summaryrefslogtreecommitdiff
path: root/security/nss/lib/softoken/lowkey.c
blob: 73b1dc9714d25f358cad3c918fb878f89aa859ea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "lowkeyi.h"
#include "secoid.h"
#include "secitem.h"
#include "secder.h"
#include "base64.h"
#include "secasn1.h"
#include "secerr.h"

#ifndef NSS_DISABLE_ECC
#include "softoken.h"
#endif

SEC_ASN1_MKSUB(SEC_AnyTemplate)
SEC_ASN1_MKSUB(SEC_BitStringTemplate)
SEC_ASN1_MKSUB(SEC_ObjectIDTemplate)
SEC_ASN1_MKSUB(SECOID_AlgorithmIDTemplate)

const SEC_ASN1Template nsslowkey_AttributeTemplate[] = {
    { SEC_ASN1_SEQUENCE,
      0, NULL, sizeof(NSSLOWKEYAttribute) },
    { SEC_ASN1_OBJECT_ID, offsetof(NSSLOWKEYAttribute, attrType) },
    { SEC_ASN1_SET_OF | SEC_ASN1_XTRN,
      offsetof(NSSLOWKEYAttribute, attrValue),
      SEC_ASN1_SUB(SEC_AnyTemplate) },
    { 0 }
};

const SEC_ASN1Template nsslowkey_SetOfAttributeTemplate[] = {
    { SEC_ASN1_SET_OF, 0, nsslowkey_AttributeTemplate },
};
/* ASN1 Templates for new decoder/encoder */
const SEC_ASN1Template nsslowkey_PrivateKeyInfoTemplate[] = {
    { SEC_ASN1_SEQUENCE,
      0, NULL, sizeof(NSSLOWKEYPrivateKeyInfo) },
    { SEC_ASN1_INTEGER,
      offsetof(NSSLOWKEYPrivateKeyInfo, version) },
    { SEC_ASN1_INLINE | SEC_ASN1_XTRN,
      offsetof(NSSLOWKEYPrivateKeyInfo, algorithm),
      SEC_ASN1_SUB(SECOID_AlgorithmIDTemplate) },
    { SEC_ASN1_OCTET_STRING,
      offsetof(NSSLOWKEYPrivateKeyInfo, privateKey) },
    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED | SEC_ASN1_CONTEXT_SPECIFIC | 0,
      offsetof(NSSLOWKEYPrivateKeyInfo, attributes),
      nsslowkey_SetOfAttributeTemplate },
    { 0 }
};

const SEC_ASN1Template nsslowkey_PQGParamsTemplate[] = {
    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(PQGParams) },
    { SEC_ASN1_INTEGER, offsetof(PQGParams, prime) },
    { SEC_ASN1_INTEGER, offsetof(PQGParams, subPrime) },
    { SEC_ASN1_INTEGER, offsetof(PQGParams, base) },
    { 0 }
};

const SEC_ASN1Template nsslowkey_RSAPrivateKeyTemplate[] = {
    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.version) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.modulus) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.publicExponent) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.privateExponent) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime1) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.prime2) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent1) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.exponent2) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.rsa.coefficient) },
    { 0 }
};

const SEC_ASN1Template nsslowkey_DSAPrivateKeyTemplate[] = {
    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dsa.publicValue) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dsa.privateValue) },
    { 0 }
};

const SEC_ASN1Template nsslowkey_DSAPrivateKeyExportTemplate[] = {
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dsa.privateValue) },
};

const SEC_ASN1Template nsslowkey_DHPrivateKeyTemplate[] = {
    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.publicValue) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.privateValue) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.base) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.dh.prime) },
    { 0 }
};

#ifndef NSS_DISABLE_ECC

/* NOTE: The SECG specification allows the private key structure
 * to contain curve parameters but recommends that they be stored
 * in the PrivateKeyAlgorithmIdentifier field of the PrivateKeyInfo
 * instead.
 */
const SEC_ASN1Template nsslowkey_ECPrivateKeyTemplate[] = {
    { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(NSSLOWKEYPrivateKey) },
    { SEC_ASN1_INTEGER, offsetof(NSSLOWKEYPrivateKey, u.ec.version) },
    { SEC_ASN1_OCTET_STRING,
      offsetof(NSSLOWKEYPrivateKey, u.ec.privateValue) },
    /* We only support named curves for which the parameters are
     * encoded as an object ID.
     */
    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
          SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC |
          SEC_ASN1_XTRN | 0,
      offsetof(NSSLOWKEYPrivateKey, u.ec.ecParams.curveOID),
      SEC_ASN1_SUB(SEC_ObjectIDTemplate) },
    { SEC_ASN1_OPTIONAL | SEC_ASN1_CONSTRUCTED |
          SEC_ASN1_EXPLICIT | SEC_ASN1_CONTEXT_SPECIFIC |
          SEC_ASN1_XTRN | 1,
      offsetof(NSSLOWKEYPrivateKey, u.ec.publicValue),
      SEC_ASN1_SUB(SEC_BitStringTemplate) },
    { 0 }
};
#endif /* NSS_DISABLE_ECC */
/*
 * See bugzilla bug 125359
 * Since NSS (via PKCS#11) wants to handle big integers as unsigned ints,
 * all of the templates above that en/decode into integers must be converted
 * from ASN.1's signed integer type.  This is done by marking either the
 * source or destination (encoding or decoding, respectively) type as
 * siUnsignedInteger.
 */

void
prepare_low_rsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
    key->u.rsa.modulus.type = siUnsignedInteger;
    key->u.rsa.publicExponent.type = siUnsignedInteger;
    key->u.rsa.privateExponent.type = siUnsignedInteger;
    key->u.rsa.prime1.type = siUnsignedInteger;
    key->u.rsa.prime2.type = siUnsignedInteger;
    key->u.rsa.exponent1.type = siUnsignedInteger;
    key->u.rsa.exponent2.type = siUnsignedInteger;
    key->u.rsa.coefficient.type = siUnsignedInteger;
}

void
prepare_low_pqg_params_for_asn1(PQGParams *params)
{
    params->prime.type = siUnsignedInteger;
    params->subPrime.type = siUnsignedInteger;
    params->base.type = siUnsignedInteger;
}

void
prepare_low_dsa_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
    key->u.dsa.publicValue.type = siUnsignedInteger;
    key->u.dsa.privateValue.type = siUnsignedInteger;
    key->u.dsa.params.prime.type = siUnsignedInteger;
    key->u.dsa.params.subPrime.type = siUnsignedInteger;
    key->u.dsa.params.base.type = siUnsignedInteger;
}

void
prepare_low_dsa_priv_key_export_for_asn1(NSSLOWKEYPrivateKey *key)
{
    key->u.dsa.privateValue.type = siUnsignedInteger;
}

void
prepare_low_dh_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
    key->u.dh.prime.type = siUnsignedInteger;
    key->u.dh.base.type = siUnsignedInteger;
    key->u.dh.publicValue.type = siUnsignedInteger;
    key->u.dh.privateValue.type = siUnsignedInteger;
}

#ifndef NSS_DISABLE_ECC
void
prepare_low_ecparams_for_asn1(ECParams *params)
{
    params->DEREncoding.type = siUnsignedInteger;
    params->curveOID.type = siUnsignedInteger;
}

void
prepare_low_ec_priv_key_for_asn1(NSSLOWKEYPrivateKey *key)
{
    key->u.ec.version.type = siUnsignedInteger;
    key->u.ec.ecParams.DEREncoding.type = siUnsignedInteger;
    key->u.ec.ecParams.curveOID.type = siUnsignedInteger;
    key->u.ec.privateValue.type = siUnsignedInteger;
    key->u.ec.publicValue.type = siUnsignedInteger;
}
#endif /* NSS_DISABLE_ECC */

void
nsslowkey_DestroyPrivateKey(NSSLOWKEYPrivateKey *privk)
{
    if (privk && privk->arena) {
        PORT_FreeArena(privk->arena, PR_TRUE);
    }
}

void
nsslowkey_DestroyPublicKey(NSSLOWKEYPublicKey *pubk)
{
    if (pubk && pubk->arena) {
        PORT_FreeArena(pubk->arena, PR_FALSE);
    }
}
unsigned
nsslowkey_PublicModulusLen(NSSLOWKEYPublicKey *pubk)
{
    unsigned char b0;

    /* interpret modulus length as key strength... in
     * fortezza that's the public key length */

    switch (pubk->keyType) {
        case NSSLOWKEYRSAKey:
            b0 = pubk->u.rsa.modulus.data[0];
            return b0 ? pubk->u.rsa.modulus.len : pubk->u.rsa.modulus.len - 1;
        default:
            break;
    }
    return 0;
}

unsigned
nsslowkey_PrivateModulusLen(NSSLOWKEYPrivateKey *privk)
{

    unsigned char b0;

    switch (privk->keyType) {
        case NSSLOWKEYRSAKey:
            b0 = privk->u.rsa.modulus.data[0];
            return b0 ? privk->u.rsa.modulus.len : privk->u.rsa.modulus.len - 1;
        default:
            break;
    }
    return 0;
}

NSSLOWKEYPublicKey *
nsslowkey_ConvertToPublicKey(NSSLOWKEYPrivateKey *privk)
{
    NSSLOWKEYPublicKey *pubk;
    PLArenaPool *arena;

    arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    if (arena == NULL) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        return NULL;
    }

    switch (privk->keyType) {
        case NSSLOWKEYRSAKey:
        case NSSLOWKEYNullKey:
            pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
                                                          sizeof(NSSLOWKEYPublicKey));
            if (pubk != NULL) {
                SECStatus rv;

                pubk->arena = arena;
                pubk->keyType = privk->keyType;
                if (privk->keyType == NSSLOWKEYNullKey)
                    return pubk;
                rv = SECITEM_CopyItem(arena, &pubk->u.rsa.modulus,
                                      &privk->u.rsa.modulus);
                if (rv == SECSuccess) {
                    rv = SECITEM_CopyItem(arena, &pubk->u.rsa.publicExponent,
                                          &privk->u.rsa.publicExponent);
                    if (rv == SECSuccess)
                        return pubk;
                }
            } else {
                PORT_SetError(SEC_ERROR_NO_MEMORY);
            }
            break;
        case NSSLOWKEYDSAKey:
            pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
                                                          sizeof(NSSLOWKEYPublicKey));
            if (pubk != NULL) {
                SECStatus rv;

                pubk->arena = arena;
                pubk->keyType = privk->keyType;
                rv = SECITEM_CopyItem(arena, &pubk->u.dsa.publicValue,
                                      &privk->u.dsa.publicValue);
                if (rv != SECSuccess)
                    break;
                rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.prime,
                                      &privk->u.dsa.params.prime);
                if (rv != SECSuccess)
                    break;
                rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.subPrime,
                                      &privk->u.dsa.params.subPrime);
                if (rv != SECSuccess)
                    break;
                rv = SECITEM_CopyItem(arena, &pubk->u.dsa.params.base,
                                      &privk->u.dsa.params.base);
                if (rv == SECSuccess)
                    return pubk;
            }
            break;
        case NSSLOWKEYDHKey:
            pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
                                                          sizeof(NSSLOWKEYPublicKey));
            if (pubk != NULL) {
                SECStatus rv;

                pubk->arena = arena;
                pubk->keyType = privk->keyType;
                rv = SECITEM_CopyItem(arena, &pubk->u.dh.publicValue,
                                      &privk->u.dh.publicValue);
                if (rv != SECSuccess)
                    break;
                rv = SECITEM_CopyItem(arena, &pubk->u.dh.prime,
                                      &privk->u.dh.prime);
                if (rv != SECSuccess)
                    break;
                rv = SECITEM_CopyItem(arena, &pubk->u.dh.base,
                                      &privk->u.dh.base);
                if (rv == SECSuccess)
                    return pubk;
            }
            break;
#ifndef NSS_DISABLE_ECC
        case NSSLOWKEYECKey:
            pubk = (NSSLOWKEYPublicKey *)PORT_ArenaZAlloc(arena,
                                                          sizeof(NSSLOWKEYPublicKey));
            if (pubk != NULL) {
                SECStatus rv;

                pubk->arena = arena;
                pubk->keyType = privk->keyType;
                rv = SECITEM_CopyItem(arena, &pubk->u.ec.publicValue,
                                      &privk->u.ec.publicValue);
                if (rv != SECSuccess)
                    break;
                pubk->u.ec.ecParams.arena = arena;
                /* Copy the rest of the params */
                rv = EC_CopyParams(arena, &(pubk->u.ec.ecParams),
                                   &(privk->u.ec.ecParams));
                if (rv == SECSuccess)
                    return pubk;
            }
            break;
#endif /* NSS_DISABLE_ECC */
        /* No Fortezza in Low Key implementations (Fortezza keys aren't
         * stored in our data base */
        default:
            break;
    }

    PORT_FreeArena(arena, PR_FALSE);
    return NULL;
}

NSSLOWKEYPrivateKey *
nsslowkey_CopyPrivateKey(NSSLOWKEYPrivateKey *privKey)
{
    NSSLOWKEYPrivateKey *returnKey = NULL;
    SECStatus rv = SECFailure;
    PLArenaPool *poolp;

    if (!privKey) {
        return NULL;
    }

    poolp = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    if (!poolp) {
        return NULL;
    }

    returnKey = (NSSLOWKEYPrivateKey *)PORT_ArenaZAlloc(poolp, sizeof(NSSLOWKEYPrivateKey));
    if (!returnKey) {
        rv = SECFailure;
        goto loser;
    }

    returnKey->keyType = privKey->keyType;
    returnKey->arena = poolp;

    switch (privKey->keyType) {
        case NSSLOWKEYRSAKey:
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.modulus),
                                  &(privKey->u.rsa.modulus));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.version),
                                  &(privKey->u.rsa.version));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.publicExponent),
                                  &(privKey->u.rsa.publicExponent));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.privateExponent),
                                  &(privKey->u.rsa.privateExponent));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.prime1),
                                  &(privKey->u.rsa.prime1));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.prime2),
                                  &(privKey->u.rsa.prime2));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.exponent1),
                                  &(privKey->u.rsa.exponent1));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.exponent2),
                                  &(privKey->u.rsa.exponent2));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.rsa.coefficient),
                                  &(privKey->u.rsa.coefficient));
            if (rv != SECSuccess)
                break;
            break;
        case NSSLOWKEYDSAKey:
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.publicValue),
                                  &(privKey->u.dsa.publicValue));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.privateValue),
                                  &(privKey->u.dsa.privateValue));
            if (rv != SECSuccess)
                break;
            returnKey->u.dsa.params.arena = poolp;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.prime),
                                  &(privKey->u.dsa.params.prime));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.subPrime),
                                  &(privKey->u.dsa.params.subPrime));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dsa.params.base),
                                  &(privKey->u.dsa.params.base));
            if (rv != SECSuccess)
                break;
            break;
        case NSSLOWKEYDHKey:
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.publicValue),
                                  &(privKey->u.dh.publicValue));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.privateValue),
                                  &(privKey->u.dh.privateValue));
            if (rv != SECSuccess)
                break;
            returnKey->u.dsa.params.arena = poolp;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.prime),
                                  &(privKey->u.dh.prime));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.dh.base),
                                  &(privKey->u.dh.base));
            if (rv != SECSuccess)
                break;
            break;
#ifndef NSS_DISABLE_ECC
        case NSSLOWKEYECKey:
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.version),
                                  &(privKey->u.ec.version));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.publicValue),
                                  &(privKey->u.ec.publicValue));
            if (rv != SECSuccess)
                break;
            rv = SECITEM_CopyItem(poolp, &(returnKey->u.ec.privateValue),
                                  &(privKey->u.ec.privateValue));
            if (rv != SECSuccess)
                break;
            returnKey->u.ec.ecParams.arena = poolp;
            /* Copy the rest of the params */
            rv = EC_CopyParams(poolp, &(returnKey->u.ec.ecParams),
                               &(privKey->u.ec.ecParams));
            if (rv != SECSuccess)
                break;
            break;
#endif /* NSS_DISABLE_ECC */
        default:
            rv = SECFailure;
    }

loser:

    if (rv != SECSuccess) {
        PORT_FreeArena(poolp, PR_TRUE);
        returnKey = NULL;
    }

    return returnKey;
}