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authorMinteck <contact@minteck.org>2022-10-18 08:59:09 +0200
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+# Forge
+
+[![Build Status][travis-ci-png]][travis-ci-site]
+[travis-ci-png]: https://travis-ci.org/digitalbazaar/forge.png?branch=master
+[travis-ci-site]: https://travis-ci.org/digitalbazaar/forge
+
+A native implementation of [TLS][] (and various other cryptographic tools) in
+[JavaScript][].
+
+## Introduction
+
+The Forge software is a fully native implementation of the [TLS][] protocol in
+JavaScript as well as a set of tools for developing Web Apps that utilize many
+network resources.
+
+## Performance
+
+Forge is fast. Benchmarks against other popular JavaScript cryptography
+libraries can be found here:
+
+http://dominictarr.github.io/crypto-bench/
+
+http://cryptojs.altervista.org/test/simulate-threading-speed_test.html
+
+## Getting Started
+------------------
+
+### Node.js ###
+
+If you want to use forge with [node.js][], it is available through `npm`:
+
+https://npmjs.org/package/node-forge
+
+Installation:
+
+ npm install node-forge
+
+You can then use forge as a regular module:
+
+ var forge = require('node-forge');
+
+### Requirements ###
+
+* General
+ * Optional: GNU autotools for the build infrastructure if using Flash.
+* Building a Browser Bundle:
+ * nodejs
+ * npm
+* Testing
+ * nodejs
+ * Optional: Python and OpenSSL development environment to build
+ * a special SSL module with session cache support for testing with flash.
+ * http://www.python.org/dev/
+ * http://www.openssl.org/
+ * Debian users should install python-dev and libssl-dev.
+* Optional: Flash
+ * A pre-built SocketPool.swf is included.
+ * Adobe Flex 3 SDK to build the Flash socket code.
+ * http://opensource.adobe.com/wiki/display/flexsdk/
+
+### Building a browser bundle ###
+
+To create a minimized JavaScript bundle, run the following:
+
+```
+npm install
+npm run minify
+```
+
+This will create a single minimized file that can be included in
+the browser:
+
+```
+js/forge.min.js
+```
+
+Include the file via:
+
+```html
+<script src="js/forge.min.js"></script>
+```
+
+Note that the minify script depends on the requirejs package,
+and that the requirejs binary 'r.js' assumes that the name of
+the node binary is 'node' not 'nodejs', as it is on some
+systems. You may need to change the hashbang line to use
+'nodejs' or run the command manually.
+
+To create a single non-minimized file that can be included in
+the browser:
+
+```
+npm install
+npm run bundle
+```
+
+This will create:
+
+```
+js/forge.bundle.js
+```
+
+Include the file via:
+
+```html
+<script src="js/forge.bundle.js"></script>
+```
+
+The above bundles will synchronously create a global 'forge' object.
+
+Keep in mind that these bundles will not include any WebWorker
+scripts (eg: prime.worker.js) or their dependencies, so these will
+need to be accessible from the browser if any WebWorkers are used.
+
+### Testing with NodeJS & RequireJS ###
+
+A test server for [node.js][] can be found at `./nodejs`. The following are included:
+
+ * Example of how to use `forge` within NodeJS in the form of a [mocha](http://mochajs.org/) test.
+ * Example of how to serve `forge` to the browser using [RequireJS](http://requirejs.org/).
+
+To run:
+
+ cd nodejs
+ npm install
+ npm test
+ npm start
+
+
+### Old build system that includes flash support ###
+
+To build the whole project, including Flash, run the following:
+
+ $ ./build-setup
+ $ make
+
+This will create the SWF, symlink all the JavaScript files, and build a Python
+SSL module for testing. To see configure options, run `./configure --help`.
+
+### Old test system including flash support ###
+
+A test server is provided which can be run in TLS mode and non-TLS mode. Use
+the --help option to get help for configuring ports. The server will print out
+the local URL you can vist to run tests.
+
+Some of the simplier tests should be run with just the non-TLS server::
+
+ $ ./tests/server.py
+
+More advanced tests need TLS enabled::
+
+ $ ./tests/server.py --tls
+
+## Contributing
+---------------
+
+Any contributions (eg: PRs) that are accepted will be brought under the same
+license used by the rest of the Forge project. This license allows Forge to
+be used under the terms of either the BSD License or the GNU General Public
+License (GPL) Version 2.
+
+See: [LICENSE](https://github.com/digitalbazaar/forge/blob/cbebca3780658703d925b61b2caffb1d263a6c1d/LICENSE)
+
+If a contribution contains 3rd party source code with its own license, it
+may retain it, so long as that license is compatible with the Forge license.
+
+## Documentation
+----------------
+
+### Transports
+
+* [TLS](#tls)
+* [HTTP](#http)
+* [SSH](#ssh)
+* [XHR](#xhr)
+* [Sockets](#socket)
+
+### Ciphers
+
+* [CIPHER](#cipher)
+* [AES](#aes)
+* [DES](#des)
+* [RC2](#rc2)
+
+### PKI
+
+* [RSA](#rsa)
+* [RSA-KEM](#rsakem)
+* [X.509](#x509)
+* [PKCS#5](#pkcs5)
+* [PKCS#7](#pkcs7)
+* [PKCS#8](#pkcs8)
+* [PKCS#10](#pkcs10)
+* [PKCS#12](#pkcs12)
+* [ASN.1](#asn)
+
+### Message Digests
+
+* [SHA1](#sha1)
+* [SHA256](#sha256)
+* [SHA384](#sha384)
+* [SHA512](#sha512)
+* [MD5](#md5)
+* [HMAC](#hmac)
+
+### Utilities
+
+* [Prime](#prime)
+* [PRNG](#prng)
+* [Tasks](#task)
+* [Utilities](#util)
+* [Logging](#log)
+* [Debugging](#debug)
+* [Flash Socket Policy Module](#fsp)
+
+---------------------------------------
+
+If at any time you wish to disable the use of native code, where available,
+for particular forge features like its secure random number generator, you
+may set the ```disableNativeCode``` flag on ```forge``` to ```true```. It
+is not recommended that you set this flag as native code is typically more
+performant and may have stronger security properties. It may be useful to
+set this flag to test certain features that you plan to run in environments
+that are different from your testing environment.
+
+To disable native code when including forge in the browser:
+
+```js
+forge = {disableNativeCode: true};
+// now include forge script file(s)
+// Note: with this approach, script files *must*
+// be included after initializing the global forge var
+
+// alternatively, include script files first and then call
+forge = forge({disableNativeCode: true});
+
+// Note: forge will be permanently reconfigured now;
+// to avoid this but use the same "forge" var name,
+// you can wrap your code in a function to shadow the
+// global var, eg:
+(function(forge) {
+ // ...
+})(forge({disableNativeCode: true}));
+```
+
+To disable native code when using node.js:
+
+```js
+var forge = require('node-forge')({disableNativeCode: true});
+```
+
+---------------------------------------
+## Transports
+
+<a name="tls" />
+### TLS
+
+Provides a native javascript client and server-side [TLS][] implementation.
+
+__Examples__
+
+```js
+// create TLS client
+var client = forge.tls.createConnection({
+ server: false,
+ caStore: /* Array of PEM-formatted certs or a CA store object */,
+ sessionCache: {},
+ // supported cipher suites in order of preference
+ cipherSuites: [
+ forge.tls.CipherSuites.TLS_RSA_WITH_AES_128_CBC_SHA,
+ forge.tls.CipherSuites.TLS_RSA_WITH_AES_256_CBC_SHA],
+ virtualHost: 'example.com',
+ verify: function(connection, verified, depth, certs) {
+ if(depth === 0) {
+ var cn = certs[0].subject.getField('CN').value;
+ if(cn !== 'example.com') {
+ verified = {
+ alert: forge.tls.Alert.Description.bad_certificate,
+ message: 'Certificate common name does not match hostname.'
+ };
+ }
+ }
+ return verified;
+ },
+ connected: function(connection) {
+ console.log('connected');
+ // send message to server
+ connection.prepare(forge.util.encodeUtf8('Hi server!'));
+ /* NOTE: experimental, start heartbeat retransmission timer
+ myHeartbeatTimer = setInterval(function() {
+ connection.prepareHeartbeatRequest(forge.util.createBuffer('1234'));
+ }, 5*60*1000);*/
+ },
+ /* provide a client-side cert if you want
+ getCertificate: function(connection, hint) {
+ return myClientCertificate;
+ },
+ /* the private key for the client-side cert if provided */
+ getPrivateKey: function(connection, cert) {
+ return myClientPrivateKey;
+ },
+ tlsDataReady: function(connection) {
+ // TLS data (encrypted) is ready to be sent to the server
+ sendToServerSomehow(connection.tlsData.getBytes());
+ // if you were communicating with the server below, you'd do:
+ // server.process(connection.tlsData.getBytes());
+ },
+ dataReady: function(connection) {
+ // clear data from the server is ready
+ console.log('the server sent: ' +
+ forge.util.decodeUtf8(connection.data.getBytes()));
+ // close connection
+ connection.close();
+ },
+ /* NOTE: experimental
+ heartbeatReceived: function(connection, payload) {
+ // restart retransmission timer, look at payload
+ clearInterval(myHeartbeatTimer);
+ myHeartbeatTimer = setInterval(function() {
+ connection.prepareHeartbeatRequest(forge.util.createBuffer('1234'));
+ }, 5*60*1000);
+ payload.getBytes();
+ },*/
+ closed: function(connection) {
+ console.log('disconnected');
+ },
+ error: function(connection, error) {
+ console.log('uh oh', error);
+ }
+});
+
+// start the handshake process
+client.handshake();
+
+// when encrypted TLS data is received from the server, process it
+client.process(encryptedBytesFromServer);
+
+// create TLS server
+var server = forge.tls.createConnection({
+ server: true,
+ caStore: /* Array of PEM-formatted certs or a CA store object */,
+ sessionCache: {},
+ // supported cipher suites in order of preference
+ cipherSuites: [
+ forge.tls.CipherSuites.TLS_RSA_WITH_AES_128_CBC_SHA,
+ forge.tls.CipherSuites.TLS_RSA_WITH_AES_256_CBC_SHA],
+ // require a client-side certificate if you want
+ verifyClient: true,
+ verify: function(connection, verified, depth, certs) {
+ if(depth === 0) {
+ var cn = certs[0].subject.getField('CN').value;
+ if(cn !== 'the-client') {
+ verified = {
+ alert: forge.tls.Alert.Description.bad_certificate,
+ message: 'Certificate common name does not match expected client.'
+ };
+ }
+ }
+ return verified;
+ },
+ connected: function(connection) {
+ console.log('connected');
+ // send message to client
+ connection.prepare(forge.util.encodeUtf8('Hi client!'));
+ /* NOTE: experimental, start heartbeat retransmission timer
+ myHeartbeatTimer = setInterval(function() {
+ connection.prepareHeartbeatRequest(forge.util.createBuffer('1234'));
+ }, 5*60*1000);*/
+ },
+ getCertificate: function(connection, hint) {
+ return myServerCertificate;
+ },
+ getPrivateKey: function(connection, cert) {
+ return myServerPrivateKey;
+ },
+ tlsDataReady: function(connection) {
+ // TLS data (encrypted) is ready to be sent to the client
+ sendToClientSomehow(connection.tlsData.getBytes());
+ // if you were communicating with the client above you'd do:
+ // client.process(connection.tlsData.getBytes());
+ },
+ dataReady: function(connection) {
+ // clear data from the client is ready
+ console.log('the client sent: ' +
+ forge.util.decodeUtf8(connection.data.getBytes()));
+ // close connection
+ connection.close();
+ },
+ /* NOTE: experimental
+ heartbeatReceived: function(connection, payload) {
+ // restart retransmission timer, look at payload
+ clearInterval(myHeartbeatTimer);
+ myHeartbeatTimer = setInterval(function() {
+ connection.prepareHeartbeatRequest(forge.util.createBuffer('1234'));
+ }, 5*60*1000);
+ payload.getBytes();
+ },*/
+ closed: function(connection) {
+ console.log('disconnected');
+ },
+ error: function(connection, error) {
+ console.log('uh oh', error);
+ }
+});
+
+// when encrypted TLS data is received from the client, process it
+server.process(encryptedBytesFromClient);
+```
+
+Connect to a TLS server using node's net.Socket:
+
+```js
+var socket = new net.Socket();
+
+var client = forge.tls.createConnection({
+ server: false,
+ verify: function(connection, verified, depth, certs) {
+ // skip verification for testing
+ console.log('[tls] server certificate verified');
+ return true;
+ },
+ connected: function(connection) {
+ console.log('[tls] connected');
+ // prepare some data to send (note that the string is interpreted as
+ // 'binary' encoded, which works for HTTP which only uses ASCII, use
+ // forge.util.encodeUtf8(str) otherwise
+ client.prepare('GET / HTTP/1.0\r\n\r\n');
+ },
+ tlsDataReady: function(connection) {
+ // encrypted data is ready to be sent to the server
+ var data = connection.tlsData.getBytes();
+ socket.write(data, 'binary'); // encoding should be 'binary'
+ },
+ dataReady: function(connection) {
+ // clear data from the server is ready
+ var data = connection.data.getBytes();
+ console.log('[tls] data received from the server: ' + data);
+ },
+ closed: function() {
+ console.log('[tls] disconnected');
+ },
+ error: function(connection, error) {
+ console.log('[tls] error', error);
+ }
+});
+
+socket.on('connect', function() {
+ console.log('[socket] connected');
+ client.handshake();
+});
+socket.on('data', function(data) {
+ client.process(data.toString('binary')); // encoding should be 'binary'
+});
+socket.on('end', function() {
+ console.log('[socket] disconnected');
+});
+
+// connect to google.com
+socket.connect(443, 'google.com');
+
+// or connect to gmail's imap server (but don't send the HTTP header above)
+//socket.connect(993, 'imap.gmail.com');
+```
+
+<a name="http" />
+### HTTP
+
+Provides a native [JavaScript][] mini-implementation of an http client that
+uses pooled sockets.
+
+__Examples__
+
+```js
+// create an HTTP GET request
+var request = forge.http.createRequest({method: 'GET', path: url.path});
+
+// send the request somewhere
+sendSomehow(request.toString());
+
+// receive response
+var buffer = forge.util.createBuffer();
+var response = forge.http.createResponse();
+var someAsyncDataHandler = function(bytes) {
+ if(!response.bodyReceived) {
+ buffer.putBytes(bytes);
+ if(!response.headerReceived) {
+ if(response.readHeader(buffer)) {
+ console.log('HTTP response header: ' + response.toString());
+ }
+ }
+ if(response.headerReceived && !response.bodyReceived) {
+ if(response.readBody(buffer)) {
+ console.log('HTTP response body: ' + response.body);
+ }
+ }
+ }
+};
+```
+
+<a name="ssh" />
+### SSH
+
+Provides some SSH utility functions.
+
+__Examples__
+
+```js
+// encodes (and optionally encrypts) a private RSA key as a Putty PPK file
+forge.ssh.privateKeyToPutty(privateKey, passphrase, comment);
+
+// encodes a public RSA key as an OpenSSH file
+forge.ssh.publicKeyToOpenSSH(key, comment);
+
+// encodes a private RSA key as an OpenSSH file
+forge.ssh.privateKeyToOpenSSH(privateKey, passphrase);
+
+// gets the SSH public key fingerprint in a byte buffer
+forge.ssh.getPublicKeyFingerprint(key);
+
+// gets a hex-encoded, colon-delimited SSH public key fingerprint
+forge.ssh.getPublicKeyFingerprint(key, {encoding: 'hex', delimiter: ':'});
+```
+
+<a name="xhr" />
+### XHR
+
+Provides an XmlHttpRequest implementation using forge.http as a backend.
+
+__Examples__
+
+```js
+```
+
+<a name="socket" />
+### Sockets
+
+Provides an interface to create and use raw sockets provided via Flash.
+
+__Examples__
+
+```js
+```
+
+---------------------------------------
+## Ciphers
+
+<a name="cipher" />
+### CIPHER
+
+Provides a basic API for block encryption and decryption. There is built-in
+support for the ciphers: [AES][], [3DES][], and [DES][], and for the modes
+of operation: [ECB][], [CBC][], [CFB][], [OFB][], [CTR][], and [GCM][].
+
+These algorithms are currently supported:
+
+* AES-ECB
+* AES-CBC
+* AES-CFB
+* AES-OFB
+* AES-CTR
+* AES-GCM
+* 3DES-ECB
+* 3DES-CBC
+* DES-ECB
+* DES-CBC
+
+When using an [AES][] algorithm, the key size will determine whether
+AES-128, AES-192, or AES-256 is used (all are supported). When a [DES][]
+algorithm is used, the key size will determine whether [3DES][] or regular
+[DES][] is used. Use a [3DES][] algorithm to enforce Triple-DES.
+
+__Examples__
+
+```js
+// generate a random key and IV
+// Note: a key size of 16 bytes will use AES-128, 24 => AES-192, 32 => AES-256
+var key = forge.random.getBytesSync(16);
+var iv = forge.random.getBytesSync(16);
+
+/* alternatively, generate a password-based 16-byte key
+var salt = forge.random.getBytesSync(128);
+var key = forge.pkcs5.pbkdf2('password', salt, numIterations, 16);
+*/
+
+// encrypt some bytes using CBC mode
+// (other modes include: ECB, CFB, OFB, CTR, and GCM)
+var cipher = forge.cipher.createCipher('AES-CBC', key);
+cipher.start({iv: iv});
+cipher.update(forge.util.createBuffer(someBytes));
+cipher.finish();
+var encrypted = cipher.output;
+// outputs encrypted hex
+console.log(encrypted.toHex());
+
+// decrypt some bytes using CBC mode
+// (other modes include: CFB, OFB, CTR, and GCM)
+var decipher = forge.cipher.createDecipher('AES-CBC', key);
+decipher.start({iv: iv});
+decipher.update(encrypted);
+decipher.finish();
+// outputs decrypted hex
+console.log(decipher.output.toHex());
+
+// encrypt some bytes using GCM mode
+var cipher = forge.cipher.createCipher('AES-GCM', key);
+cipher.start({
+ iv: iv, // should be a 12-byte binary-encoded string or byte buffer
+ additionalData: 'binary-encoded string', // optional
+ tagLength: 128 // optional, defaults to 128 bits
+});
+cipher.update(forge.util.createBuffer(someBytes));
+cipher.finish();
+var encrypted = cipher.output;
+var tag = cipher.mode.tag;
+// outputs encrypted hex
+console.log(encrypted.toHex());
+// outputs authentication tag
+console.log(tag.toHex());
+
+// decrypt some bytes using GCM mode
+var decipher = forge.cipher.createDecipher('AES-GCM', key);
+decipher.start({
+ iv: iv,
+ additionalData: 'binary-encoded string', // optional
+ tagLength: 128, // optional, defaults to 128 bits
+ tag: tag // authentication tag from encryption
+});
+decipher.update(encrypted);
+var pass = decipher.finish();
+// pass is false if there was a failure (eg: authentication tag didn't match)
+if(pass) {
+ // outputs decrypted hex
+ console.log(decipher.output.toHex());
+}
+```
+
+Using forge in node.js to match openssl's "enc" command line tool (**Note**: OpenSSL "enc" uses a non-standard file format with a custom key derivation function and a fixed iteration count of 1, which some consider less secure than alternatives such as [OpenPGP](https://tools.ietf.org/html/rfc4880)/[GnuPG](https://www.gnupg.org/)):
+
+```js
+var forge = require('node-forge');
+var fs = require('fs');
+
+// openssl enc -des3 -in input.txt -out input.enc
+function encrypt(password) {
+ var input = fs.readFileSync('input.txt', {encoding: 'binary'});
+
+ // 3DES key and IV sizes
+ var keySize = 24;
+ var ivSize = 8;
+
+ // get derived bytes
+ // Notes:
+ // 1. If using an alternative hash (eg: "-md sha1") pass
+ // "forge.md.sha1.create()" as the final parameter.
+ // 2. If using "-nosalt", set salt to null.
+ var salt = forge.random.getBytesSync(8);
+ // var md = forge.md.sha1.create(); // "-md sha1"
+ var derivedBytes = forge.pbe.opensslDeriveBytes(
+ password, salt, keySize + ivSize/*, md*/);
+ var buffer = forge.util.createBuffer(derivedBytes);
+ var key = buffer.getBytes(keySize);
+ var iv = buffer.getBytes(ivSize);
+
+ var cipher = forge.cipher.createCipher('3DES-CBC', key);
+ cipher.start({iv: iv});
+ cipher.update(forge.util.createBuffer(input, 'binary'));
+ cipher.finish();
+
+ var output = forge.util.createBuffer();
+
+ // if using a salt, prepend this to the output:
+ if(salt !== null) {
+ output.putBytes('Salted__'); // (add to match openssl tool output)
+ output.putBytes(salt);
+ }
+ output.putBuffer(cipher.output);
+
+ fs.writeFileSync('input.enc', output.getBytes(), {encoding: 'binary'});
+}
+
+// openssl enc -d -des3 -in input.enc -out input.dec.txt
+function decrypt(password) {
+ var input = fs.readFileSync('input.enc', {encoding: 'binary'});
+
+ // parse salt from input
+ input = forge.util.createBuffer(input, 'binary');
+ // skip "Salted__" (if known to be present)
+ input.getBytes('Salted__'.length);
+ // read 8-byte salt
+ var salt = input.getBytes(8);
+
+ // Note: if using "-nosalt", skip above parsing and use
+ // var salt = null;
+
+ // 3DES key and IV sizes
+ var keySize = 24;
+ var ivSize = 8;
+
+ var derivedBytes = forge.pbe.opensslDeriveBytes(
+ password, salt, keySize + ivSize);
+ var buffer = forge.util.createBuffer(derivedBytes);
+ var key = buffer.getBytes(keySize);
+ var iv = buffer.getBytes(ivSize);
+
+ var decipher = forge.cipher.createDecipher('3DES-CBC', key);
+ decipher.start({iv: iv});
+ decipher.update(input);
+ var result = decipher.finish(); // check 'result' for true/false
+
+ fs.writeFileSync(
+ 'input.dec.txt', decipher.output.getBytes(), {encoding: 'binary'});
+}
+```
+
+<a name="aes" />
+### AES
+
+Provides [AES][] encryption and decryption in [CBC][], [CFB][], [OFB][],
+[CTR][], and [GCM][] modes. See [CIPHER](#cipher) for examples.
+
+<a name="des" />
+### DES
+
+Provides [3DES][] and [DES][] encryption and decryption in [ECB][] and
+[CBC][] modes. See [CIPHER](#cipher) for examples.
+
+<a name="rc2" />
+### RC2
+
+__Examples__
+
+```js
+// generate a random key and IV
+var key = forge.random.getBytesSync(16);
+var iv = forge.random.getBytesSync(8);
+
+// encrypt some bytes
+var cipher = forge.rc2.createEncryptionCipher(key);
+cipher.start(iv);
+cipher.update(forge.util.createBuffer(someBytes));
+cipher.finish();
+var encrypted = cipher.output;
+// outputs encrypted hex
+console.log(encrypted.toHex());
+
+// decrypt some bytes
+var cipher = forge.rc2.createDecryptionCipher(key);
+cipher.start(iv);
+cipher.update(encrypted);
+cipher.finish();
+// outputs decrypted hex
+console.log(cipher.output.toHex());
+```
+---------------------------------------
+## PKI
+
+Provides [X.509][] certificate and RSA public and private key encoding,
+decoding, encryption/decryption, and signing/verifying.
+
+<a name="rsa" />
+### RSA
+
+__Examples__
+
+```js
+var rsa = forge.pki.rsa;
+
+// generate an RSA key pair synchronously
+var keypair = rsa.generateKeyPair({bits: 2048, e: 0x10001});
+
+// generate an RSA key pair asynchronously (uses web workers if available)
+// use workers: -1 to run a fast core estimator to optimize # of workers
+rsa.generateKeyPair({bits: 2048, workers: 2}, function(err, keypair) {
+ // keypair.privateKey, keypair.publicKey
+});
+
+// generate an RSA key pair in steps that attempt to run for a specified period
+// of time on the main JS thread
+var state = rsa.createKeyPairGenerationState(2048, 0x10001);
+var step = function() {
+ // run for 100 ms
+ if(!rsa.stepKeyPairGenerationState(state, 100)) {
+ setTimeout(step, 1);
+ }
+ else {
+ // done, turn off progress indicator, use state.keys
+ }
+};
+// turn on progress indicator, schedule generation to run
+setTimeout(step);
+
+// sign data with a private key and output DigestInfo DER-encoded bytes
+// (defaults to RSASSA PKCS#1 v1.5)
+var md = forge.md.sha1.create();
+md.update('sign this', 'utf8');
+var signature = privateKey.sign(md);
+
+// verify data with a public key
+// (defaults to RSASSA PKCS#1 v1.5)
+var verified = publicKey.verify(md.digest().bytes(), signature);
+
+// sign data using RSASSA-PSS where PSS uses a SHA-1 hash, a SHA-1 based
+// masking function MGF1, and a 20 byte salt
+var md = forge.md.sha1.create();
+md.update('sign this', 'utf8');
+var pss = forge.pss.create({
+ md: forge.md.sha1.create(),
+ mgf: forge.mgf.mgf1.create(forge.md.sha1.create()),
+ saltLength: 20
+ // optionally pass 'prng' with a custom PRNG implementation
+ // optionalls pass 'salt' with a forge.util.ByteBuffer w/custom salt
+});
+var signature = privateKey.sign(md, pss);
+
+// verify RSASSA-PSS signature
+var pss = forge.pss.create({
+ md: forge.md.sha1.create(),
+ mgf: forge.mgf.mgf1.create(forge.md.sha1.create()),
+ saltLength: 20
+ // optionally pass 'prng' with a custom PRNG implementation
+});
+var md = forge.md.sha1.create();
+md.update('sign this', 'utf8');
+publicKey.verify(md.digest().getBytes(), signature, pss);
+
+// encrypt data with a public key (defaults to RSAES PKCS#1 v1.5)
+var encrypted = publicKey.encrypt(bytes);
+
+// decrypt data with a private key (defaults to RSAES PKCS#1 v1.5)
+var decrypted = privateKey.decrypt(encrypted);
+
+// encrypt data with a public key using RSAES PKCS#1 v1.5
+var encrypted = publicKey.encrypt(bytes, 'RSAES-PKCS1-V1_5');
+
+// decrypt data with a private key using RSAES PKCS#1 v1.5
+var decrypted = privateKey.decrypt(encrypted, 'RSAES-PKCS1-V1_5');
+
+// encrypt data with a public key using RSAES-OAEP
+var encrypted = publicKey.encrypt(bytes, 'RSA-OAEP');
+
+// decrypt data with a private key using RSAES-OAEP
+var decrypted = privateKey.decrypt(encrypted, 'RSA-OAEP');
+
+// encrypt data with a public key using RSAES-OAEP/SHA-256
+var encrypted = publicKey.encrypt(bytes, 'RSA-OAEP', {
+ md: forge.md.sha256.create()
+});
+
+// decrypt data with a private key using RSAES-OAEP/SHA-256
+var decrypted = privateKey.decrypt(encrypted, 'RSA-OAEP', {
+ md: forge.md.sha256.create()
+});
+
+// encrypt data with a public key using RSAES-OAEP/SHA-256/MGF1-SHA-1
+// compatible with Java's RSA/ECB/OAEPWithSHA-256AndMGF1Padding
+var encrypted = publicKey.encrypt(bytes, 'RSA-OAEP', {
+ md: forge.md.sha256.create(),
+ mgf1: {
+ md: forge.md.sha1.create()
+ }
+});
+
+// decrypt data with a private key using RSAES-OAEP/SHA-256/MGF1-SHA-1
+// compatible with Java's RSA/ECB/OAEPWithSHA-256AndMGF1Padding
+var decrypted = privateKey.decrypt(encrypted, 'RSA-OAEP', {
+ md: forge.md.sha256.create(),
+ mgf1: {
+ md: forge.md.sha1.create()
+ }
+});
+
+```
+
+<a name="rsakem" />
+### RSA-KEM
+
+__Examples__
+
+```js
+// generate an RSA key pair asynchronously (uses web workers if available)
+// use workers: -1 to run a fast core estimator to optimize # of workers
+forge.rsa.generateKeyPair({bits: 2048, workers: -1}, function(err, keypair) {
+ // keypair.privateKey, keypair.publicKey
+});
+
+// generate and encapsulate a 16-byte secret key
+var kdf1 = new forge.kem.kdf1(forge.md.sha1.create());
+var kem = forge.kem.rsa.create(kdf1);
+var result = kem.encrypt(keypair.publicKey, 16);
+// result has 'encapsulation' and 'key'
+
+// encrypt some bytes
+var iv = forge.random.getBytesSync(12);
+var someBytes = 'hello world!';
+var cipher = forge.cipher.createCipher('AES-GCM', result.key);
+cipher.start({iv: iv});
+cipher.update(forge.util.createBuffer(someBytes));
+cipher.finish();
+var encrypted = cipher.output.getBytes();
+var tag = cipher.mode.tag.getBytes();
+
+// send 'encrypted', 'iv', 'tag', and result.encapsulation to recipient
+
+// decrypt encapsulated 16-byte secret key
+var kdf1 = new forge.kem.kdf1(forge.md.sha1.create());
+var kem = forge.kem.rsa.create(kdf1);
+var key = kem.decrypt(keypair.privateKey, result.encapsulation, 16);
+
+// decrypt some bytes
+var decipher = forge.cipher.createDecipher('AES-GCM', key);
+decipher.start({iv: iv, tag: tag});
+decipher.update(forge.util.createBuffer(encrypted));
+var pass = decipher.finish();
+// pass is false if there was a failure (eg: authentication tag didn't match)
+if(pass) {
+ // outputs 'hello world!'
+ console.log(decipher.output.getBytes());
+}
+
+```
+
+<a name="x509" />
+### X.509
+
+__Examples__
+
+```js
+var pki = forge.pki;
+
+// convert a PEM-formatted public key to a Forge public key
+var publicKey = pki.publicKeyFromPem(pem);
+
+// convert a Forge public key to PEM-format
+var pem = pki.publicKeyToPem(publicKey);
+
+// convert an ASN.1 SubjectPublicKeyInfo to a Forge public key
+var publicKey = pki.publicKeyFromAsn1(subjectPublicKeyInfo);
+
+// convert a Forge public key to an ASN.1 SubjectPublicKeyInfo
+var subjectPublicKeyInfo = pki.publicKeyToAsn1(publicKey);
+
+// gets a SHA-1 RSAPublicKey fingerprint a byte buffer
+pki.getPublicKeyFingerprint(key);
+
+// gets a SHA-1 SubjectPublicKeyInfo fingerprint a byte buffer
+pki.getPublicKeyFingerprint(key, {type: 'SubjectPublicKeyInfo'});
+
+// gets a hex-encoded, colon-delimited SHA-1 RSAPublicKey public key fingerprint
+pki.getPublicKeyFingerprint(key, {encoding: 'hex', delimiter: ':'});
+
+// gets a hex-encoded, colon-delimited SHA-1 SubjectPublicKeyInfo public key fingerprint
+pki.getPublicKeyFingerprint(key, {
+ type: 'SubjectPublicKeyInfo',
+ encoding: 'hex',
+ delimiter: ':'
+});
+
+// gets a hex-encoded, colon-delimited MD5 RSAPublicKey public key fingerprint
+pki.getPublicKeyFingerprint(key, {
+ md: forge.md.md5.create(),
+ encoding: 'hex',
+ delimiter: ':'
+});
+
+// creates a CA store
+var caStore = pki.createCaStore([/* PEM-encoded cert */, ...]);
+
+// add a certificate to the CA store
+caStore.addCertificate(certObjectOrPemString);
+
+// gets the issuer (its certificate) for the given certificate
+var issuerCert = caStore.getIssuer(subjectCert);
+
+// verifies a certificate chain against a CA store
+pki.verifyCertificateChain(caStore, chain, customVerifyCallback);
+
+// signs a certificate using the given private key
+cert.sign(privateKey);
+
+// signs a certificate using SHA-256 instead of SHA-1
+cert.sign(privateKey, forge.md.sha256.create());
+
+// verifies an issued certificate using the certificates public key
+var verified = issuer.verify(issued);
+
+// generate a keypair and create an X.509v3 certificate
+var keys = pki.rsa.generateKeyPair(2048);
+var cert = pki.createCertificate();
+cert.publicKey = keys.publicKey;
+// alternatively set public key from a csr
+//cert.publicKey = csr.publicKey;
+cert.serialNumber = '01';
+cert.validity.notBefore = new Date();
+cert.validity.notAfter = new Date();
+cert.validity.notAfter.setFullYear(cert.validity.notBefore.getFullYear() + 1);
+var attrs = [{
+ name: 'commonName',
+ value: 'example.org'
+}, {
+ name: 'countryName',
+ value: 'US'
+}, {
+ shortName: 'ST',
+ value: 'Virginia'
+}, {
+ name: 'localityName',
+ value: 'Blacksburg'
+}, {
+ name: 'organizationName',
+ value: 'Test'
+}, {
+ shortName: 'OU',
+ value: 'Test'
+}];
+cert.setSubject(attrs);
+// alternatively set subject from a csr
+//cert.setSubject(csr.subject.attributes);
+cert.setIssuer(attrs);
+cert.setExtensions([{
+ name: 'basicConstraints',
+ cA: true
+}, {
+ name: 'keyUsage',
+ keyCertSign: true,
+ digitalSignature: true,
+ nonRepudiation: true,
+ keyEncipherment: true,
+ dataEncipherment: true
+}, {
+ name: 'extKeyUsage',
+ serverAuth: true,
+ clientAuth: true,
+ codeSigning: true,
+ emailProtection: true,
+ timeStamping: true
+}, {
+ name: 'nsCertType',
+ client: true,
+ server: true,
+ email: true,
+ objsign: true,
+ sslCA: true,
+ emailCA: true,
+ objCA: true
+}, {
+ name: 'subjectAltName',
+ altNames: [{
+ type: 6, // URI
+ value: 'http://example.org/webid#me'
+ }, {
+ type: 7, // IP
+ ip: '127.0.0.1'
+ }]
+}, {
+ name: 'subjectKeyIdentifier'
+}]);
+/* alternatively set extensions from a csr
+var extensions = csr.getAttribute({name: 'extensionRequest'}).extensions;
+// optionally add more extensions
+extensions.push.apply(extensions, [{
+ name: 'basicConstraints',
+ cA: true
+}, {
+ name: 'keyUsage',
+ keyCertSign: true,
+ digitalSignature: true,
+ nonRepudiation: true,
+ keyEncipherment: true,
+ dataEncipherment: true
+}]);
+cert.setExtensions(extensions);
+*/
+// self-sign certificate
+cert.sign(keys.privateKey);
+
+// convert a Forge certificate to PEM
+var pem = pki.certificateToPem(cert);
+
+// convert a Forge certificate from PEM
+var cert = pki.certificateFromPem(pem);
+
+// convert an ASN.1 X.509x3 object to a Forge certificate
+var cert = pki.certificateFromAsn1(obj);
+
+// convert a Forge certificate to an ASN.1 X.509v3 object
+var asn1Cert = pki.certificateToAsn1(cert);
+```
+
+<a name="pkcs5" />
+### PKCS#5
+
+Provides the password-based key-derivation function from [PKCS#5][].
+
+__Examples__
+
+```js
+// generate a password-based 16-byte key
+// note an optional message digest can be passed as the final parameter
+var salt = forge.random.getBytesSync(128);
+var derivedKey = forge.pkcs5.pbkdf2('password', salt, numIterations, 16);
+
+// generate key asynchronously
+// note an optional message digest can be passed before the callback
+forge.pkcs5.pbkdf2('password', salt, numIterations, 16, function(err, derivedKey) {
+ // do something w/derivedKey
+});
+```
+
+<a name="pkcs7" />
+### PKCS#7
+
+Provides cryptographically protected messages from [PKCS#7][].
+
+__Examples__
+
+```js
+// convert a message from PEM
+var p7 = forge.pkcs7.messageFromPem(pem);
+// look at p7.recipients
+
+// find a recipient by the issuer of a certificate
+var recipient = p7.findRecipient(cert);
+
+// decrypt
+p7.decrypt(p7.recipients[0], privateKey);
+
+// create a p7 enveloped message
+var p7 = forge.pkcs7.createEnvelopedData();
+
+// add a recipient
+var cert = forge.pki.certificateFromPem(certPem);
+p7.addRecipient(cert);
+
+// set content
+p7.content = forge.util.createBuffer('Hello');
+
+// encrypt
+p7.encrypt();
+
+// convert message to PEM
+var pem = forge.pkcs7.messageToPem(p7);
+
+// create a degenerate PKCS#7 certificate container
+// (CRLs not currently supported, only certificates)
+var p7 = forge.pkcs7.createSignedData();
+p7.addCertificate(certOrCertPem1);
+p7.addCertificate(certOrCertPem2);
+var pem = forge.pkcs7.messageToPem(p7);
+```
+
+<a name="pkcs8" />
+### PKCS#8
+
+__Examples__
+
+```js
+var pki = forge.pki;
+
+// convert a PEM-formatted private key to a Forge private key
+var privateKey = pki.privateKeyFromPem(pem);
+
+// convert a Forge private key to PEM-format
+var pem = pki.privateKeyToPem(privateKey);
+
+// convert an ASN.1 PrivateKeyInfo or RSAPrivateKey to a Forge private key
+var privateKey = pki.privateKeyFromAsn1(rsaPrivateKey);
+
+// convert a Forge private key to an ASN.1 RSAPrivateKey
+var rsaPrivateKey = pki.privateKeyToAsn1(privateKey);
+
+// wrap an RSAPrivateKey ASN.1 object in a PKCS#8 ASN.1 PrivateKeyInfo
+var privateKeyInfo = pki.wrapRsaPrivateKey(rsaPrivateKey);
+
+// convert a PKCS#8 ASN.1 PrivateKeyInfo to PEM
+var pem = pki.privateKeyInfoToPem(privateKeyInfo);
+
+// encrypts a PrivateKeyInfo and outputs an EncryptedPrivateKeyInfo
+var encryptedPrivateKeyInfo = pki.encryptPrivateKeyInfo(
+ privateKeyInfo, 'password', {
+ algorithm: 'aes256', // 'aes128', 'aes192', 'aes256', '3des'
+ });
+
+// decrypts an ASN.1 EncryptedPrivateKeyInfo
+var privateKeyInfo = pki.decryptPrivateKeyInfo(
+ encryptedPrivateKeyInfo, 'password');
+
+// converts an EncryptedPrivateKeyInfo to PEM
+var pem = pki.encryptedPrivateKeyToPem(encryptedPrivateKeyInfo);
+
+// converts a PEM-encoded EncryptedPrivateKeyInfo to ASN.1 format
+var encryptedPrivateKeyInfo = pki.encryptedPrivateKeyFromPem(pem);
+
+// wraps and encrypts a Forge private key and outputs it in PEM format
+var pem = pki.encryptRsaPrivateKey(privateKey, 'password');
+
+// encrypts a Forge private key and outputs it in PEM format using OpenSSL's
+// proprietary legacy format + encapsulated PEM headers (DEK-Info)
+var pem = pki.encryptRsaPrivateKey(privateKey, 'password', {legacy: true});
+
+// decrypts a PEM-formatted, encrypted private key
+var privateKey = pki.decryptRsaPrivateKey(pem, 'password');
+
+// sets an RSA public key from a private key
+var publicKey = pki.setRsaPublicKey(privateKey.n, privateKey.e);
+```
+
+<a name="pkcs10" />
+### PKCS#10
+
+Provides certification requests or certificate signing requests (CSR) from
+[PKCS#10][].
+
+__Examples__
+
+```js
+// generate a key pair
+var keys = forge.pki.rsa.generateKeyPair(1024);
+
+// create a certification request (CSR)
+var csr = forge.pki.createCertificationRequest();
+csr.publicKey = keys.publicKey;
+csr.setSubject([{
+ name: 'commonName',
+ value: 'example.org'
+}, {
+ name: 'countryName',
+ value: 'US'
+}, {
+ shortName: 'ST',
+ value: 'Virginia'
+}, {
+ name: 'localityName',
+ value: 'Blacksburg'
+}, {
+ name: 'organizationName',
+ value: 'Test'
+}, {
+ shortName: 'OU',
+ value: 'Test'
+}]);
+// set (optional) attributes
+csr.setAttributes([{
+ name: 'challengePassword',
+ value: 'password'
+}, {
+ name: 'unstructuredName',
+ value: 'My Company, Inc.'
+}, {
+ name: 'extensionRequest',
+ extensions: [{
+ name: 'subjectAltName',
+ altNames: [{
+ // 2 is DNS type
+ type: 2,
+ value: 'test.domain.com'
+ }, {
+ type: 2,
+ value: 'other.domain.com',
+ }, {
+ type: 2,
+ value: 'www.domain.net'
+ }]
+ }]
+}]);
+
+// sign certification request
+csr.sign(keys.privateKey);
+
+// verify certification request
+var verified = csr.verify();
+
+// convert certification request to PEM-format
+var pem = forge.pki.certificationRequestToPem(csr);
+
+// convert a Forge certification request from PEM-format
+var csr = forge.pki.certificationRequestFromPem(pem);
+
+// get an attribute
+csr.getAttribute({name: 'challengePassword'});
+
+// get extensions array
+csr.getAttribute({name: 'extensionRequest'}).extensions;
+
+```
+
+<a name="pkcs12" />
+### PKCS#12
+
+Provides the cryptographic archive file format from [PKCS#12][].
+
+__Examples__
+
+```js
+// decode p12 from base64
+var p12Der = forge.util.decode64(p12b64);
+// get p12 as ASN.1 object
+var p12Asn1 = forge.asn1.fromDer(p12Der);
+// decrypt p12 using the password 'password'
+var p12 = forge.pkcs12.pkcs12FromAsn1(p12Asn1, 'password');
+// decrypt p12 using non-strict parsing mode (resolves some ASN.1 parse errors)
+var p12 = forge.pkcs12.pkcs12FromAsn1(p12Asn1, false, 'password');
+// decrypt p12 using literally no password (eg: Mac OS X/apple push)
+var p12 = forge.pkcs12.pkcs12FromAsn1(p12Asn1);
+// decrypt p12 using an "empty" password (eg: OpenSSL with no password input)
+var p12 = forge.pkcs12.pkcs12FromAsn1(p12Asn1, '');
+// p12.safeContents is an array of safe contents, each of
+// which contains an array of safeBags
+
+// get bags by friendlyName
+var bags = p12.getBags({friendlyName: 'test'});
+// bags are key'd by attribute type (here "friendlyName")
+// and the key values are an array of matching objects
+var cert = bags.friendlyName[0];
+
+// get bags by localKeyId
+var bags = p12.getBags({localKeyId: buffer});
+// bags are key'd by attribute type (here "localKeyId")
+// and the key values are an array of matching objects
+var cert = bags.localKeyId[0];
+
+// get bags by localKeyId (input in hex)
+var bags = p12.getBags({localKeyIdHex: '7b59377ff142d0be4565e9ac3d396c01401cd879'});
+// bags are key'd by attribute type (here "localKeyId", *not* "localKeyIdHex")
+// and the key values are an array of matching objects
+var cert = bags.localKeyId[0];
+
+// get bags by type
+var bags = p12.getBags({bagType: forge.pki.oids.certBag});
+// bags are key'd by bagType and each bagType key's value
+// is an array of matches (in this case, certificate objects)
+var cert = bags[forge.pki.oids.certBag][0];
+
+// get bags by friendlyName and filter on bag type
+var bags = p12.getBags({
+ friendlyName: 'test',
+ bagType: forge.pki.oids.certBag
+});
+
+// get key bags
+var bags = p12.getBags({bagType: forge.pki.oids.keyBag});
+// get key
+var bag = bags[forge.pki.oids.keyBag][0];
+var key = bag.key;
+// if the key is in a format unrecognized by forge then
+// bag.key will be `null`, use bag.asn1 to get the ASN.1
+// representation of the key
+if(bag.key === null) {
+ var keyAsn1 = bag.asn1;
+ // can now convert back to DER/PEM/etc for export
+}
+
+// generate a p12 using AES (default)
+var p12Asn1 = forge.pkcs12.toPkcs12Asn1(
+ privateKey, certificateChain, 'password');
+
+// generate a p12 that can be imported by Chrome/Firefox
+// (requires the use of Triple DES instead of AES)
+var p12Asn1 = forge.pkcs12.toPkcs12Asn1(
+ privateKey, certificateChain, 'password',
+ {algorithm: '3des'});
+
+// base64-encode p12
+var p12Der = forge.asn1.toDer(p12Asn1).getBytes();
+var p12b64 = forge.util.encode64(p12Der);
+
+// create download link for p12
+var a = document.createElement('a');
+a.download = 'example.p12';
+a.setAttribute('href', 'data:application/x-pkcs12;base64,' + p12b64);
+a.appendChild(document.createTextNode('Download'));
+```
+
+<a name="asn" />
+### ASN.1
+
+Provides [ASN.1][] DER encoding and decoding.
+
+__Examples__
+
+```js
+var asn1 = forge.asn1;
+
+// create a SubjectPublicKeyInfo
+var subjectPublicKeyInfo =
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
+ // AlgorithmIdentifier
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
+ // algorithm
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
+ asn1.oidToDer(pki.oids['rsaEncryption']).getBytes()),
+ // parameters (null)
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
+ ]),
+ // subjectPublicKey
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.BITSTRING, false, [
+ // RSAPublicKey
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
+ // modulus (n)
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
+ _bnToBytes(key.n)),
+ // publicExponent (e)
+ asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
+ _bnToBytes(key.e))
+ ])
+ ])
+ ]);
+
+// serialize an ASN.1 object to DER format
+var derBuffer = asn1.toDer(subjectPublicKeyInfo);
+
+// deserialize to an ASN.1 object from a byte buffer filled with DER data
+var object = asn1.fromDer(derBuffer);
+
+// convert an OID dot-separated string to a byte buffer
+var derOidBuffer = asn1.oidToDer('1.2.840.113549.1.1.5');
+
+// convert a byte buffer with a DER-encoded OID to a dot-separated string
+console.log(asn1.derToDer(derOidBuffer));
+// output: 1.2.840.113549.1.1.5
+
+// validates that an ASN.1 object matches a particular ASN.1 structure and
+// captures data of interest from that structure for easy access
+var publicKeyValidator = {
+ name: 'SubjectPublicKeyInfo',
+ tagClass: asn1.Class.UNIVERSAL,
+ type: asn1.Type.SEQUENCE,
+ constructed: true,
+ captureAsn1: 'subjectPublicKeyInfo',
+ value: [{
+ name: 'SubjectPublicKeyInfo.AlgorithmIdentifier',
+ tagClass: asn1.Class.UNIVERSAL,
+ type: asn1.Type.SEQUENCE,
+ constructed: true,
+ value: [{
+ name: 'AlgorithmIdentifier.algorithm',
+ tagClass: asn1.Class.UNIVERSAL,
+ type: asn1.Type.OID,
+ constructed: false,
+ capture: 'publicKeyOid'
+ }]
+ }, {
+ // subjectPublicKey
+ name: 'SubjectPublicKeyInfo.subjectPublicKey',
+ tagClass: asn1.Class.UNIVERSAL,
+ type: asn1.Type.BITSTRING,
+ constructed: false,
+ value: [{
+ // RSAPublicKey
+ name: 'SubjectPublicKeyInfo.subjectPublicKey.RSAPublicKey',
+ tagClass: asn1.Class.UNIVERSAL,
+ type: asn1.Type.SEQUENCE,
+ constructed: true,
+ optional: true,
+ captureAsn1: 'rsaPublicKey'
+ }]
+ }]
+};
+
+var capture = {};
+var errors = [];
+if(!asn1.validate(
+ publicKeyValidator, subjectPublicKeyInfo, validator, capture, errors)) {
+ throw 'ASN.1 object is not a SubjectPublicKeyInfo.';
+}
+// capture.subjectPublicKeyInfo contains the full ASN.1 object
+// capture.rsaPublicKey contains the full ASN.1 object for the RSA public key
+// capture.publicKeyOid only contains the value for the OID
+var oid = asn1.derToOid(capture.publicKeyOid);
+if(oid !== pki.oids['rsaEncryption']) {
+ throw 'Unsupported OID.';
+}
+
+// pretty print an ASN.1 object to a string for debugging purposes
+asn1.prettyPrint(object);
+```
+
+---------------------------------------
+## Message Digests
+
+<a name="sha1" />
+### SHA1
+
+Provides [SHA-1][] message digests.
+
+__Examples__
+
+```js
+var md = forge.md.sha1.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: 2fd4e1c67a2d28fced849ee1bb76e7391b93eb12
+```
+
+<a name="sha256" />
+### SHA256
+
+Provides [SHA-256][] message digests.
+
+__Examples__
+
+```js
+var md = forge.md.sha256.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592
+```
+
+<a name="sha384" />
+### SHA384
+
+Provides [SHA-384][] message digests.
+
+__Examples__
+
+```js
+var md = forge.md.sha384.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: ca737f1014a48f4c0b6dd43cb177b0afd9e5169367544c494011e3317dbf9a509cb1e5dc1e85a941bbee3d7f2afbc9b1
+```
+
+<a name="sha512" />
+### SHA512
+
+Provides [SHA-512][] message digests.
+
+__Examples__
+
+```js
+// SHA-512
+var md = forge.md.sha512.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: 07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a309d785436bbb642e93a252a954f23912547d1e8a3b5ed6e1bfd7097821233fa0538f3db854fee6
+
+// SHA-512/224
+var md = forge.md.sha512.sha224.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: 944cd2847fb54558d4775db0485a50003111c8e5daa63fe722c6aa37
+
+// SHA-512/256
+var md = forge.md.sha512.sha256.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: dd9d67b371519c339ed8dbd25af90e976a1eeefd4ad3d889005e532fc5bef04d
+```
+
+<a name="md5" />
+### MD5
+
+Provides [MD5][] message digests.
+
+__Examples__
+
+```js
+var md = forge.md.md5.create();
+md.update('The quick brown fox jumps over the lazy dog');
+console.log(md.digest().toHex());
+// output: 9e107d9d372bb6826bd81d3542a419d6
+```
+
+<a name="hmac" />
+### HMAC
+
+Provides [HMAC][] w/any supported message digest algorithm.
+
+__Examples__
+
+```js
+var hmac = forge.hmac.create();
+hmac.start('sha1', 'Jefe');
+hmac.update('what do ya want for nothing?');
+console.log(hmac.digest().toHex());
+// output: effcdf6ae5eb2fa2d27416d5f184df9c259a7c79
+```
+
+---------------------------------------
+## Utilities
+
+<a name="prime" />
+### Prime
+
+Provides an API for generating large, random, probable primes.
+
+__Examples__
+
+```js
+// generate a random prime on the main JS thread
+var bits = 1024;
+forge.prime.generateProbablePrime(bits, function(err, num) {
+ console.log('random prime', num.toString(16));
+});
+
+// generate a random prime using Web Workers (if available, otherwise
+// falls back to the main thread)
+var bits = 1024;
+var options = {
+ algorithm: {
+ name: 'PRIMEINC',
+ workers: -1 // auto-optimize # of workers
+ }
+};
+forge.prime.generateProbablePrime(bits, options, function(err, num) {
+ console.log('random prime', num.toString(16));
+});
+```
+
+<a name="prng" />
+### PRNG
+
+Provides a [Fortuna][]-based cryptographically-secure pseudo-random number
+generator, to be used with a cryptographic function backend, e.g. [AES][]. An
+implementation using [AES][] as a backend is provided. An API for collecting
+entropy is given, though if window.crypto.getRandomValues is available, it will
+be used automatically.
+
+__Examples__
+
+```js
+// get some random bytes synchronously
+var bytes = forge.random.getBytesSync(32);
+console.log(forge.util.bytesToHex(bytes));
+
+// get some random bytes asynchronously
+forge.random.getBytes(32, function(err, bytes) {
+ console.log(forge.util.bytesToHex(bytes));
+});
+
+// collect some entropy if you'd like
+forge.random.collect(someRandomBytes);
+jQuery().mousemove(function(e) {
+ forge.random.collectInt(e.clientX, 16);
+ forge.random.collectInt(e.clientY, 16);
+});
+
+// specify a seed file for use with the synchronous API if you'd like
+forge.random.seedFileSync = function(needed) {
+ // get 'needed' number of random bytes from somewhere
+ return fetchedRandomBytes;
+};
+
+// specify a seed file for use with the asynchronous API if you'd like
+forge.random.seedFile = function(needed, callback) {
+ // get the 'needed' number of random bytes from somewhere
+ callback(null, fetchedRandomBytes);
+});
+
+// register the main thread to send entropy or a Web Worker to receive
+// entropy on demand from the main thread
+forge.random.registerWorker(self);
+
+// generate a new instance of a PRNG with no collected entropy
+var myPrng = forge.random.createInstance();
+```
+
+<a name="task" />
+### Tasks
+
+Provides queuing and synchronizing tasks in a web application.
+
+__Examples__
+
+```js
+```
+
+<a name="util" />
+### Utilities
+
+Provides utility functions, including byte buffer support, base64,
+bytes to/from hex, zlib inflate/deflate, etc.
+
+__Examples__
+
+```js
+// encode/decode base64
+var encoded = forge.util.encode64(str);
+var str = forge.util.decode64(encoded);
+
+// encode/decode UTF-8
+var encoded = forge.util.encodeUtf8(str);
+var str = forge.util.decodeUtf8(encoded);
+
+// bytes to/from hex
+var bytes = forge.util.hexToBytes(hex);
+var hex = forge.util.bytesToHex(bytes);
+
+// create an empty byte buffer
+var buffer = forge.util.createBuffer();
+// create a byte buffer from raw binary bytes
+var buffer = forge.util.createBuffer(input, 'raw');
+// create a byte buffer from utf8 bytes
+var buffer = forge.util.createBuffer(input, 'utf8');
+
+// get the length of the buffer in bytes
+buffer.length();
+// put bytes into the buffer
+buffer.putBytes(bytes);
+// put a 32-bit integer into the buffer
+buffer.putInt32(10);
+// buffer to hex
+buffer.toHex();
+// get a copy of the bytes in the buffer
+bytes.bytes(/* count */);
+// empty this buffer and get its contents
+bytes.getBytes(/* count */);
+
+// convert a forge buffer into a node.js Buffer
+// make sure you specify the encoding as 'binary'
+var forgeBuffer = forge.util.createBuffer();
+var nodeBuffer = new Buffer(forgeBuffer.getBytes(), 'binary');
+
+// convert a node.js Buffer into a forge buffer
+// make sure you specify the encoding as 'binary'
+var nodeBuffer = new Buffer();
+var forgeBuffer = forge.util.createBuffer(nodeBuffer.toString('binary'));
+
+// parse a URL
+var parsed = forge.util.parseUrl('http://example.com/foo?bar=baz');
+// parsed.scheme, parsed.host, parsed.port, parsed.path, parsed.fullHost
+```
+
+<a name="log" />
+### Logging
+
+Provides logging to a javascript console using various categories and
+levels of verbosity.
+
+__Examples__
+
+```js
+```
+
+<a name="debug" />
+### Debugging
+
+Provides storage of debugging information normally inaccessible in
+closures for viewing/investigation.
+
+__Examples__
+
+```js
+```
+
+<a name="fsp" />
+### Flash Socket Policy Module
+
+Provides an [Apache][] module "mod_fsp" that can serve up a Flash Socket
+Policy. See `mod_fsp/README` for more details. This module makes it easy to
+modify an [Apache][] server to allow cross domain requests to be made to it.
+
+
+Library Details
+---------------
+
+* http://digitalbazaar.com/2010/07/20/javascript-tls-1/
+* http://digitalbazaar.com/2010/07/20/javascript-tls-2/
+
+Contact
+-------
+
+* Code: https://github.com/digitalbazaar/forge
+* Bugs: https://github.com/digitalbazaar/forge/issues
+* Email: support@digitalbazaar.com
+
+Donations welcome:
+
+* Donate: paypal@digitalbazaar.com
+
+[AES]: http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
+[ASN.1]: http://en.wikipedia.org/wiki/ASN.1
+[Apache]: http://httpd.apache.org/
+[CFB]: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
+[CBC]: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
+[CTR]: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
+[3DES]: http://en.wikipedia.org/wiki/Triple_DES
+[DES]: http://en.wikipedia.org/wiki/Data_Encryption_Standard
+[ECB]: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
+[Fortuna]: http://en.wikipedia.org/wiki/Fortuna_(PRNG)
+[GCM]: http://en.wikipedia.org/wiki/GCM_mode
+[HMAC]: http://en.wikipedia.org/wiki/HMAC
+[JavaScript]: http://en.wikipedia.org/wiki/JavaScript
+[MD5]: http://en.wikipedia.org/wiki/MD5
+[OFB]: http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation
+[PKCS#5]: http://en.wikipedia.org/wiki/PKCS
+[PKCS#7]: http://en.wikipedia.org/wiki/Cryptographic_Message_Syntax
+[PKCS#10]: http://en.wikipedia.org/wiki/Certificate_signing_request
+[PKCS#12]: http://en.wikipedia.org/wiki/PKCS_%E2%99%AF12
+[RC2]: http://en.wikipedia.org/wiki/RC2
+[SHA-1]: http://en.wikipedia.org/wiki/SHA-1
+[SHA-256]: http://en.wikipedia.org/wiki/SHA-256
+[SHA-384]: http://en.wikipedia.org/wiki/SHA-384
+[SHA-512]: http://en.wikipedia.org/wiki/SHA-512
+[TLS]: http://en.wikipedia.org/wiki/Transport_Layer_Security
+[X.509]: http://en.wikipedia.org/wiki/X.509
+[node.js]: http://nodejs.org/