[6a3a178] | 1 | // Copyright 2015 Joyent, Inc.
|
---|
| 2 |
|
---|
| 3 | module.exports = {
|
---|
| 4 | read: read,
|
---|
| 5 | readPkcs1: readPkcs1,
|
---|
| 6 | write: write,
|
---|
| 7 | writePkcs1: writePkcs1
|
---|
| 8 | };
|
---|
| 9 |
|
---|
| 10 | var assert = require('assert-plus');
|
---|
| 11 | var asn1 = require('asn1');
|
---|
| 12 | var Buffer = require('safer-buffer').Buffer;
|
---|
| 13 | var algs = require('../algs');
|
---|
| 14 | var utils = require('../utils');
|
---|
| 15 |
|
---|
| 16 | var Key = require('../key');
|
---|
| 17 | var PrivateKey = require('../private-key');
|
---|
| 18 | var pem = require('./pem');
|
---|
| 19 |
|
---|
| 20 | var pkcs8 = require('./pkcs8');
|
---|
| 21 | var readECDSACurve = pkcs8.readECDSACurve;
|
---|
| 22 |
|
---|
| 23 | function read(buf, options) {
|
---|
| 24 | return (pem.read(buf, options, 'pkcs1'));
|
---|
| 25 | }
|
---|
| 26 |
|
---|
| 27 | function write(key, options) {
|
---|
| 28 | return (pem.write(key, options, 'pkcs1'));
|
---|
| 29 | }
|
---|
| 30 |
|
---|
| 31 | /* Helper to read in a single mpint */
|
---|
| 32 | function readMPInt(der, nm) {
|
---|
| 33 | assert.strictEqual(der.peek(), asn1.Ber.Integer,
|
---|
| 34 | nm + ' is not an Integer');
|
---|
| 35 | return (utils.mpNormalize(der.readString(asn1.Ber.Integer, true)));
|
---|
| 36 | }
|
---|
| 37 |
|
---|
| 38 | function readPkcs1(alg, type, der) {
|
---|
| 39 | switch (alg) {
|
---|
| 40 | case 'RSA':
|
---|
| 41 | if (type === 'public')
|
---|
| 42 | return (readPkcs1RSAPublic(der));
|
---|
| 43 | else if (type === 'private')
|
---|
| 44 | return (readPkcs1RSAPrivate(der));
|
---|
| 45 | throw (new Error('Unknown key type: ' + type));
|
---|
| 46 | case 'DSA':
|
---|
| 47 | if (type === 'public')
|
---|
| 48 | return (readPkcs1DSAPublic(der));
|
---|
| 49 | else if (type === 'private')
|
---|
| 50 | return (readPkcs1DSAPrivate(der));
|
---|
| 51 | throw (new Error('Unknown key type: ' + type));
|
---|
| 52 | case 'EC':
|
---|
| 53 | case 'ECDSA':
|
---|
| 54 | if (type === 'private')
|
---|
| 55 | return (readPkcs1ECDSAPrivate(der));
|
---|
| 56 | else if (type === 'public')
|
---|
| 57 | return (readPkcs1ECDSAPublic(der));
|
---|
| 58 | throw (new Error('Unknown key type: ' + type));
|
---|
| 59 | case 'EDDSA':
|
---|
| 60 | case 'EdDSA':
|
---|
| 61 | if (type === 'private')
|
---|
| 62 | return (readPkcs1EdDSAPrivate(der));
|
---|
| 63 | throw (new Error(type + ' keys not supported with EdDSA'));
|
---|
| 64 | default:
|
---|
| 65 | throw (new Error('Unknown key algo: ' + alg));
|
---|
| 66 | }
|
---|
| 67 | }
|
---|
| 68 |
|
---|
| 69 | function readPkcs1RSAPublic(der) {
|
---|
| 70 | // modulus and exponent
|
---|
| 71 | var n = readMPInt(der, 'modulus');
|
---|
| 72 | var e = readMPInt(der, 'exponent');
|
---|
| 73 |
|
---|
| 74 | // now, make the key
|
---|
| 75 | var key = {
|
---|
| 76 | type: 'rsa',
|
---|
| 77 | parts: [
|
---|
| 78 | { name: 'e', data: e },
|
---|
| 79 | { name: 'n', data: n }
|
---|
| 80 | ]
|
---|
| 81 | };
|
---|
| 82 |
|
---|
| 83 | return (new Key(key));
|
---|
| 84 | }
|
---|
| 85 |
|
---|
| 86 | function readPkcs1RSAPrivate(der) {
|
---|
| 87 | var version = readMPInt(der, 'version');
|
---|
| 88 | assert.strictEqual(version[0], 0);
|
---|
| 89 |
|
---|
| 90 | // modulus then public exponent
|
---|
| 91 | var n = readMPInt(der, 'modulus');
|
---|
| 92 | var e = readMPInt(der, 'public exponent');
|
---|
| 93 | var d = readMPInt(der, 'private exponent');
|
---|
| 94 | var p = readMPInt(der, 'prime1');
|
---|
| 95 | var q = readMPInt(der, 'prime2');
|
---|
| 96 | var dmodp = readMPInt(der, 'exponent1');
|
---|
| 97 | var dmodq = readMPInt(der, 'exponent2');
|
---|
| 98 | var iqmp = readMPInt(der, 'iqmp');
|
---|
| 99 |
|
---|
| 100 | // now, make the key
|
---|
| 101 | var key = {
|
---|
| 102 | type: 'rsa',
|
---|
| 103 | parts: [
|
---|
| 104 | { name: 'n', data: n },
|
---|
| 105 | { name: 'e', data: e },
|
---|
| 106 | { name: 'd', data: d },
|
---|
| 107 | { name: 'iqmp', data: iqmp },
|
---|
| 108 | { name: 'p', data: p },
|
---|
| 109 | { name: 'q', data: q },
|
---|
| 110 | { name: 'dmodp', data: dmodp },
|
---|
| 111 | { name: 'dmodq', data: dmodq }
|
---|
| 112 | ]
|
---|
| 113 | };
|
---|
| 114 |
|
---|
| 115 | return (new PrivateKey(key));
|
---|
| 116 | }
|
---|
| 117 |
|
---|
| 118 | function readPkcs1DSAPrivate(der) {
|
---|
| 119 | var version = readMPInt(der, 'version');
|
---|
| 120 | assert.strictEqual(version.readUInt8(0), 0);
|
---|
| 121 |
|
---|
| 122 | var p = readMPInt(der, 'p');
|
---|
| 123 | var q = readMPInt(der, 'q');
|
---|
| 124 | var g = readMPInt(der, 'g');
|
---|
| 125 | var y = readMPInt(der, 'y');
|
---|
| 126 | var x = readMPInt(der, 'x');
|
---|
| 127 |
|
---|
| 128 | // now, make the key
|
---|
| 129 | var key = {
|
---|
| 130 | type: 'dsa',
|
---|
| 131 | parts: [
|
---|
| 132 | { name: 'p', data: p },
|
---|
| 133 | { name: 'q', data: q },
|
---|
| 134 | { name: 'g', data: g },
|
---|
| 135 | { name: 'y', data: y },
|
---|
| 136 | { name: 'x', data: x }
|
---|
| 137 | ]
|
---|
| 138 | };
|
---|
| 139 |
|
---|
| 140 | return (new PrivateKey(key));
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 | function readPkcs1EdDSAPrivate(der) {
|
---|
| 144 | var version = readMPInt(der, 'version');
|
---|
| 145 | assert.strictEqual(version.readUInt8(0), 1);
|
---|
| 146 |
|
---|
| 147 | // private key
|
---|
| 148 | var k = der.readString(asn1.Ber.OctetString, true);
|
---|
| 149 |
|
---|
| 150 | der.readSequence(0xa0);
|
---|
| 151 | var oid = der.readOID();
|
---|
| 152 | assert.strictEqual(oid, '1.3.101.112', 'the ed25519 curve identifier');
|
---|
| 153 |
|
---|
| 154 | der.readSequence(0xa1);
|
---|
| 155 | var A = utils.readBitString(der);
|
---|
| 156 |
|
---|
| 157 | var key = {
|
---|
| 158 | type: 'ed25519',
|
---|
| 159 | parts: [
|
---|
| 160 | { name: 'A', data: utils.zeroPadToLength(A, 32) },
|
---|
| 161 | { name: 'k', data: k }
|
---|
| 162 | ]
|
---|
| 163 | };
|
---|
| 164 |
|
---|
| 165 | return (new PrivateKey(key));
|
---|
| 166 | }
|
---|
| 167 |
|
---|
| 168 | function readPkcs1DSAPublic(der) {
|
---|
| 169 | var y = readMPInt(der, 'y');
|
---|
| 170 | var p = readMPInt(der, 'p');
|
---|
| 171 | var q = readMPInt(der, 'q');
|
---|
| 172 | var g = readMPInt(der, 'g');
|
---|
| 173 |
|
---|
| 174 | var key = {
|
---|
| 175 | type: 'dsa',
|
---|
| 176 | parts: [
|
---|
| 177 | { name: 'y', data: y },
|
---|
| 178 | { name: 'p', data: p },
|
---|
| 179 | { name: 'q', data: q },
|
---|
| 180 | { name: 'g', data: g }
|
---|
| 181 | ]
|
---|
| 182 | };
|
---|
| 183 |
|
---|
| 184 | return (new Key(key));
|
---|
| 185 | }
|
---|
| 186 |
|
---|
| 187 | function readPkcs1ECDSAPublic(der) {
|
---|
| 188 | der.readSequence();
|
---|
| 189 |
|
---|
| 190 | var oid = der.readOID();
|
---|
| 191 | assert.strictEqual(oid, '1.2.840.10045.2.1', 'must be ecPublicKey');
|
---|
| 192 |
|
---|
| 193 | var curveOid = der.readOID();
|
---|
| 194 |
|
---|
| 195 | var curve;
|
---|
| 196 | var curves = Object.keys(algs.curves);
|
---|
| 197 | for (var j = 0; j < curves.length; ++j) {
|
---|
| 198 | var c = curves[j];
|
---|
| 199 | var cd = algs.curves[c];
|
---|
| 200 | if (cd.pkcs8oid === curveOid) {
|
---|
| 201 | curve = c;
|
---|
| 202 | break;
|
---|
| 203 | }
|
---|
| 204 | }
|
---|
| 205 | assert.string(curve, 'a known ECDSA named curve');
|
---|
| 206 |
|
---|
| 207 | var Q = der.readString(asn1.Ber.BitString, true);
|
---|
| 208 | Q = utils.ecNormalize(Q);
|
---|
| 209 |
|
---|
| 210 | var key = {
|
---|
| 211 | type: 'ecdsa',
|
---|
| 212 | parts: [
|
---|
| 213 | { name: 'curve', data: Buffer.from(curve) },
|
---|
| 214 | { name: 'Q', data: Q }
|
---|
| 215 | ]
|
---|
| 216 | };
|
---|
| 217 |
|
---|
| 218 | return (new Key(key));
|
---|
| 219 | }
|
---|
| 220 |
|
---|
| 221 | function readPkcs1ECDSAPrivate(der) {
|
---|
| 222 | var version = readMPInt(der, 'version');
|
---|
| 223 | assert.strictEqual(version.readUInt8(0), 1);
|
---|
| 224 |
|
---|
| 225 | // private key
|
---|
| 226 | var d = der.readString(asn1.Ber.OctetString, true);
|
---|
| 227 |
|
---|
| 228 | der.readSequence(0xa0);
|
---|
| 229 | var curve = readECDSACurve(der);
|
---|
| 230 | assert.string(curve, 'a known elliptic curve');
|
---|
| 231 |
|
---|
| 232 | der.readSequence(0xa1);
|
---|
| 233 | var Q = der.readString(asn1.Ber.BitString, true);
|
---|
| 234 | Q = utils.ecNormalize(Q);
|
---|
| 235 |
|
---|
| 236 | var key = {
|
---|
| 237 | type: 'ecdsa',
|
---|
| 238 | parts: [
|
---|
| 239 | { name: 'curve', data: Buffer.from(curve) },
|
---|
| 240 | { name: 'Q', data: Q },
|
---|
| 241 | { name: 'd', data: d }
|
---|
| 242 | ]
|
---|
| 243 | };
|
---|
| 244 |
|
---|
| 245 | return (new PrivateKey(key));
|
---|
| 246 | }
|
---|
| 247 |
|
---|
| 248 | function writePkcs1(der, key) {
|
---|
| 249 | der.startSequence();
|
---|
| 250 |
|
---|
| 251 | switch (key.type) {
|
---|
| 252 | case 'rsa':
|
---|
| 253 | if (PrivateKey.isPrivateKey(key))
|
---|
| 254 | writePkcs1RSAPrivate(der, key);
|
---|
| 255 | else
|
---|
| 256 | writePkcs1RSAPublic(der, key);
|
---|
| 257 | break;
|
---|
| 258 | case 'dsa':
|
---|
| 259 | if (PrivateKey.isPrivateKey(key))
|
---|
| 260 | writePkcs1DSAPrivate(der, key);
|
---|
| 261 | else
|
---|
| 262 | writePkcs1DSAPublic(der, key);
|
---|
| 263 | break;
|
---|
| 264 | case 'ecdsa':
|
---|
| 265 | if (PrivateKey.isPrivateKey(key))
|
---|
| 266 | writePkcs1ECDSAPrivate(der, key);
|
---|
| 267 | else
|
---|
| 268 | writePkcs1ECDSAPublic(der, key);
|
---|
| 269 | break;
|
---|
| 270 | case 'ed25519':
|
---|
| 271 | if (PrivateKey.isPrivateKey(key))
|
---|
| 272 | writePkcs1EdDSAPrivate(der, key);
|
---|
| 273 | else
|
---|
| 274 | writePkcs1EdDSAPublic(der, key);
|
---|
| 275 | break;
|
---|
| 276 | default:
|
---|
| 277 | throw (new Error('Unknown key algo: ' + key.type));
|
---|
| 278 | }
|
---|
| 279 |
|
---|
| 280 | der.endSequence();
|
---|
| 281 | }
|
---|
| 282 |
|
---|
| 283 | function writePkcs1RSAPublic(der, key) {
|
---|
| 284 | der.writeBuffer(key.part.n.data, asn1.Ber.Integer);
|
---|
| 285 | der.writeBuffer(key.part.e.data, asn1.Ber.Integer);
|
---|
| 286 | }
|
---|
| 287 |
|
---|
| 288 | function writePkcs1RSAPrivate(der, key) {
|
---|
| 289 | var ver = Buffer.from([0]);
|
---|
| 290 | der.writeBuffer(ver, asn1.Ber.Integer);
|
---|
| 291 |
|
---|
| 292 | der.writeBuffer(key.part.n.data, asn1.Ber.Integer);
|
---|
| 293 | der.writeBuffer(key.part.e.data, asn1.Ber.Integer);
|
---|
| 294 | der.writeBuffer(key.part.d.data, asn1.Ber.Integer);
|
---|
| 295 | der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
|
---|
| 296 | der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
|
---|
| 297 | if (!key.part.dmodp || !key.part.dmodq)
|
---|
| 298 | utils.addRSAMissing(key);
|
---|
| 299 | der.writeBuffer(key.part.dmodp.data, asn1.Ber.Integer);
|
---|
| 300 | der.writeBuffer(key.part.dmodq.data, asn1.Ber.Integer);
|
---|
| 301 | der.writeBuffer(key.part.iqmp.data, asn1.Ber.Integer);
|
---|
| 302 | }
|
---|
| 303 |
|
---|
| 304 | function writePkcs1DSAPrivate(der, key) {
|
---|
| 305 | var ver = Buffer.from([0]);
|
---|
| 306 | der.writeBuffer(ver, asn1.Ber.Integer);
|
---|
| 307 |
|
---|
| 308 | der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
|
---|
| 309 | der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
|
---|
| 310 | der.writeBuffer(key.part.g.data, asn1.Ber.Integer);
|
---|
| 311 | der.writeBuffer(key.part.y.data, asn1.Ber.Integer);
|
---|
| 312 | der.writeBuffer(key.part.x.data, asn1.Ber.Integer);
|
---|
| 313 | }
|
---|
| 314 |
|
---|
| 315 | function writePkcs1DSAPublic(der, key) {
|
---|
| 316 | der.writeBuffer(key.part.y.data, asn1.Ber.Integer);
|
---|
| 317 | der.writeBuffer(key.part.p.data, asn1.Ber.Integer);
|
---|
| 318 | der.writeBuffer(key.part.q.data, asn1.Ber.Integer);
|
---|
| 319 | der.writeBuffer(key.part.g.data, asn1.Ber.Integer);
|
---|
| 320 | }
|
---|
| 321 |
|
---|
| 322 | function writePkcs1ECDSAPublic(der, key) {
|
---|
| 323 | der.startSequence();
|
---|
| 324 |
|
---|
| 325 | der.writeOID('1.2.840.10045.2.1'); /* ecPublicKey */
|
---|
| 326 | var curve = key.part.curve.data.toString();
|
---|
| 327 | var curveOid = algs.curves[curve].pkcs8oid;
|
---|
| 328 | assert.string(curveOid, 'a known ECDSA named curve');
|
---|
| 329 | der.writeOID(curveOid);
|
---|
| 330 |
|
---|
| 331 | der.endSequence();
|
---|
| 332 |
|
---|
| 333 | var Q = utils.ecNormalize(key.part.Q.data, true);
|
---|
| 334 | der.writeBuffer(Q, asn1.Ber.BitString);
|
---|
| 335 | }
|
---|
| 336 |
|
---|
| 337 | function writePkcs1ECDSAPrivate(der, key) {
|
---|
| 338 | var ver = Buffer.from([1]);
|
---|
| 339 | der.writeBuffer(ver, asn1.Ber.Integer);
|
---|
| 340 |
|
---|
| 341 | der.writeBuffer(key.part.d.data, asn1.Ber.OctetString);
|
---|
| 342 |
|
---|
| 343 | der.startSequence(0xa0);
|
---|
| 344 | var curve = key.part.curve.data.toString();
|
---|
| 345 | var curveOid = algs.curves[curve].pkcs8oid;
|
---|
| 346 | assert.string(curveOid, 'a known ECDSA named curve');
|
---|
| 347 | der.writeOID(curveOid);
|
---|
| 348 | der.endSequence();
|
---|
| 349 |
|
---|
| 350 | der.startSequence(0xa1);
|
---|
| 351 | var Q = utils.ecNormalize(key.part.Q.data, true);
|
---|
| 352 | der.writeBuffer(Q, asn1.Ber.BitString);
|
---|
| 353 | der.endSequence();
|
---|
| 354 | }
|
---|
| 355 |
|
---|
| 356 | function writePkcs1EdDSAPrivate(der, key) {
|
---|
| 357 | var ver = Buffer.from([1]);
|
---|
| 358 | der.writeBuffer(ver, asn1.Ber.Integer);
|
---|
| 359 |
|
---|
| 360 | der.writeBuffer(key.part.k.data, asn1.Ber.OctetString);
|
---|
| 361 |
|
---|
| 362 | der.startSequence(0xa0);
|
---|
| 363 | der.writeOID('1.3.101.112');
|
---|
| 364 | der.endSequence();
|
---|
| 365 |
|
---|
| 366 | der.startSequence(0xa1);
|
---|
| 367 | utils.writeBitString(der, key.part.A.data);
|
---|
| 368 | der.endSequence();
|
---|
| 369 | }
|
---|
| 370 |
|
---|
| 371 | function writePkcs1EdDSAPublic(der, key) {
|
---|
| 372 | throw (new Error('Public keys are not supported for EdDSA PKCS#1'));
|
---|
| 373 | }
|
---|