verify.prototype._write = Sign.prototype._write;
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Verify.prototype.update = Sign.prototype.update;
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Verify.prototype.verify = function(object, signature, sigEncoding) {
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sigEncoding = sigEncoding || exports.DEFAULT_ENCODING;
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return this._handle.verify(toBuf(object), toBuf(signature, sigEncoding));
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};
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exports.publicEncrypt = function(options, buffer) {
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var key = options.key || options;
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var padding = options.padding || constants.RSA_PKCS1_OAEP_PADDING;
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return binding.publicEncrypt(toBuf(key), buffer, padding);
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};
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exports.privateDecrypt = function(options, buffer) {
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var key = options.key || options;
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var passphrase = options.passphrase || null;
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var padding = options.padding || constants.RSA_PKCS1_OAEP_PADDING;
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return binding.privateDecrypt(toBuf(key), buffer, padding, passphrase);
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};
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exports.createDiffieHellman = exports.DiffieHellman = DiffieHellman;
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function DiffieHellman(sizeOrKey, keyEncoding, generator, genEncoding) {
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if (!(this instanceof DiffieHellman))
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return new DiffieHellman(sizeOrKey, keyEncoding, generator, genEncoding);
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if (!util.isBuffer(sizeOrKey) &&
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typeof sizeOrKey !== 'number' &&
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typeof sizeOrKey !== 'string')
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throw new TypeError('First argument should be number, string or Buffer');
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if (keyEncoding) {
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if (typeof keyEncoding !== 'string' ||
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(!Buffer.isEncoding(keyEncoding) && keyEncoding !== 'buffer')) {
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genEncoding = generator;
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generator = keyEncoding;
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keyEncoding = false;
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}
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}
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keyEncoding = keyEncoding || exports.DEFAULT_ENCODING;
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genEncoding = genEncoding || exports.DEFAULT_ENCODING;
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if (typeof sizeOrKey !== 'number')
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sizeOrKey = toBuf(sizeOrKey, keyEncoding);
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if (!generator)
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generator = DH_GENERATOR;
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else if (typeof generator !== 'number')
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generator = toBuf(generator, genEncoding);
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this._handle = new binding.DiffieHellman(sizeOrKey, generator);
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Object.defineProperty(this, 'verifyError', {
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enumerable: true,
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value: this._handle.verifyError,
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writable: false
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});
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}
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exports.DiffieHellmanGroup =
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exports.createDiffieHellmanGroup =
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exports.getDiffieHellman = DiffieHellmanGroup;
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function DiffieHellmanGroup(name) {
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if (!(this instanceof DiffieHellmanGroup))
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return new DiffieHellmanGroup(name);
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this._handle = new binding.DiffieHellmanGroup(name);
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Object.defineProperty(this, 'verifyError', {
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enumerable: true,
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value: this._handle.verifyError,
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writable: false
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});
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}
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DiffieHellmanGroup.prototype.generateKeys =
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DiffieHellman.prototype.generateKeys =
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dhGenerateKeys;
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function dhGenerateKeys(encoding) {
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var keys = this._handle.generateKeys();
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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keys = keys.toString(encoding);
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return keys;
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}
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DiffieHellmanGroup.prototype.computeSecret =
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DiffieHellman.prototype.computeSecret =
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dhComputeSecret;
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function dhComputeSecret(key, inEnc, outEnc) {
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inEnc = inEnc || exports.DEFAULT_ENCODING;
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outEnc = outEnc || exports.DEFAULT_ENCODING;
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var ret = this._handle.computeSecret(toBuf(key, inEnc));
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if (outEnc && outEnc !== 'buffer')
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ret = ret.toString(outEnc);
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return ret;
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}
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DiffieHellmanGroup.prototype.getPrime =
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DiffieHellman.prototype.getPrime =
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dhGetPrime;
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function dhGetPrime(encoding) {
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var prime = this._handle.getPrime();
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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prime = prime.toString(encoding);
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return prime;
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}
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DiffieHellmanGroup.prototype.getGenerator =
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DiffieHellman.prototype.getGenerator =
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dhGetGenerator;
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function dhGetGenerator(encoding) {
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var generator = this._handle.getGenerator();
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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generator = generator.toString(encoding);
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return generator;
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}
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DiffieHellmanGroup.prototype.getPublicKey =
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DiffieHellman.prototype.getPublicKey =
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dhGetPublicKey;
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function dhGetPublicKey(encoding) {
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var key = this._handle.getPublicKey();
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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key = key.toString(encoding);
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return key;
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}
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DiffieHellmanGroup.prototype.getPrivateKey =
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DiffieHellman.prototype.getPrivateKey =
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dhGetPrivateKey;
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function dhGetPrivateKey(encoding) {
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var key = this._handle.getPrivateKey();
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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key = key.toString(encoding);
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return key;
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}
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DiffieHellman.prototype.setPublicKey = function(key, encoding) {
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encoding = encoding || exports.DEFAULT_ENCODING;
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this._handle.setPublicKey(toBuf(key, encoding));
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return this;
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};
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DiffieHellman.prototype.setPrivateKey = function(key, encoding) {
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encoding = encoding || exports.DEFAULT_ENCODING;
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this._handle.setPrivateKey(toBuf(key, encoding));
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return this;
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};
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function ECDH(curve) {
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if (!util.isString(curve))
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throw new TypeError('curve should be a string');
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this._handle = new binding.ECDH(curve);
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}
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exports.createECDH = function createECDH(curve) {
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return new ECDH(curve);
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};
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ECDH.prototype.computeSecret = DiffieHellman.prototype.computeSecret;
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ECDH.prototype.setPrivateKey = DiffieHellman.prototype.setPrivateKey;
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ECDH.prototype.setPublicKey = DiffieHellman.prototype.setPublicKey;
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ECDH.prototype.getPrivateKey = DiffieHellman.prototype.getPrivateKey;
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ECDH.prototype.generateKeys = function generateKeys(encoding, format) {
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this._handle.generateKeys();
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return this.getPublicKey(encoding, format);
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};
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ECDH.prototype.getPublicKey = function getPublicKey(encoding, format) {
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var f;
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if (format) {
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if (typeof format === 'number')
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f = format;
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if (format === 'compressed')
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f = constants.POINT_CONVERSION_COMPRESSED;
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else if (format === 'hybrid')
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f = constants.POINT_CONVERSION_HYBRID;
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// Default
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else if (format === 'uncompressed')
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f = constants.POINT_CONVERSION_UNCOMPRESSED;
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else
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throw TypeError('Bad format: ' + format);
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} else {
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f = constants.POINT_CONVERSION_UNCOMPRESSED;
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}
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var key = this._handle.getPublicKey(f);
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encoding = encoding || exports.DEFAULT_ENCODING;
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if (encoding && encoding !== 'buffer')
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key = key.toString(encoding);
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return key;
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};
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|
exports.pbkdf2 = function(password,
|
|
salt,
|
|
iterations,
|
|
keylen,
|
|
digest,
|
|
callback) {
|
|
if (util.isFunction(digest)) {
|
|
callback = digest;
|
|
digest = undefined;
|
|
}
|
|
|
|
if (!util.isFunction(callback))
|
|
throw new Error('No callback provided to pbkdf2');
|
|
|
|
return pbkdf2(password, salt, iterations, keylen, digest, callback);
|
|
};
|
|
|
|
|
|
exports.pbkdf2Sync = function(password, salt, iterations, keylen, digest) {
|
|
return pbkdf2(password, salt, iterations, keylen, digest);
|
|
};
|
|
|
|
|
|
function pbkdf2(password, salt, iterations, keylen, digest, callback) {
|
|
password = toBuf(password);
|
|
salt = toBuf(salt);
|
|
|
|
if (exports.DEFAULT_ENCODING === 'buffer')
|
|
return binding.PBKDF2(password, salt, iterations, keylen, digest, callback);
|
|
|
|
// at this point, we need to handle encodings.
|
|
var encoding = exports.DEFAULT_ENCODING;
|
|
if (callback) {
|
|
var next = function(er, ret) {
|
|
if (ret)
|
|
ret = ret.toString(encoding);
|
|
callback(er, ret);
|
|
};
|
|
binding.PBKDF2(password, salt, iterations, keylen, digest, next);
|
|
} else {
|
|
var ret = binding.PBKDF2(password, salt, iterations, keylen, digest);
|
|
return ret.toString(encoding);
|
|
}
|
|
}
|
|
|
|
|
|
exports.Certificate = Certificate;
|
|
|
|
function Certificate() {
|
|
if (!(this instanceof Certificate))
|
|
return new Certificate();
|
|
|
|
this._handle = new binding.Certificate();
|
|
}
|
|
|
|
|
|
Certificate.prototype.verifySpkac = function(object) {
|
|
return this._handle.verifySpkac(object);
|
|
};
|
|
|
|
|
|
Certificate.prototype.exportPublicKey = function(object, encoding) {
|
|
return this._handle.exportPublicKey(toBuf(object, encoding));
|
|
};
|
|
|
|
|
|
Certificate.prototype.exportChallenge = function(object, encoding) {
|
|
return this._handle.exportChallenge(toBuf(object, encoding));
|
|
};
|
|
|
|
|
|
exports.setEngine = function setEngine(id, flags) {
|
|
if (!util.isString(id))
|
|
throw new TypeError('id should be a string');
|
|
|
|
if (flags && !util.isNumber(flags))
|
|
throw new TypeError('flags should be a number, if present');
|
|
flags = flags >>> 0;
|
|
|
|
// Use provided engine for everything by default
|
|
if (flags === 0)
|
|
flags = constants.ENGINE_METHOD_ALL;
|
|
|
|
return binding.setEngine(id, flags);
|
|
};
|
|
|
|
exports.randomBytes = randomBytes;
|
|
exports.pseudoRandomBytes = pseudoRandomBytes;
|
|
|
|
exports.rng = randomBytes;
|
|
exports.prng = pseudoRandomBytes;
|
|
|
|
|
|
exports.getCiphers = function() {
|
|
return filterDuplicates(getCiphers.call(null, arguments));
|
|
};
|
|
|
|
|
|
exports.getHashes = function() {
|
|
return filterDuplicates(getHashes.call(null, arguments));
|
|
|
|
};
|
|
|
|
|
|
function filterDuplicates(names) {
|
|
// Drop all-caps names in favor of their lowercase aliases,
|
|
// for example, 'sha1' instead of 'SHA1'.
|
|
var ctx = {};
|
|
names.forEach(function(name) {
|
|
var key = name;
|
|
if (/^[0-9A-Z\-]+$/.test(key)) key = key.toLowerCase();
|
|
if (!ctx.hasOwnProperty(key) || ctx[key] < name)
|
|
ctx[key] = name;
|
|
});
|
|
|
|
return Object.getOwnPropertyNames(ctx).map(function(key) {
|
|
return ctx[key];
|
|
}).sort();
|
|
}
|
|
|
|
// Legacy API
|
|
exports.__defineGetter__('createCredentials', util.deprecate(function() {
|
|
return require('tls').createSecureContext;
|
|
}, 'createCredentials() is deprecated, use tls.createSecureContext instead'));
|
|
|
|
exports.__defineGetter__('Credentials', util.deprecate(function() {
|
|
return require('tls').SecureContext;
|
|
}, 'Credentials is deprecated, use tls.createSecureContext instead'));
|