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1456 lines
47 KiB
1456 lines
47 KiB
4 weeks ago
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// TODO:
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// * utilize `crypto.create(Private|Public)Key()` and `keyObject.export()`
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// * handle multi-line header values (OpenSSH)?
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// * more thorough validation?
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var crypto = require('crypto');
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var cryptoSign = crypto.sign;
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var cryptoVerify = crypto.verify;
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var createSign = crypto.createSign;
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var createVerify = crypto.createVerify;
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var createDecipheriv = crypto.createDecipheriv;
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var createHash = crypto.createHash;
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var createHmac = crypto.createHmac;
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var supportedOpenSSLCiphers = crypto.getCiphers();
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var utils;
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var Ber = require('asn1').Ber;
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var bcrypt_pbkdf = require('bcrypt-pbkdf').pbkdf;
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var bufferHelpers = require('./buffer-helpers');
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var readUInt32BE = bufferHelpers.readUInt32BE;
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var writeUInt32BE = bufferHelpers.writeUInt32BE;
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var constants = require('./constants');
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var SUPPORTED_CIPHER = constants.ALGORITHMS.SUPPORTED_CIPHER;
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var CIPHER_INFO = constants.CIPHER_INFO;
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var SSH_TO_OPENSSL = constants.SSH_TO_OPENSSL;
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var EDDSA_SUPPORTED = constants.EDDSA_SUPPORTED;
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var SYM_HASH_ALGO = Symbol('Hash Algorithm');
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var SYM_PRIV_PEM = Symbol('Private key PEM');
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var SYM_PUB_PEM = Symbol('Public key PEM');
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var SYM_PUB_SSH = Symbol('Public key SSH');
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var SYM_DECRYPTED = Symbol('Decrypted Key');
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// Create OpenSSL cipher name -> SSH cipher name conversion table
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var CIPHER_INFO_OPENSSL = Object.create(null);
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(function() {
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var keys = Object.keys(CIPHER_INFO);
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for (var i = 0; i < keys.length; ++i) {
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var cipherName = SSH_TO_OPENSSL[keys[i]];
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if (!cipherName || CIPHER_INFO_OPENSSL[cipherName])
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continue;
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CIPHER_INFO_OPENSSL[cipherName] = CIPHER_INFO[keys[i]];
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}
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})();
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var trimStart = (function() {
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if (typeof String.prototype.trimStart === 'function') {
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return function trimStart(str) {
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return str.trimStart();
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};
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}
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return function trimStart(str) {
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var start = 0;
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for (var i = 0; i < str.length; ++i) {
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switch (str.charCodeAt(i)) {
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case 32: // ' '
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case 9: // '\t'
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case 13: // '\r'
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case 10: // '\n'
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case 12: // '\f'
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++start;
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continue;
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}
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break;
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}
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if (start === 0)
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return str;
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return str.slice(start);
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};
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})();
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function makePEM(type, data) {
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data = data.toString('base64');
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return '-----BEGIN ' + type + ' KEY-----\n'
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+ data.replace(/.{64}/g, '$&\n')
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+ (data.length % 64 ? '\n' : '')
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+ '-----END ' + type + ' KEY-----';
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}
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function combineBuffers(buf1, buf2) {
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var result = Buffer.allocUnsafe(buf1.length + buf2.length);
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buf1.copy(result, 0);
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buf2.copy(result, buf1.length);
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return result;
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}
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function skipFields(buf, nfields) {
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var bufLen = buf.length;
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var pos = (buf._pos || 0);
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for (var i = 0; i < nfields; ++i) {
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var left = (bufLen - pos);
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if (pos >= bufLen || left < 4)
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return false;
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var len = readUInt32BE(buf, pos);
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if (left < 4 + len)
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return false;
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pos += 4 + len;
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}
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buf._pos = pos;
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return true;
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}
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function genOpenSSLRSAPub(n, e) {
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var asnWriter = new Ber.Writer();
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asnWriter.startSequence();
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// algorithm
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asnWriter.startSequence();
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asnWriter.writeOID('1.2.840.113549.1.1.1'); // rsaEncryption
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// algorithm parameters (RSA has none)
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asnWriter.writeNull();
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asnWriter.endSequence();
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// subjectPublicKey
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asnWriter.startSequence(Ber.BitString);
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asnWriter.writeByte(0x00);
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asnWriter.startSequence();
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asnWriter.writeBuffer(n, Ber.Integer);
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asnWriter.writeBuffer(e, Ber.Integer);
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asnWriter.endSequence();
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asnWriter.endSequence();
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asnWriter.endSequence();
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return makePEM('PUBLIC', asnWriter.buffer);
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}
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function genOpenSSHRSAPub(n, e) {
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var publicKey = Buffer.allocUnsafe(4 + 7 // "ssh-rsa"
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+ 4 + n.length
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+ 4 + e.length);
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writeUInt32BE(publicKey, 7, 0);
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publicKey.write('ssh-rsa', 4, 7, 'ascii');
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var i = 4 + 7;
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writeUInt32BE(publicKey, e.length, i);
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e.copy(publicKey, i += 4);
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writeUInt32BE(publicKey, n.length, i += e.length);
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n.copy(publicKey, i + 4);
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return publicKey;
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}
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var genOpenSSLRSAPriv = (function() {
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function genRSAASN1Buf(n, e, d, p, q, dmp1, dmq1, iqmp) {
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var asnWriter = new Ber.Writer();
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asnWriter.startSequence();
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asnWriter.writeInt(0x00, Ber.Integer);
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asnWriter.writeBuffer(n, Ber.Integer);
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asnWriter.writeBuffer(e, Ber.Integer);
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asnWriter.writeBuffer(d, Ber.Integer);
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asnWriter.writeBuffer(p, Ber.Integer);
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asnWriter.writeBuffer(q, Ber.Integer);
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asnWriter.writeBuffer(dmp1, Ber.Integer);
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asnWriter.writeBuffer(dmq1, Ber.Integer);
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asnWriter.writeBuffer(iqmp, Ber.Integer);
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asnWriter.endSequence();
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return asnWriter.buffer;
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}
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function bigIntFromBuffer(buf) {
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return BigInt('0x' + buf.toString('hex'));
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}
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function bigIntToBuffer(bn) {
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var hex = bn.toString(16);
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if ((hex.length & 1) !== 0) {
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hex = '0' + hex;
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} else {
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var sigbit = hex.charCodeAt(0);
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// BER/DER integers require leading zero byte to denote a positive value
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// when first byte >= 0x80
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if (sigbit === 56 || (sigbit >= 97 && sigbit <= 102))
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hex = '00' + hex;
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}
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return Buffer.from(hex, 'hex');
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}
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// Feature detect native BigInt availability and use it when possible
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try {
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var code = [
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'return function genOpenSSLRSAPriv(n, e, d, iqmp, p, q) {',
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' var bn_d = bigIntFromBuffer(d);',
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' var dmp1 = bigIntToBuffer(bn_d % (bigIntFromBuffer(p) - 1n));',
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' var dmq1 = bigIntToBuffer(bn_d % (bigIntFromBuffer(q) - 1n));',
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' return makePEM(\'RSA PRIVATE\', '
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+ 'genRSAASN1Buf(n, e, d, p, q, dmp1, dmq1, iqmp));',
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'};'
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].join('\n');
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return new Function(
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'bigIntFromBuffer, bigIntToBuffer, makePEM, genRSAASN1Buf',
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code
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)(bigIntFromBuffer, bigIntToBuffer, makePEM, genRSAASN1Buf);
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} catch (ex) {
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return (function() {
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var BigInteger = require('./jsbn.js');
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return function genOpenSSLRSAPriv(n, e, d, iqmp, p, q) {
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var pbi = new BigInteger(p, 256);
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var qbi = new BigInteger(q, 256);
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var dbi = new BigInteger(d, 256);
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var dmp1bi = dbi.mod(pbi.subtract(BigInteger.ONE));
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var dmq1bi = dbi.mod(qbi.subtract(BigInteger.ONE));
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var dmp1 = Buffer.from(dmp1bi.toByteArray());
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var dmq1 = Buffer.from(dmq1bi.toByteArray());
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return makePEM('RSA PRIVATE',
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genRSAASN1Buf(n, e, d, p, q, dmp1, dmq1, iqmp));
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};
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})();
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}
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})();
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function genOpenSSLDSAPub(p, q, g, y) {
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var asnWriter = new Ber.Writer();
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asnWriter.startSequence();
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// algorithm
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asnWriter.startSequence();
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asnWriter.writeOID('1.2.840.10040.4.1'); // id-dsa
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// algorithm parameters
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asnWriter.startSequence();
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asnWriter.writeBuffer(p, Ber.Integer);
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asnWriter.writeBuffer(q, Ber.Integer);
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asnWriter.writeBuffer(g, Ber.Integer);
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asnWriter.endSequence();
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asnWriter.endSequence();
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// subjectPublicKey
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asnWriter.startSequence(Ber.BitString);
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asnWriter.writeByte(0x00);
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asnWriter.writeBuffer(y, Ber.Integer);
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asnWriter.endSequence();
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asnWriter.endSequence();
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return makePEM('PUBLIC', asnWriter.buffer);
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}
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function genOpenSSHDSAPub(p, q, g, y) {
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var publicKey = Buffer.allocUnsafe(4 + 7 // ssh-dss
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+ 4 + p.length
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+ 4 + q.length
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+ 4 + g.length
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+ 4 + y.length);
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writeUInt32BE(publicKey, 7, 0);
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publicKey.write('ssh-dss', 4, 7, 'ascii');
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var i = 4 + 7;
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writeUInt32BE(publicKey, p.length, i);
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p.copy(publicKey, i += 4);
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writeUInt32BE(publicKey, q.length, i += p.length);
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q.copy(publicKey, i += 4);
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writeUInt32BE(publicKey, g.length, i += q.length);
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g.copy(publicKey, i += 4);
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writeUInt32BE(publicKey, y.length, i += g.length);
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y.copy(publicKey, i + 4);
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return publicKey;
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}
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function genOpenSSLDSAPriv(p, q, g, y, x) {
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var asnWriter = new Ber.Writer();
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asnWriter.startSequence();
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asnWriter.writeInt(0x00, Ber.Integer);
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asnWriter.writeBuffer(p, Ber.Integer);
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asnWriter.writeBuffer(q, Ber.Integer);
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asnWriter.writeBuffer(g, Ber.Integer);
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asnWriter.writeBuffer(y, Ber.Integer);
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asnWriter.writeBuffer(x, Ber.Integer);
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asnWriter.endSequence();
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return makePEM('DSA PRIVATE', asnWriter.buffer);
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}
|
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|
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function genOpenSSLEdPub(pub) {
|
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var asnWriter = new Ber.Writer();
|
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|
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asnWriter.startSequence();
|
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|
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// algorithm
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asnWriter.startSequence();
|
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asnWriter.writeOID('1.3.101.112'); // id-Ed25519
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asnWriter.endSequence();
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|
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|
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|
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// PublicKey
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asnWriter.startSequence(Ber.BitString);
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asnWriter.writeByte(0x00);
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|
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// XXX: hack to write a raw buffer without a tag -- yuck
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asnWriter._ensure(pub.length);
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pub.copy(asnWriter._buf, asnWriter._offset, 0, pub.length);
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|
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asnWriter._offset += pub.length;
|
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|
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asnWriter.endSequence();
|
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|
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asnWriter.endSequence();
|
||
|
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return makePEM('PUBLIC', asnWriter.buffer);
|
||
|
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}
|
||
|
|
|
||
|
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function genOpenSSHEdPub(pub) {
|
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|
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var publicKey = Buffer.allocUnsafe(4 + 11 // ssh-ed25519
|
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|
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+ 4 + pub.length);
|
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|
|
|
||
|
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writeUInt32BE(publicKey, 11, 0);
|
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|
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publicKey.write('ssh-ed25519', 4, 11, 'ascii');
|
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|
|
|
||
|
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writeUInt32BE(publicKey, pub.length, 15);
|
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|
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pub.copy(publicKey, 19);
|
||
|
|
|
||
|
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return publicKey;
|
||
|
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}
|
||
|
|
|
||
|
|
function genOpenSSLEdPriv(priv) {
|
||
|
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var asnWriter = new Ber.Writer();
|
||
|
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asnWriter.startSequence();
|
||
|
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// version
|
||
|
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asnWriter.writeInt(0x00, Ber.Integer);
|
||
|
|
|
||
|
|
// algorithm
|
||
|
|
asnWriter.startSequence();
|
||
|
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asnWriter.writeOID('1.3.101.112'); // id-Ed25519
|
||
|
|
asnWriter.endSequence();
|
||
|
|
|
||
|
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// PrivateKey
|
||
|
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asnWriter.startSequence(Ber.OctetString);
|
||
|
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asnWriter.writeBuffer(priv, Ber.OctetString);
|
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|
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asnWriter.endSequence();
|
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|
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asnWriter.endSequence();
|
||
|
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return makePEM('PRIVATE', asnWriter.buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
function genOpenSSLECDSAPub(oid, Q) {
|
||
|
|
var asnWriter = new Ber.Writer();
|
||
|
|
asnWriter.startSequence();
|
||
|
|
// algorithm
|
||
|
|
asnWriter.startSequence();
|
||
|
|
asnWriter.writeOID('1.2.840.10045.2.1'); // id-ecPublicKey
|
||
|
|
// algorithm parameters (namedCurve)
|
||
|
|
asnWriter.writeOID(oid);
|
||
|
|
asnWriter.endSequence();
|
||
|
|
|
||
|
|
// subjectPublicKey
|
||
|
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asnWriter.startSequence(Ber.BitString);
|
||
|
|
asnWriter.writeByte(0x00);
|
||
|
|
// XXX: hack to write a raw buffer without a tag -- yuck
|
||
|
|
asnWriter._ensure(Q.length);
|
||
|
|
Q.copy(asnWriter._buf, asnWriter._offset, 0, Q.length);
|
||
|
|
asnWriter._offset += Q.length;
|
||
|
|
// end hack
|
||
|
|
asnWriter.endSequence();
|
||
|
|
asnWriter.endSequence();
|
||
|
|
return makePEM('PUBLIC', asnWriter.buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
function genOpenSSHECDSAPub(oid, Q) {
|
||
|
|
var curveName;
|
||
|
|
switch (oid) {
|
||
|
|
case '1.2.840.10045.3.1.7':
|
||
|
|
// prime256v1/secp256r1
|
||
|
|
curveName = 'nistp256';
|
||
|
|
break;
|
||
|
|
case '1.3.132.0.34':
|
||
|
|
// secp384r1
|
||
|
|
curveName = 'nistp384';
|
||
|
|
break;
|
||
|
|
case '1.3.132.0.35':
|
||
|
|
// secp521r1
|
||
|
|
curveName = 'nistp521';
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var publicKey = Buffer.allocUnsafe(4 + 19 // ecdsa-sha2-<curve name>
|
||
|
|
+ 4 + 8 // <curve name>
|
||
|
|
+ 4 + Q.length);
|
||
|
|
|
||
|
|
writeUInt32BE(publicKey, 19, 0);
|
||
|
|
publicKey.write('ecdsa-sha2-' + curveName, 4, 19, 'ascii');
|
||
|
|
|
||
|
|
writeUInt32BE(publicKey, 8, 23);
|
||
|
|
publicKey.write(curveName, 27, 8, 'ascii');
|
||
|
|
|
||
|
|
writeUInt32BE(publicKey, Q.length, 35);
|
||
|
|
Q.copy(publicKey, 39);
|
||
|
|
|
||
|
|
return publicKey;
|
||
|
|
}
|
||
|
|
|
||
|
|
function genOpenSSLECDSAPriv(oid, pub, priv) {
|
||
|
|
var asnWriter = new Ber.Writer();
|
||
|
|
asnWriter.startSequence();
|
||
|
|
// version
|
||
|
|
asnWriter.writeInt(0x01, Ber.Integer);
|
||
|
|
// privateKey
|
||
|
|
asnWriter.writeBuffer(priv, Ber.OctetString);
|
||
|
|
// parameters (optional)
|
||
|
|
asnWriter.startSequence(0xA0);
|
||
|
|
asnWriter.writeOID(oid);
|
||
|
|
asnWriter.endSequence();
|
||
|
|
// publicKey (optional)
|
||
|
|
asnWriter.startSequence(0xA1);
|
||
|
|
asnWriter.startSequence(Ber.BitString);
|
||
|
|
asnWriter.writeByte(0x00);
|
||
|
|
// XXX: hack to write a raw buffer without a tag -- yuck
|
||
|
|
asnWriter._ensure(pub.length);
|
||
|
|
pub.copy(asnWriter._buf, asnWriter._offset, 0, pub.length);
|
||
|
|
asnWriter._offset += pub.length;
|
||
|
|
// end hack
|
||
|
|
asnWriter.endSequence();
|
||
|
|
asnWriter.endSequence();
|
||
|
|
asnWriter.endSequence();
|
||
|
|
return makePEM('EC PRIVATE', asnWriter.buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
function genOpenSSLECDSAPubFromPriv(curveName, priv) {
|
||
|
|
var tempECDH = crypto.createECDH(curveName);
|
||
|
|
tempECDH.setPrivateKey(priv);
|
||
|
|
return tempECDH.getPublicKey();
|
||
|
|
}
|
||
|
|
|
||
|
|
var baseKeySign = (function() {
|
||
|
|
if (typeof cryptoSign === 'function') {
|
||
|
|
return function sign(data) {
|
||
|
|
var pem = this[SYM_PRIV_PEM];
|
||
|
|
if (pem === null)
|
||
|
|
return new Error('No private key available');
|
||
|
|
try {
|
||
|
|
return cryptoSign(this[SYM_HASH_ALGO], data, pem);
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
function trySign(signature, privKey) {
|
||
|
|
try {
|
||
|
|
return signature.sign(privKey);
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return function sign(data) {
|
||
|
|
var pem = this[SYM_PRIV_PEM];
|
||
|
|
if (pem === null)
|
||
|
|
return new Error('No private key available');
|
||
|
|
var signature = createSign(this[SYM_HASH_ALGO]);
|
||
|
|
signature.update(data);
|
||
|
|
return trySign(signature, pem);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
|
||
|
|
var baseKeyVerify = (function() {
|
||
|
|
if (typeof cryptoVerify === 'function') {
|
||
|
|
return function verify(data, signature) {
|
||
|
|
var pem = this[SYM_PUB_PEM];
|
||
|
|
if (pem === null)
|
||
|
|
return new Error('No public key available');
|
||
|
|
try {
|
||
|
|
return cryptoVerify(this[SYM_HASH_ALGO], data, pem, signature);
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
function tryVerify(verifier, pubKey, signature) {
|
||
|
|
try {
|
||
|
|
return verifier.verify(pubKey, signature);
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return function verify(data, signature) {
|
||
|
|
var pem = this[SYM_PUB_PEM];
|
||
|
|
if (pem === null)
|
||
|
|
return new Error('No public key available');
|
||
|
|
var verifier = createVerify(this[SYM_HASH_ALGO]);
|
||
|
|
verifier.update(data);
|
||
|
|
return tryVerify(verifier, pem, signature);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
|
||
|
|
var BaseKey = {
|
||
|
|
sign: baseKeySign,
|
||
|
|
verify: baseKeyVerify,
|
||
|
|
getPrivatePEM: function getPrivatePEM() {
|
||
|
|
return this[SYM_PRIV_PEM];
|
||
|
|
},
|
||
|
|
getPublicPEM: function getPublicPEM() {
|
||
|
|
return this[SYM_PUB_PEM];
|
||
|
|
},
|
||
|
|
getPublicSSH: function getPublicSSH() {
|
||
|
|
return this[SYM_PUB_SSH];
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function OpenSSH_Private(type, comment, privPEM, pubPEM, pubSSH, algo, decrypted) {
|
||
|
|
this.type = type;
|
||
|
|
this.comment = comment;
|
||
|
|
this[SYM_PRIV_PEM] = privPEM;
|
||
|
|
this[SYM_PUB_PEM] = pubPEM;
|
||
|
|
this[SYM_PUB_SSH] = pubSSH;
|
||
|
|
this[SYM_HASH_ALGO] = algo;
|
||
|
|
this[SYM_DECRYPTED] = decrypted;
|
||
|
|
}
|
||
|
|
OpenSSH_Private.prototype = BaseKey;
|
||
|
|
(function() {
|
||
|
|
var regexp = /^-----BEGIN OPENSSH PRIVATE KEY-----(?:\r\n|\n)([\s\S]+)(?:\r\n|\n)-----END OPENSSH PRIVATE KEY-----$/;
|
||
|
|
OpenSSH_Private.parse = function(str, passphrase) {
|
||
|
|
var m = regexp.exec(str);
|
||
|
|
if (m === null)
|
||
|
|
return null;
|
||
|
|
var ret;
|
||
|
|
var data = Buffer.from(m[1], 'base64');
|
||
|
|
if (data.length < 31) // magic (+ magic null term.) + minimum field lengths
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var magic = data.toString('ascii', 0, 15);
|
||
|
|
if (magic !== 'openssh-key-v1\0')
|
||
|
|
return new Error('Unsupported OpenSSH key magic: ' + magic);
|
||
|
|
|
||
|
|
// avoid cyclic require by requiring on first use
|
||
|
|
if (!utils)
|
||
|
|
utils = require('./utils');
|
||
|
|
|
||
|
|
var cipherName = utils.readString(data, 15, 'ascii');
|
||
|
|
if (cipherName === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
if (cipherName !== 'none' && SUPPORTED_CIPHER.indexOf(cipherName) === -1)
|
||
|
|
return new Error('Unsupported cipher for OpenSSH key: ' + cipherName);
|
||
|
|
|
||
|
|
var kdfName = utils.readString(data, data._pos, 'ascii');
|
||
|
|
if (kdfName === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
if (kdfName !== 'none') {
|
||
|
|
if (cipherName === 'none')
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
if (kdfName !== 'bcrypt')
|
||
|
|
return new Error('Unsupported kdf name for OpenSSH key: ' + kdfName);
|
||
|
|
if (!passphrase) {
|
||
|
|
return new Error(
|
||
|
|
'Encrypted private OpenSSH key detected, but no passphrase given'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
} else if (cipherName !== 'none') {
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
}
|
||
|
|
|
||
|
|
var encInfo;
|
||
|
|
var cipherKey;
|
||
|
|
var cipherIV;
|
||
|
|
if (cipherName !== 'none')
|
||
|
|
encInfo = CIPHER_INFO[cipherName];
|
||
|
|
var kdfOptions = utils.readString(data, data._pos);
|
||
|
|
if (kdfOptions === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
if (kdfOptions.length) {
|
||
|
|
switch (kdfName) {
|
||
|
|
case 'none':
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
case 'bcrypt':
|
||
|
|
/*
|
||
|
|
string salt
|
||
|
|
uint32 rounds
|
||
|
|
*/
|
||
|
|
var salt = utils.readString(kdfOptions, 0);
|
||
|
|
if (salt === false || kdfOptions._pos + 4 > kdfOptions.length)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var rounds = readUInt32BE(kdfOptions, kdfOptions._pos);
|
||
|
|
var gen = Buffer.allocUnsafe(encInfo.keyLen + encInfo.ivLen);
|
||
|
|
var r = bcrypt_pbkdf(passphrase,
|
||
|
|
passphrase.length,
|
||
|
|
salt,
|
||
|
|
salt.length,
|
||
|
|
gen,
|
||
|
|
gen.length,
|
||
|
|
rounds);
|
||
|
|
if (r !== 0)
|
||
|
|
return new Error('Failed to generate information to decrypt key');
|
||
|
|
cipherKey = gen.slice(0, encInfo.keyLen);
|
||
|
|
cipherIV = gen.slice(encInfo.keyLen);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} else if (kdfName !== 'none') {
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
}
|
||
|
|
|
||
|
|
var keyCount = utils.readInt(data, data._pos);
|
||
|
|
if (keyCount === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
data._pos += 4;
|
||
|
|
|
||
|
|
if (keyCount > 0) {
|
||
|
|
// TODO: place sensible limit on max `keyCount`
|
||
|
|
|
||
|
|
// Read public keys first
|
||
|
|
for (var i = 0; i < keyCount; ++i) {
|
||
|
|
var pubData = utils.readString(data, data._pos);
|
||
|
|
if (pubData === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var type = utils.readString(pubData, 0, 'ascii');
|
||
|
|
if (type === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
}
|
||
|
|
|
||
|
|
var privBlob = utils.readString(data, data._pos);
|
||
|
|
if (privBlob === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
if (cipherKey !== undefined) {
|
||
|
|
// encrypted private key(s)
|
||
|
|
if (privBlob.length < encInfo.blockLen
|
||
|
|
|| (privBlob.length % encInfo.blockLen) !== 0) {
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
var options = { authTagLength: encInfo.authLen };
|
||
|
|
var decipher = createDecipheriv(SSH_TO_OPENSSL[cipherName],
|
||
|
|
cipherKey,
|
||
|
|
cipherIV,
|
||
|
|
options);
|
||
|
|
if (encInfo.authLen > 0) {
|
||
|
|
if (data.length - data._pos < encInfo.authLen)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
decipher.setAuthTag(
|
||
|
|
data.slice(data._pos, data._pos += encInfo.authLen)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
privBlob = combineBuffers(decipher.update(privBlob),
|
||
|
|
decipher.final());
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Nothing should we follow the private key(s), except a possible
|
||
|
|
// authentication tag for relevant ciphers
|
||
|
|
if (data._pos !== data.length)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
ret = parseOpenSSHPrivKeys(privBlob, keyCount, cipherKey !== undefined);
|
||
|
|
} else {
|
||
|
|
ret = [];
|
||
|
|
}
|
||
|
|
return ret;
|
||
|
|
};
|
||
|
|
|
||
|
|
function parseOpenSSHPrivKeys(data, nkeys, decrypted) {
|
||
|
|
var keys = [];
|
||
|
|
/*
|
||
|
|
uint32 checkint
|
||
|
|
uint32 checkint
|
||
|
|
string privatekey1
|
||
|
|
string comment1
|
||
|
|
string privatekey2
|
||
|
|
string comment2
|
||
|
|
...
|
||
|
|
string privatekeyN
|
||
|
|
string commentN
|
||
|
|
char 1
|
||
|
|
char 2
|
||
|
|
char 3
|
||
|
|
...
|
||
|
|
char padlen % 255
|
||
|
|
*/
|
||
|
|
if (data.length < 8)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var check1 = readUInt32BE(data, 0);
|
||
|
|
var check2 = readUInt32BE(data, 4);
|
||
|
|
if (check1 !== check2) {
|
||
|
|
if (decrypted)
|
||
|
|
return new Error('OpenSSH key integrity check failed -- bad passphrase?');
|
||
|
|
return new Error('OpenSSH key integrity check failed');
|
||
|
|
}
|
||
|
|
data._pos = 8;
|
||
|
|
var i;
|
||
|
|
var oid;
|
||
|
|
for (i = 0; i < nkeys; ++i) {
|
||
|
|
var algo = undefined;
|
||
|
|
var privPEM = undefined;
|
||
|
|
var pubPEM = undefined;
|
||
|
|
var pubSSH = undefined;
|
||
|
|
// The OpenSSH documentation for the key format actually lies, the entirety
|
||
|
|
// of the private key content is not contained with a string field, it's
|
||
|
|
// actually the literal contents of the private key, so to be able to find
|
||
|
|
// the end of the key data you need to know the layout/format of each key
|
||
|
|
// type ...
|
||
|
|
var type = utils.readString(data, data._pos, 'ascii');
|
||
|
|
if (type === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
switch (type) {
|
||
|
|
case 'ssh-rsa':
|
||
|
|
/*
|
||
|
|
string n -- public
|
||
|
|
string e -- public
|
||
|
|
string d -- private
|
||
|
|
string iqmp -- private
|
||
|
|
string p -- private
|
||
|
|
string q -- private
|
||
|
|
*/
|
||
|
|
var n = utils.readString(data, data._pos);
|
||
|
|
if (n === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var e = utils.readString(data, data._pos);
|
||
|
|
if (e === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var d = utils.readString(data, data._pos);
|
||
|
|
if (d === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var iqmp = utils.readString(data, data._pos);
|
||
|
|
if (iqmp === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var p = utils.readString(data, data._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var q = utils.readString(data, data._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
pubPEM = genOpenSSLRSAPub(n, e);
|
||
|
|
pubSSH = genOpenSSHRSAPub(n, e);
|
||
|
|
privPEM = genOpenSSLRSAPriv(n, e, d, iqmp, p, q);
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'ssh-dss':
|
||
|
|
/*
|
||
|
|
string p -- public
|
||
|
|
string q -- public
|
||
|
|
string g -- public
|
||
|
|
string y -- public
|
||
|
|
string x -- private
|
||
|
|
*/
|
||
|
|
var p = utils.readString(data, data._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var q = utils.readString(data, data._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var g = utils.readString(data, data._pos);
|
||
|
|
if (g === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var y = utils.readString(data, data._pos);
|
||
|
|
if (y === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var x = utils.readString(data, data._pos);
|
||
|
|
if (x === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
pubPEM = genOpenSSLDSAPub(p, q, g, y);
|
||
|
|
pubSSH = genOpenSSHDSAPub(p, q, g, y);
|
||
|
|
privPEM = genOpenSSLDSAPriv(p, q, g, y, x);
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'ssh-ed25519':
|
||
|
|
if (!EDDSA_SUPPORTED)
|
||
|
|
return new Error('Unsupported OpenSSH private key type: ' + type);
|
||
|
|
/*
|
||
|
|
* string public key
|
||
|
|
* string private key + public key
|
||
|
|
*/
|
||
|
|
var edpub = utils.readString(data, data._pos);
|
||
|
|
if (edpub === false || edpub.length !== 32)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var edpriv = utils.readString(data, data._pos);
|
||
|
|
if (edpriv === false || edpriv.length !== 64)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
pubPEM = genOpenSSLEdPub(edpub);
|
||
|
|
pubSSH = genOpenSSHEdPub(edpub);
|
||
|
|
privPEM = genOpenSSLEdPriv(edpriv.slice(0, 32));
|
||
|
|
algo = null;
|
||
|
|
break;
|
||
|
|
case 'ecdsa-sha2-nistp256':
|
||
|
|
algo = 'sha256';
|
||
|
|
oid = '1.2.840.10045.3.1.7';
|
||
|
|
case 'ecdsa-sha2-nistp384':
|
||
|
|
if (algo === undefined) {
|
||
|
|
algo = 'sha384';
|
||
|
|
oid = '1.3.132.0.34';
|
||
|
|
}
|
||
|
|
case 'ecdsa-sha2-nistp521':
|
||
|
|
if (algo === undefined) {
|
||
|
|
algo = 'sha512';
|
||
|
|
oid = '1.3.132.0.35';
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
string curve name
|
||
|
|
string Q -- public
|
||
|
|
string d -- private
|
||
|
|
*/
|
||
|
|
// TODO: validate curve name against type
|
||
|
|
if (!skipFields(data, 1)) // Skip curve name
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var ecpub = utils.readString(data, data._pos);
|
||
|
|
if (ecpub === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
var ecpriv = utils.readString(data, data._pos);
|
||
|
|
if (ecpriv === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
pubPEM = genOpenSSLECDSAPub(oid, ecpub);
|
||
|
|
pubSSH = genOpenSSHECDSAPub(oid, ecpub);
|
||
|
|
privPEM = genOpenSSLECDSAPriv(oid, ecpub, ecpriv);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return new Error('Unsupported OpenSSH private key type: ' + type);
|
||
|
|
}
|
||
|
|
|
||
|
|
var privComment = utils.readString(data, data._pos, 'utf8');
|
||
|
|
if (privComment === false)
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
|
||
|
|
keys.push(
|
||
|
|
new OpenSSH_Private(type, privComment, privPEM, pubPEM, pubSSH, algo,
|
||
|
|
decrypted)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var cnt = 0;
|
||
|
|
for (i = data._pos; i < data.length; ++i) {
|
||
|
|
if (data[i] !== (++cnt % 255))
|
||
|
|
return new Error('Malformed OpenSSH private key');
|
||
|
|
}
|
||
|
|
|
||
|
|
return keys;
|
||
|
|
}
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function OpenSSH_Old_Private(type, comment, privPEM, pubPEM, pubSSH, algo, decrypted) {
|
||
|
|
this.type = type;
|
||
|
|
this.comment = comment;
|
||
|
|
this[SYM_PRIV_PEM] = privPEM;
|
||
|
|
this[SYM_PUB_PEM] = pubPEM;
|
||
|
|
this[SYM_PUB_SSH] = pubSSH;
|
||
|
|
this[SYM_HASH_ALGO] = algo;
|
||
|
|
this[SYM_DECRYPTED] = decrypted;
|
||
|
|
}
|
||
|
|
OpenSSH_Old_Private.prototype = BaseKey;
|
||
|
|
(function() {
|
||
|
|
var regexp = /^-----BEGIN (RSA|DSA|EC) PRIVATE KEY-----(?:\r\n|\n)((?:[^:]+:\s*[\S].*(?:\r\n|\n))*)([\s\S]+)(?:\r\n|\n)-----END (RSA|DSA|EC) PRIVATE KEY-----$/;
|
||
|
|
OpenSSH_Old_Private.parse = function(str, passphrase) {
|
||
|
|
var m = regexp.exec(str);
|
||
|
|
if (m === null)
|
||
|
|
return null;
|
||
|
|
var privBlob = Buffer.from(m[3], 'base64');
|
||
|
|
var headers = m[2];
|
||
|
|
var decrypted = false;
|
||
|
|
if (headers !== undefined) {
|
||
|
|
// encrypted key
|
||
|
|
headers = headers.split(/\r\n|\n/g);
|
||
|
|
for (var i = 0; i < headers.length; ++i) {
|
||
|
|
var header = headers[i];
|
||
|
|
var sepIdx = header.indexOf(':');
|
||
|
|
if (header.slice(0, sepIdx) === 'DEK-Info') {
|
||
|
|
var val = header.slice(sepIdx + 2);
|
||
|
|
sepIdx = val.indexOf(',');
|
||
|
|
if (sepIdx === -1)
|
||
|
|
continue;
|
||
|
|
var cipherName = val.slice(0, sepIdx).toLowerCase();
|
||
|
|
if (supportedOpenSSLCiphers.indexOf(cipherName) === -1) {
|
||
|
|
return new Error(
|
||
|
|
'Cipher ('
|
||
|
|
+ cipherName
|
||
|
|
+ ') not supported for encrypted OpenSSH private key'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var encInfo = CIPHER_INFO_OPENSSL[cipherName];
|
||
|
|
if (!encInfo) {
|
||
|
|
return new Error(
|
||
|
|
'Cipher ('
|
||
|
|
+ cipherName
|
||
|
|
+ ') not supported for encrypted OpenSSH private key'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var cipherIV = Buffer.from(val.slice(sepIdx + 1), 'hex');
|
||
|
|
if (cipherIV.length !== encInfo.ivLen)
|
||
|
|
return new Error('Malformed encrypted OpenSSH private key');
|
||
|
|
if (!passphrase) {
|
||
|
|
return new Error(
|
||
|
|
'Encrypted OpenSSH private key detected, but no passphrase given'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var cipherKey = createHash('md5')
|
||
|
|
.update(passphrase)
|
||
|
|
.update(cipherIV.slice(0, 8))
|
||
|
|
.digest();
|
||
|
|
while (cipherKey.length < encInfo.keyLen) {
|
||
|
|
cipherKey = combineBuffers(
|
||
|
|
cipherKey,
|
||
|
|
(createHash('md5')
|
||
|
|
.update(cipherKey)
|
||
|
|
.update(passphrase)
|
||
|
|
.update(cipherIV)
|
||
|
|
.digest()).slice(0, 8)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
if (cipherKey.length > encInfo.keyLen)
|
||
|
|
cipherKey = cipherKey.slice(0, encInfo.keyLen);
|
||
|
|
try {
|
||
|
|
var decipher = createDecipheriv(cipherName, cipherKey, cipherIV);
|
||
|
|
decipher.setAutoPadding(false);
|
||
|
|
privBlob = combineBuffers(decipher.update(privBlob),
|
||
|
|
decipher.final());
|
||
|
|
decrypted = true;
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var type;
|
||
|
|
var privPEM;
|
||
|
|
var pubPEM;
|
||
|
|
var pubSSH;
|
||
|
|
var algo;
|
||
|
|
var reader;
|
||
|
|
var errMsg = 'Malformed OpenSSH private key';
|
||
|
|
if (decrypted)
|
||
|
|
errMsg += '. Bad passphrase?';
|
||
|
|
switch (m[1]) {
|
||
|
|
case 'RSA':
|
||
|
|
type = 'ssh-rsa';
|
||
|
|
privPEM = makePEM('RSA PRIVATE', privBlob);
|
||
|
|
try {
|
||
|
|
reader = new Ber.Reader(privBlob);
|
||
|
|
reader.readSequence();
|
||
|
|
reader.readInt(); // skip version
|
||
|
|
var n = reader.readString(Ber.Integer, true);
|
||
|
|
if (n === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
var e = reader.readString(Ber.Integer, true);
|
||
|
|
if (e === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
pubPEM = genOpenSSLRSAPub(n, e);
|
||
|
|
pubSSH = genOpenSSHRSAPub(n, e);
|
||
|
|
} catch (ex) {
|
||
|
|
return new Error(errMsg);
|
||
|
|
}
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'DSA':
|
||
|
|
type = 'ssh-dss';
|
||
|
|
privPEM = makePEM('DSA PRIVATE', privBlob);
|
||
|
|
try {
|
||
|
|
reader = new Ber.Reader(privBlob);
|
||
|
|
reader.readSequence();
|
||
|
|
reader.readInt(); // skip version
|
||
|
|
var p = reader.readString(Ber.Integer, true);
|
||
|
|
if (p === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
var q = reader.readString(Ber.Integer, true);
|
||
|
|
if (q === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
var g = reader.readString(Ber.Integer, true);
|
||
|
|
if (g === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
var y = reader.readString(Ber.Integer, true);
|
||
|
|
if (y === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
pubPEM = genOpenSSLDSAPub(p, q, g, y);
|
||
|
|
pubSSH = genOpenSSHDSAPub(p, q, g, y);
|
||
|
|
} catch (ex) {
|
||
|
|
return new Error(errMsg);
|
||
|
|
}
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'EC':
|
||
|
|
var ecSSLName;
|
||
|
|
var ecPriv;
|
||
|
|
try {
|
||
|
|
reader = new Ber.Reader(privBlob);
|
||
|
|
reader.readSequence();
|
||
|
|
reader.readInt(); // skip version
|
||
|
|
ecPriv = reader.readString(Ber.OctetString, true);
|
||
|
|
reader.readByte(); // Skip "complex" context type byte
|
||
|
|
var offset = reader.readLength(); // Skip context length
|
||
|
|
if (offset !== null) {
|
||
|
|
reader._offset = offset;
|
||
|
|
var oid = reader.readOID();
|
||
|
|
if (oid === null)
|
||
|
|
return new Error(errMsg);
|
||
|
|
switch (oid) {
|
||
|
|
case '1.2.840.10045.3.1.7':
|
||
|
|
// prime256v1/secp256r1
|
||
|
|
ecSSLName = 'prime256v1';
|
||
|
|
type = 'ecdsa-sha2-nistp256';
|
||
|
|
algo = 'sha256';
|
||
|
|
break;
|
||
|
|
case '1.3.132.0.34':
|
||
|
|
// secp384r1
|
||
|
|
ecSSLName = 'secp384r1';
|
||
|
|
type = 'ecdsa-sha2-nistp384';
|
||
|
|
algo = 'sha384';
|
||
|
|
break;
|
||
|
|
case '1.3.132.0.35':
|
||
|
|
// secp521r1
|
||
|
|
ecSSLName = 'secp521r1';
|
||
|
|
type = 'ecdsa-sha2-nistp521';
|
||
|
|
algo = 'sha512';
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return new Error('Unsupported private key EC OID: ' + oid);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return new Error(errMsg);
|
||
|
|
}
|
||
|
|
} catch (ex) {
|
||
|
|
return new Error(errMsg);
|
||
|
|
}
|
||
|
|
privPEM = makePEM('EC PRIVATE', privBlob);
|
||
|
|
var pubBlob = genOpenSSLECDSAPubFromPriv(ecSSLName, ecPriv);
|
||
|
|
pubPEM = genOpenSSLECDSAPub(oid, pubBlob);
|
||
|
|
pubSSH = genOpenSSHECDSAPub(oid, pubBlob);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return new OpenSSH_Old_Private(type, '', privPEM, pubPEM, pubSSH, algo,
|
||
|
|
decrypted);
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function PPK_Private(type, comment, privPEM, pubPEM, pubSSH, algo, decrypted) {
|
||
|
|
this.type = type;
|
||
|
|
this.comment = comment;
|
||
|
|
this[SYM_PRIV_PEM] = privPEM;
|
||
|
|
this[SYM_PUB_PEM] = pubPEM;
|
||
|
|
this[SYM_PUB_SSH] = pubSSH;
|
||
|
|
this[SYM_HASH_ALGO] = algo;
|
||
|
|
this[SYM_DECRYPTED] = decrypted;
|
||
|
|
}
|
||
|
|
PPK_Private.prototype = BaseKey;
|
||
|
|
(function() {
|
||
|
|
var EMPTY_PASSPHRASE = Buffer.alloc(0);
|
||
|
|
var PPK_IV = Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||
|
|
var PPK_PP1 = Buffer.from([0, 0, 0, 0]);
|
||
|
|
var PPK_PP2 = Buffer.from([0, 0, 0, 1]);
|
||
|
|
var regexp = /^PuTTY-User-Key-File-2: (ssh-(?:rsa|dss))\r?\nEncryption: (aes256-cbc|none)\r?\nComment: ([^\r\n]*)\r?\nPublic-Lines: \d+\r?\n([\s\S]+?)\r?\nPrivate-Lines: \d+\r?\n([\s\S]+?)\r?\nPrivate-MAC: ([^\r\n]+)/;
|
||
|
|
PPK_Private.parse = function(str, passphrase) {
|
||
|
|
var m = regexp.exec(str);
|
||
|
|
if (m === null)
|
||
|
|
return null;
|
||
|
|
// m[1] = key type
|
||
|
|
// m[2] = encryption type
|
||
|
|
// m[3] = comment
|
||
|
|
// m[4] = base64-encoded public key data:
|
||
|
|
// for "ssh-rsa":
|
||
|
|
// string "ssh-rsa"
|
||
|
|
// mpint e (public exponent)
|
||
|
|
// mpint n (modulus)
|
||
|
|
// for "ssh-dss":
|
||
|
|
// string "ssh-dss"
|
||
|
|
// mpint p (modulus)
|
||
|
|
// mpint q (prime)
|
||
|
|
// mpint g (base number)
|
||
|
|
// mpint y (public key parameter: g^x mod p)
|
||
|
|
// m[5] = base64-encoded private key data:
|
||
|
|
// for "ssh-rsa":
|
||
|
|
// mpint d (private exponent)
|
||
|
|
// mpint p (prime 1)
|
||
|
|
// mpint q (prime 2)
|
||
|
|
// mpint iqmp ([inverse of q] mod p)
|
||
|
|
// for "ssh-dss":
|
||
|
|
// mpint x (private key parameter)
|
||
|
|
// m[6] = SHA1 HMAC over:
|
||
|
|
// string name of algorithm ("ssh-dss", "ssh-rsa")
|
||
|
|
// string encryption type
|
||
|
|
// string comment
|
||
|
|
// string public key data
|
||
|
|
// string private-plaintext (including the final padding)
|
||
|
|
var cipherName = m[2];
|
||
|
|
var encrypted = (cipherName !== 'none');
|
||
|
|
if (encrypted && !passphrase) {
|
||
|
|
return new Error(
|
||
|
|
'Encrypted PPK private key detected, but no passphrase given'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
var privBlob = Buffer.from(m[5], 'base64');
|
||
|
|
|
||
|
|
if (encrypted) {
|
||
|
|
var encInfo = CIPHER_INFO[cipherName];
|
||
|
|
var cipherKey = combineBuffers(
|
||
|
|
createHash('sha1').update(PPK_PP1).update(passphrase).digest(),
|
||
|
|
createHash('sha1').update(PPK_PP2).update(passphrase).digest()
|
||
|
|
);
|
||
|
|
if (cipherKey.length > encInfo.keyLen)
|
||
|
|
cipherKey = cipherKey.slice(0, encInfo.keyLen);
|
||
|
|
try {
|
||
|
|
var decipher = createDecipheriv(SSH_TO_OPENSSL[cipherName],
|
||
|
|
cipherKey,
|
||
|
|
PPK_IV);
|
||
|
|
decipher.setAutoPadding(false);
|
||
|
|
privBlob = combineBuffers(decipher.update(privBlob),
|
||
|
|
decipher.final());
|
||
|
|
decrypted = true;
|
||
|
|
} catch (ex) {
|
||
|
|
return ex;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var type = m[1];
|
||
|
|
var comment = m[3];
|
||
|
|
var pubBlob = Buffer.from(m[4], 'base64');
|
||
|
|
|
||
|
|
var mac = m[6];
|
||
|
|
var typeLen = type.length;
|
||
|
|
var cipherNameLen = cipherName.length;
|
||
|
|
var commentLen = Buffer.byteLength(comment);
|
||
|
|
var pubLen = pubBlob.length;
|
||
|
|
var privLen = privBlob.length;
|
||
|
|
var macData = Buffer.allocUnsafe(4 + typeLen
|
||
|
|
+ 4 + cipherNameLen
|
||
|
|
+ 4 + commentLen
|
||
|
|
+ 4 + pubLen
|
||
|
|
+ 4 + privLen);
|
||
|
|
var p = 0;
|
||
|
|
|
||
|
|
writeUInt32BE(macData, typeLen, p);
|
||
|
|
macData.write(type, p += 4, typeLen, 'ascii');
|
||
|
|
writeUInt32BE(macData, cipherNameLen, p += typeLen);
|
||
|
|
macData.write(cipherName, p += 4, cipherNameLen, 'ascii');
|
||
|
|
writeUInt32BE(macData, commentLen, p += cipherNameLen);
|
||
|
|
macData.write(comment, p += 4, commentLen, 'utf8');
|
||
|
|
writeUInt32BE(macData, pubLen, p += commentLen);
|
||
|
|
pubBlob.copy(macData, p += 4);
|
||
|
|
writeUInt32BE(macData, privLen, p += pubLen);
|
||
|
|
privBlob.copy(macData, p + 4);
|
||
|
|
|
||
|
|
if (!passphrase)
|
||
|
|
passphrase = EMPTY_PASSPHRASE;
|
||
|
|
|
||
|
|
var calcMAC = createHmac('sha1',
|
||
|
|
createHash('sha1')
|
||
|
|
.update('putty-private-key-file-mac-key')
|
||
|
|
.update(passphrase)
|
||
|
|
.digest())
|
||
|
|
.update(macData)
|
||
|
|
.digest('hex');
|
||
|
|
|
||
|
|
if (calcMAC !== mac) {
|
||
|
|
if (encrypted) {
|
||
|
|
return new Error(
|
||
|
|
'PPK private key integrity check failed -- bad passphrase?'
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
return new Error('PPK private key integrity check failed');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// avoid cyclic require by requiring on first use
|
||
|
|
if (!utils)
|
||
|
|
utils = require('./utils');
|
||
|
|
|
||
|
|
var pubPEM;
|
||
|
|
var pubSSH;
|
||
|
|
var privPEM;
|
||
|
|
pubBlob._pos = 0;
|
||
|
|
skipFields(pubBlob, 1); // skip (duplicate) key type
|
||
|
|
switch (type) {
|
||
|
|
case 'ssh-rsa':
|
||
|
|
var e = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (e === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var n = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (n === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var d = utils.readString(privBlob, 0);
|
||
|
|
if (d === false)
|
||
|
|
return new Error('Malformed PPK private key');
|
||
|
|
var p = utils.readString(privBlob, privBlob._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed PPK private key');
|
||
|
|
var q = utils.readString(privBlob, privBlob._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed PPK private key');
|
||
|
|
var iqmp = utils.readString(privBlob, privBlob._pos);
|
||
|
|
if (iqmp === false)
|
||
|
|
return new Error('Malformed PPK private key');
|
||
|
|
pubPEM = genOpenSSLRSAPub(n, e);
|
||
|
|
pubSSH = genOpenSSHRSAPub(n, e);
|
||
|
|
privPEM = genOpenSSLRSAPriv(n, e, d, iqmp, p, q);
|
||
|
|
break;
|
||
|
|
case 'ssh-dss':
|
||
|
|
var p = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var q = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var g = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (g === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var y = utils.readString(pubBlob, pubBlob._pos);
|
||
|
|
if (y === false)
|
||
|
|
return new Error('Malformed PPK public key');
|
||
|
|
var x = utils.readString(privBlob, 0);
|
||
|
|
if (x === false)
|
||
|
|
return new Error('Malformed PPK private key');
|
||
|
|
|
||
|
|
pubPEM = genOpenSSLDSAPub(p, q, g, y);
|
||
|
|
pubSSH = genOpenSSHDSAPub(p, q, g, y);
|
||
|
|
privPEM = genOpenSSLDSAPriv(p, q, g, y, x);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return new PPK_Private(type, comment, privPEM, pubPEM, pubSSH, 'sha1',
|
||
|
|
encrypted);
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
function parseDER(data, baseType, comment, fullType) {
|
||
|
|
// avoid cyclic require by requiring on first use
|
||
|
|
if (!utils)
|
||
|
|
utils = require('./utils');
|
||
|
|
|
||
|
|
var algo;
|
||
|
|
var pubPEM = null;
|
||
|
|
var pubSSH = null;
|
||
|
|
switch (baseType) {
|
||
|
|
case 'ssh-rsa':
|
||
|
|
var e = utils.readString(data, data._pos);
|
||
|
|
if (e === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
var n = utils.readString(data, data._pos);
|
||
|
|
if (n === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
pubPEM = genOpenSSLRSAPub(n, e);
|
||
|
|
pubSSH = genOpenSSHRSAPub(n, e);
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'ssh-dss':
|
||
|
|
var p = utils.readString(data, data._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
var q = utils.readString(data, data._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
var g = utils.readString(data, data._pos);
|
||
|
|
if (g === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
var y = utils.readString(data, data._pos);
|
||
|
|
if (y === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
pubPEM = genOpenSSLDSAPub(p, q, g, y);
|
||
|
|
pubSSH = genOpenSSHDSAPub(p, q, g, y);
|
||
|
|
algo = 'sha1';
|
||
|
|
break;
|
||
|
|
case 'ssh-ed25519':
|
||
|
|
var edpub = utils.readString(data, data._pos);
|
||
|
|
if (edpub === false || edpub.length !== 32)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
pubPEM = genOpenSSLEdPub(edpub);
|
||
|
|
pubSSH = genOpenSSHEdPub(edpub);
|
||
|
|
algo = null;
|
||
|
|
break;
|
||
|
|
case 'ecdsa-sha2-nistp256':
|
||
|
|
algo = 'sha256';
|
||
|
|
oid = '1.2.840.10045.3.1.7';
|
||
|
|
case 'ecdsa-sha2-nistp384':
|
||
|
|
if (algo === undefined) {
|
||
|
|
algo = 'sha384';
|
||
|
|
oid = '1.3.132.0.34';
|
||
|
|
}
|
||
|
|
case 'ecdsa-sha2-nistp521':
|
||
|
|
if (algo === undefined) {
|
||
|
|
algo = 'sha512';
|
||
|
|
oid = '1.3.132.0.35';
|
||
|
|
}
|
||
|
|
// TODO: validate curve name against type
|
||
|
|
if (!skipFields(data, 1)) // Skip curve name
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
var ecpub = utils.readString(data, data._pos);
|
||
|
|
if (ecpub === false)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
pubPEM = genOpenSSLECDSAPub(oid, ecpub);
|
||
|
|
pubSSH = genOpenSSHECDSAPub(oid, ecpub);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return new Error('Unsupported OpenSSH public key type: ' + baseType);
|
||
|
|
}
|
||
|
|
|
||
|
|
return new OpenSSH_Public(fullType, comment, pubPEM, pubSSH, algo);
|
||
|
|
}
|
||
|
|
function OpenSSH_Public(type, comment, pubPEM, pubSSH, algo) {
|
||
|
|
this.type = type;
|
||
|
|
this.comment = comment;
|
||
|
|
this[SYM_PRIV_PEM] = null;
|
||
|
|
this[SYM_PUB_PEM] = pubPEM;
|
||
|
|
this[SYM_PUB_SSH] = pubSSH;
|
||
|
|
this[SYM_HASH_ALGO] = algo;
|
||
|
|
this[SYM_DECRYPTED] = false;
|
||
|
|
}
|
||
|
|
OpenSSH_Public.prototype = BaseKey;
|
||
|
|
(function() {
|
||
|
|
var regexp;
|
||
|
|
if (EDDSA_SUPPORTED)
|
||
|
|
regexp = /^(((?:ssh-(?:rsa|dss|ed25519))|ecdsa-sha2-nistp(?:256|384|521))(?:-cert-v0[01]@openssh.com)?) ([A-Z0-9a-z\/+=]+)(?:$|\s+([\S].*)?)$/;
|
||
|
|
else
|
||
|
|
regexp = /^(((?:ssh-(?:rsa|dss))|ecdsa-sha2-nistp(?:256|384|521))(?:-cert-v0[01]@openssh.com)?) ([A-Z0-9a-z\/+=]+)(?:$|\s+([\S].*)?)$/;
|
||
|
|
OpenSSH_Public.parse = function(str) {
|
||
|
|
var m = regexp.exec(str);
|
||
|
|
if (m === null)
|
||
|
|
return null;
|
||
|
|
// m[1] = full type
|
||
|
|
// m[2] = base type
|
||
|
|
// m[3] = base64-encoded public key
|
||
|
|
// m[4] = comment
|
||
|
|
|
||
|
|
// avoid cyclic require by requiring on first use
|
||
|
|
if (!utils)
|
||
|
|
utils = require('./utils');
|
||
|
|
|
||
|
|
var fullType = m[1];
|
||
|
|
var baseType = m[2];
|
||
|
|
var data = Buffer.from(m[3], 'base64');
|
||
|
|
var comment = (m[4] || '');
|
||
|
|
|
||
|
|
var type = utils.readString(data, data._pos, 'ascii');
|
||
|
|
if (type === false || type.indexOf(baseType) !== 0)
|
||
|
|
return new Error('Malformed OpenSSH public key');
|
||
|
|
|
||
|
|
return parseDER(data, baseType, comment, fullType);
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
function RFC4716_Public(type, comment, pubPEM, pubSSH, algo) {
|
||
|
|
this.type = type;
|
||
|
|
this.comment = comment;
|
||
|
|
this[SYM_PRIV_PEM] = null;
|
||
|
|
this[SYM_PUB_PEM] = pubPEM;
|
||
|
|
this[SYM_PUB_SSH] = pubSSH;
|
||
|
|
this[SYM_HASH_ALGO] = algo;
|
||
|
|
this[SYM_DECRYPTED] = false;
|
||
|
|
}
|
||
|
|
RFC4716_Public.prototype = BaseKey;
|
||
|
|
(function() {
|
||
|
|
var regexp = /^---- BEGIN SSH2 PUBLIC KEY ----(?:\r\n|\n)((?:(?:[\x21-\x7E]+?):(?:(?:.*?\\\r?\n)*.*)(?:\r\n|\n))*)((?:[A-Z0-9a-z\/+=]+(?:\r\n|\n))+)---- END SSH2 PUBLIC KEY ----$/;
|
||
|
|
var RE_HEADER = /^([\x21-\x7E]+?):((?:.*?\\\r?\n)*.*)$/gm;
|
||
|
|
var RE_HEADER_ENDS = /\\\r?\n/g;
|
||
|
|
RFC4716_Public.parse = function(str) {
|
||
|
|
var m = regexp.exec(str);
|
||
|
|
if (m === null)
|
||
|
|
return null;
|
||
|
|
// m[1] = header(s)
|
||
|
|
// m[2] = base64-encoded public key
|
||
|
|
|
||
|
|
var headers = m[1];
|
||
|
|
var data = Buffer.from(m[2], 'base64');
|
||
|
|
var comment = '';
|
||
|
|
|
||
|
|
if (headers !== undefined) {
|
||
|
|
while (m = RE_HEADER.exec(headers)) {
|
||
|
|
if (m[1].toLowerCase() === 'comment') {
|
||
|
|
comment = trimStart(m[2].replace(RE_HEADER_ENDS, ''));
|
||
|
|
if (comment.length > 1
|
||
|
|
&& comment.charCodeAt(0) === 34/*'"'*/
|
||
|
|
&& comment.charCodeAt(comment.length - 1) === 34/*'"'*/) {
|
||
|
|
comment = comment.slice(1, -1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// avoid cyclic require by requiring on first use
|
||
|
|
if (!utils)
|
||
|
|
utils = require('./utils');
|
||
|
|
|
||
|
|
var type = utils.readString(data, 0, 'ascii');
|
||
|
|
if (type === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
|
||
|
|
var pubPEM = null;
|
||
|
|
var pubSSH = null;
|
||
|
|
switch (type) {
|
||
|
|
case 'ssh-rsa':
|
||
|
|
var e = utils.readString(data, data._pos);
|
||
|
|
if (e === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
var n = utils.readString(data, data._pos);
|
||
|
|
if (n === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
pubPEM = genOpenSSLRSAPub(n, e);
|
||
|
|
pubSSH = genOpenSSHRSAPub(n, e);
|
||
|
|
break;
|
||
|
|
case 'ssh-dss':
|
||
|
|
var p = utils.readString(data, data._pos);
|
||
|
|
if (p === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
var q = utils.readString(data, data._pos);
|
||
|
|
if (q === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
var g = utils.readString(data, data._pos);
|
||
|
|
if (g === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
var y = utils.readString(data, data._pos);
|
||
|
|
if (y === false)
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
pubPEM = genOpenSSLDSAPub(p, q, g, y);
|
||
|
|
pubSSH = genOpenSSHDSAPub(p, q, g, y);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return new Error('Malformed RFC4716 public key');
|
||
|
|
}
|
||
|
|
|
||
|
|
return new RFC4716_Public(type, comment, pubPEM, pubSSH, 'sha1');
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
parseDERKey: function parseDERKey(data, type) {
|
||
|
|
return parseDER(data, type, '', type);
|
||
|
|
},
|
||
|
|
parseKey: function parseKey(data, passphrase) {
|
||
|
|
if (Buffer.isBuffer(data))
|
||
|
|
data = data.toString('utf8').trim();
|
||
|
|
else if (typeof data !== 'string')
|
||
|
|
return new Error('Key data must be a Buffer or string');
|
||
|
|
else
|
||
|
|
data = data.trim();
|
||
|
|
|
||
|
|
// intentional !=
|
||
|
|
if (passphrase != undefined) {
|
||
|
|
if (typeof passphrase === 'string')
|
||
|
|
passphrase = Buffer.from(passphrase);
|
||
|
|
else if (!Buffer.isBuffer(passphrase))
|
||
|
|
return new Error('Passphrase must be a string or Buffer when supplied');
|
||
|
|
}
|
||
|
|
|
||
|
|
var ret;
|
||
|
|
|
||
|
|
// Private keys
|
||
|
|
if ((ret = OpenSSH_Private.parse(data, passphrase)) !== null)
|
||
|
|
return ret;
|
||
|
|
if ((ret = OpenSSH_Old_Private.parse(data, passphrase)) !== null)
|
||
|
|
return ret;
|
||
|
|
if ((ret = PPK_Private.parse(data, passphrase)) !== null)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
// Public keys
|
||
|
|
if ((ret = OpenSSH_Public.parse(data)) !== null)
|
||
|
|
return ret;
|
||
|
|
if ((ret = RFC4716_Public.parse(data)) !== null)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
return new Error('Unsupported key format');
|
||
|
|
}
|
||
|
|
}
|