1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/nss/lib/cryptohi/sechash.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,409 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +#include "sechash.h"
1.8 +#include "secoidt.h"
1.9 +#include "secerr.h"
1.10 +#include "blapi.h"
1.11 +#include "pk11func.h" /* for the PK11_ calls below. */
1.12 +
1.13 +static void *
1.14 +null_hash_new_context(void)
1.15 +{
1.16 + return NULL;
1.17 +}
1.18 +
1.19 +static void *
1.20 +null_hash_clone_context(void *v)
1.21 +{
1.22 + PORT_Assert(v == NULL);
1.23 + return NULL;
1.24 +}
1.25 +
1.26 +static void
1.27 +null_hash_begin(void *v)
1.28 +{
1.29 +}
1.30 +
1.31 +static void
1.32 +null_hash_update(void *v, const unsigned char *input, unsigned int length)
1.33 +{
1.34 +}
1.35 +
1.36 +static void
1.37 +null_hash_end(void *v, unsigned char *output, unsigned int *outLen,
1.38 + unsigned int maxOut)
1.39 +{
1.40 + *outLen = 0;
1.41 +}
1.42 +
1.43 +static void
1.44 +null_hash_destroy_context(void *v, PRBool b)
1.45 +{
1.46 + PORT_Assert(v == NULL);
1.47 +}
1.48 +
1.49 +
1.50 +static void *
1.51 +md2_NewContext(void) {
1.52 + return (void *) PK11_CreateDigestContext(SEC_OID_MD2);
1.53 +}
1.54 +
1.55 +static void *
1.56 +md5_NewContext(void) {
1.57 + return (void *) PK11_CreateDigestContext(SEC_OID_MD5);
1.58 +}
1.59 +
1.60 +static void *
1.61 +sha1_NewContext(void) {
1.62 + return (void *) PK11_CreateDigestContext(SEC_OID_SHA1);
1.63 +}
1.64 +
1.65 +static void *
1.66 +sha224_NewContext(void) {
1.67 + return (void *) PK11_CreateDigestContext(SEC_OID_SHA224);
1.68 +}
1.69 +
1.70 +static void *
1.71 +sha256_NewContext(void) {
1.72 + return (void *) PK11_CreateDigestContext(SEC_OID_SHA256);
1.73 +}
1.74 +
1.75 +static void *
1.76 +sha384_NewContext(void) {
1.77 + return (void *) PK11_CreateDigestContext(SEC_OID_SHA384);
1.78 +}
1.79 +
1.80 +static void *
1.81 +sha512_NewContext(void) {
1.82 + return (void *) PK11_CreateDigestContext(SEC_OID_SHA512);
1.83 +}
1.84 +
1.85 +const SECHashObject SECHashObjects[] = {
1.86 + { 0,
1.87 + (void * (*)(void)) null_hash_new_context,
1.88 + (void * (*)(void *)) null_hash_clone_context,
1.89 + (void (*)(void *, PRBool)) null_hash_destroy_context,
1.90 + (void (*)(void *)) null_hash_begin,
1.91 + (void (*)(void *, const unsigned char *, unsigned int)) null_hash_update,
1.92 + (void (*)(void *, unsigned char *, unsigned int *,
1.93 + unsigned int)) null_hash_end,
1.94 + 0,
1.95 + HASH_AlgNULL
1.96 + },
1.97 + { MD2_LENGTH,
1.98 + (void * (*)(void)) md2_NewContext,
1.99 + (void * (*)(void *)) PK11_CloneContext,
1.100 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.101 + (void (*)(void *)) PK11_DigestBegin,
1.102 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.103 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.104 + PK11_DigestFinal,
1.105 + MD2_BLOCK_LENGTH,
1.106 + HASH_AlgMD2
1.107 + },
1.108 + { MD5_LENGTH,
1.109 + (void * (*)(void)) md5_NewContext,
1.110 + (void * (*)(void *)) PK11_CloneContext,
1.111 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.112 + (void (*)(void *)) PK11_DigestBegin,
1.113 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.114 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.115 + PK11_DigestFinal,
1.116 + MD5_BLOCK_LENGTH,
1.117 + HASH_AlgMD5
1.118 + },
1.119 + { SHA1_LENGTH,
1.120 + (void * (*)(void)) sha1_NewContext,
1.121 + (void * (*)(void *)) PK11_CloneContext,
1.122 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.123 + (void (*)(void *)) PK11_DigestBegin,
1.124 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.125 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.126 + PK11_DigestFinal,
1.127 + SHA1_BLOCK_LENGTH,
1.128 + HASH_AlgSHA1
1.129 + },
1.130 + { SHA256_LENGTH,
1.131 + (void * (*)(void)) sha256_NewContext,
1.132 + (void * (*)(void *)) PK11_CloneContext,
1.133 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.134 + (void (*)(void *)) PK11_DigestBegin,
1.135 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.136 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.137 + PK11_DigestFinal,
1.138 + SHA256_BLOCK_LENGTH,
1.139 + HASH_AlgSHA256
1.140 + },
1.141 + { SHA384_LENGTH,
1.142 + (void * (*)(void)) sha384_NewContext,
1.143 + (void * (*)(void *)) PK11_CloneContext,
1.144 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.145 + (void (*)(void *)) PK11_DigestBegin,
1.146 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.147 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.148 + PK11_DigestFinal,
1.149 + SHA384_BLOCK_LENGTH,
1.150 + HASH_AlgSHA384
1.151 + },
1.152 + { SHA512_LENGTH,
1.153 + (void * (*)(void)) sha512_NewContext,
1.154 + (void * (*)(void *)) PK11_CloneContext,
1.155 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.156 + (void (*)(void *)) PK11_DigestBegin,
1.157 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.158 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.159 + PK11_DigestFinal,
1.160 + SHA512_BLOCK_LENGTH,
1.161 + HASH_AlgSHA512
1.162 + },
1.163 + { SHA224_LENGTH,
1.164 + (void * (*)(void)) sha224_NewContext,
1.165 + (void * (*)(void *)) PK11_CloneContext,
1.166 + (void (*)(void *, PRBool)) PK11_DestroyContext,
1.167 + (void (*)(void *)) PK11_DigestBegin,
1.168 + (void (*)(void *, const unsigned char *, unsigned int)) PK11_DigestOp,
1.169 + (void (*)(void *, unsigned char *, unsigned int *, unsigned int))
1.170 + PK11_DigestFinal,
1.171 + SHA224_BLOCK_LENGTH,
1.172 + HASH_AlgSHA224
1.173 + },
1.174 +};
1.175 +
1.176 +const SECHashObject *
1.177 +HASH_GetHashObject(HASH_HashType type)
1.178 +{
1.179 + return &SECHashObjects[type];
1.180 +}
1.181 +
1.182 +HASH_HashType
1.183 +HASH_GetHashTypeByOidTag(SECOidTag hashOid)
1.184 +{
1.185 + HASH_HashType ht = HASH_AlgNULL;
1.186 +
1.187 + switch(hashOid) {
1.188 + case SEC_OID_MD2: ht = HASH_AlgMD2; break;
1.189 + case SEC_OID_MD5: ht = HASH_AlgMD5; break;
1.190 + case SEC_OID_SHA1: ht = HASH_AlgSHA1; break;
1.191 + case SEC_OID_SHA224: ht = HASH_AlgSHA224; break;
1.192 + case SEC_OID_SHA256: ht = HASH_AlgSHA256; break;
1.193 + case SEC_OID_SHA384: ht = HASH_AlgSHA384; break;
1.194 + case SEC_OID_SHA512: ht = HASH_AlgSHA512; break;
1.195 + default: ht = HASH_AlgNULL;
1.196 + PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
1.197 + break;
1.198 + }
1.199 + return ht;
1.200 +}
1.201 +
1.202 +SECOidTag
1.203 +HASH_GetHashOidTagByHMACOidTag(SECOidTag hmacOid)
1.204 +{
1.205 + SECOidTag hashOid = SEC_OID_UNKNOWN;
1.206 +
1.207 + switch(hmacOid) {
1.208 + /* no oid exists for HMAC_MD2 */
1.209 + /* NSS does not define a oid for HMAC_MD4 */
1.210 + case SEC_OID_HMAC_SHA1: hashOid = SEC_OID_SHA1; break;
1.211 + case SEC_OID_HMAC_SHA224: hashOid = SEC_OID_SHA224; break;
1.212 + case SEC_OID_HMAC_SHA256: hashOid = SEC_OID_SHA256; break;
1.213 + case SEC_OID_HMAC_SHA384: hashOid = SEC_OID_SHA384; break;
1.214 + case SEC_OID_HMAC_SHA512: hashOid = SEC_OID_SHA512; break;
1.215 + default: hashOid = SEC_OID_UNKNOWN;
1.216 + PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
1.217 + break;
1.218 + }
1.219 + return hashOid;
1.220 +}
1.221 +
1.222 +SECOidTag
1.223 +HASH_GetHMACOidTagByHashOidTag(SECOidTag hashOid)
1.224 +{
1.225 + SECOidTag hmacOid = SEC_OID_UNKNOWN;
1.226 +
1.227 + switch(hashOid) {
1.228 + /* no oid exists for HMAC_MD2 */
1.229 + /* NSS does not define a oid for HMAC_MD4 */
1.230 + case SEC_OID_SHA1: hmacOid = SEC_OID_HMAC_SHA1; break;
1.231 + case SEC_OID_SHA224: hmacOid = SEC_OID_HMAC_SHA224; break;
1.232 + case SEC_OID_SHA256: hmacOid = SEC_OID_HMAC_SHA256; break;
1.233 + case SEC_OID_SHA384: hmacOid = SEC_OID_HMAC_SHA384; break;
1.234 + case SEC_OID_SHA512: hmacOid = SEC_OID_HMAC_SHA512; break;
1.235 + default: hmacOid = SEC_OID_UNKNOWN;
1.236 + PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
1.237 + break;
1.238 + }
1.239 + return hmacOid;
1.240 +}
1.241 +
1.242 +const SECHashObject *
1.243 +HASH_GetHashObjectByOidTag(SECOidTag hashOid)
1.244 +{
1.245 + HASH_HashType ht = HASH_GetHashTypeByOidTag(hashOid);
1.246 +
1.247 + return (ht == HASH_AlgNULL) ? NULL : &SECHashObjects[ht];
1.248 +}
1.249 +
1.250 +/* returns zero for unknown hash OID */
1.251 +unsigned int
1.252 +HASH_ResultLenByOidTag(SECOidTag hashOid)
1.253 +{
1.254 + const SECHashObject * hashObject = HASH_GetHashObjectByOidTag(hashOid);
1.255 + unsigned int resultLen = 0;
1.256 +
1.257 + if (hashObject)
1.258 + resultLen = hashObject->length;
1.259 + return resultLen;
1.260 +}
1.261 +
1.262 +/* returns zero if hash type invalid. */
1.263 +unsigned int
1.264 +HASH_ResultLen(HASH_HashType type)
1.265 +{
1.266 + if ( ( type < HASH_AlgNULL ) || ( type >= HASH_AlgTOTAL ) ) {
1.267 + PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
1.268 + return(0);
1.269 + }
1.270 +
1.271 + return(SECHashObjects[type].length);
1.272 +}
1.273 +
1.274 +unsigned int
1.275 +HASH_ResultLenContext(HASHContext *context)
1.276 +{
1.277 + return(context->hashobj->length);
1.278 +}
1.279 +
1.280 +
1.281 +
1.282 +SECStatus
1.283 +HASH_HashBuf(HASH_HashType type,
1.284 + unsigned char *dest,
1.285 + const unsigned char *src,
1.286 + PRUint32 src_len)
1.287 +{
1.288 + HASHContext *cx;
1.289 + unsigned int part;
1.290 +
1.291 + if ( ( type < HASH_AlgNULL ) || ( type >= HASH_AlgTOTAL ) ) {
1.292 + return(SECFailure);
1.293 + }
1.294 +
1.295 + cx = HASH_Create(type);
1.296 + if ( cx == NULL ) {
1.297 + return(SECFailure);
1.298 + }
1.299 + HASH_Begin(cx);
1.300 + HASH_Update(cx, src, src_len);
1.301 + HASH_End(cx, dest, &part, HASH_ResultLenContext(cx));
1.302 + HASH_Destroy(cx);
1.303 +
1.304 + return(SECSuccess);
1.305 +}
1.306 +
1.307 +HASHContext *
1.308 +HASH_Create(HASH_HashType type)
1.309 +{
1.310 + void *hash_context = NULL;
1.311 + HASHContext *ret = NULL;
1.312 +
1.313 + if ( ( type < HASH_AlgNULL ) || ( type >= HASH_AlgTOTAL ) ) {
1.314 + return(NULL);
1.315 + }
1.316 +
1.317 + hash_context = (* SECHashObjects[type].create)();
1.318 + if ( hash_context == NULL ) {
1.319 + goto loser;
1.320 + }
1.321 +
1.322 + ret = (HASHContext *)PORT_Alloc(sizeof(HASHContext));
1.323 + if ( ret == NULL ) {
1.324 + goto loser;
1.325 + }
1.326 +
1.327 + ret->hash_context = hash_context;
1.328 + ret->hashobj = &SECHashObjects[type];
1.329 +
1.330 + return(ret);
1.331 +
1.332 +loser:
1.333 + if ( hash_context != NULL ) {
1.334 + (* SECHashObjects[type].destroy)(hash_context, PR_TRUE);
1.335 + }
1.336 +
1.337 + return(NULL);
1.338 +}
1.339 +
1.340 +
1.341 +HASHContext *
1.342 +HASH_Clone(HASHContext *context)
1.343 +{
1.344 + void *hash_context = NULL;
1.345 + HASHContext *ret = NULL;
1.346 +
1.347 + hash_context = (* context->hashobj->clone)(context->hash_context);
1.348 + if ( hash_context == NULL ) {
1.349 + goto loser;
1.350 + }
1.351 +
1.352 + ret = (HASHContext *)PORT_Alloc(sizeof(HASHContext));
1.353 + if ( ret == NULL ) {
1.354 + goto loser;
1.355 + }
1.356 +
1.357 + ret->hash_context = hash_context;
1.358 + ret->hashobj = context->hashobj;
1.359 +
1.360 + return(ret);
1.361 +
1.362 +loser:
1.363 + if ( hash_context != NULL ) {
1.364 + (* context->hashobj->destroy)(hash_context, PR_TRUE);
1.365 + }
1.366 +
1.367 + return(NULL);
1.368 +
1.369 +}
1.370 +
1.371 +void
1.372 +HASH_Destroy(HASHContext *context)
1.373 +{
1.374 + (* context->hashobj->destroy)(context->hash_context, PR_TRUE);
1.375 + PORT_Free(context);
1.376 + return;
1.377 +}
1.378 +
1.379 +
1.380 +void
1.381 +HASH_Begin(HASHContext *context)
1.382 +{
1.383 + (* context->hashobj->begin)(context->hash_context);
1.384 + return;
1.385 +}
1.386 +
1.387 +
1.388 +void
1.389 +HASH_Update(HASHContext *context,
1.390 + const unsigned char *src,
1.391 + unsigned int len)
1.392 +{
1.393 + (* context->hashobj->update)(context->hash_context, src, len);
1.394 + return;
1.395 +}
1.396 +
1.397 +void
1.398 +HASH_End(HASHContext *context,
1.399 + unsigned char *result,
1.400 + unsigned int *result_len,
1.401 + unsigned int max_result_len)
1.402 +{
1.403 + (* context->hashobj->end)(context->hash_context, result, result_len,
1.404 + max_result_len);
1.405 + return;
1.406 +}
1.407 +
1.408 +HASH_HashType
1.409 +HASH_GetType(HASHContext *context)
1.410 +{
1.411 + return(context->hashobj->type);
1.412 +}
