source: trip-planner-front/node_modules/sshpk/lib/formats/pkcs1.js@ ceaed42

Last change on this file since ceaed42 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1// Copyright 2015 Joyent, Inc.
2
3module.exports = {
4 read: read,
5 readPkcs1: readPkcs1,
6 write: write,
7 writePkcs1: writePkcs1
8};
9
10var assert = require('assert-plus');
11var asn1 = require('asn1');
12var Buffer = require('safer-buffer').Buffer;
13var algs = require('../algs');
14var utils = require('../utils');
15
16var Key = require('../key');
17var PrivateKey = require('../private-key');
18var pem = require('./pem');
19
20var pkcs8 = require('./pkcs8');
21var readECDSACurve = pkcs8.readECDSACurve;
22
23function read(buf, options) {
24 return (pem.read(buf, options, 'pkcs1'));
25}
26
27function write(key, options) {
28 return (pem.write(key, options, 'pkcs1'));
29}
30
31/* Helper to read in a single mpint */
32function 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
38function 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
69function 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
86function 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
118function 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
143function 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
168function 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
187function 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
221function 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
248function 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
283function 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
288function 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
304function 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
315function 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
322function 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
337function 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
356function 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
371function writePkcs1EdDSAPublic(der, key) {
372 throw (new Error('Public keys are not supported for EdDSA PKCS#1'));
373}
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