diff options
Diffstat (limited to 'security/nss/lib/softoken/alghmac.c')
| -rw-r--r-- | security/nss/lib/softoken/alghmac.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/security/nss/lib/softoken/alghmac.c b/security/nss/lib/softoken/alghmac.c deleted file mode 100644 index aef81a76b..000000000 --- a/security/nss/lib/softoken/alghmac.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * The contents of this file are subject to the Mozilla Public - * License Version 1.1 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS - * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - * implied. See the License for the specific language governing - * rights and limitations under the License. - * - * The Original Code is the Netscape security libraries. - * - * The Initial Developer of the Original Code is Netscape - * Communications Corporation. Portions created by Netscape are - * Copyright (C) 1994-2000 Netscape Communications Corporation. All - * Rights Reserved. - * - * Contributor(s): - * - * Alternatively, the contents of this file may be used under the - * terms of the GNU General Public License Version 2 or later (the - * "GPL"), in which case the provisions of the GPL are applicable - * instead of those above. If you wish to allow use of your - * version of this file only under the terms of the GPL and not to - * allow others to use your version of this file under the MPL, - * indicate your decision by deleting the provisions above and - * replace them with the notice and other provisions required by - * the GPL. If you do not delete the provisions above, a recipient - * may use your version of this file under either the MPL or the - * GPL. - */ - -#include "alghmac.h" -#include "sechash.h" -#include "secoid.h" -#include "secport.h" - -#define HMAC_PAD_SIZE 64 - -struct HMACContextStr { - void *hash; - const SECHashObject *hashobj; - unsigned char ipad[HMAC_PAD_SIZE]; - unsigned char opad[HMAC_PAD_SIZE]; -}; - -void -HMAC_Destroy(HMACContext *cx) -{ - if (cx == NULL) - return; - - if (cx->hash != NULL) - cx->hashobj->destroy(cx->hash, PR_TRUE); - PORT_ZFree(cx, sizeof(HMACContext)); -} - -HMACContext * -HMAC_Create(SECOidTag hash_alg, - const unsigned char *secret, - unsigned int secret_len) -{ - HMACContext *cx; - int i; - unsigned char hashed_secret[SHA1_LENGTH]; - - cx = (HMACContext*)PORT_ZAlloc(sizeof(HMACContext)); - if (cx == NULL) - return NULL; - - switch (hash_alg) { - case SEC_OID_MD5: - cx->hashobj = &SECRawHashObjects[HASH_AlgMD5]; - break; - case SEC_OID_MD2: - cx->hashobj = &SECRawHashObjects[HASH_AlgMD2]; - break; - case SEC_OID_SHA1: - cx->hashobj = &SECRawHashObjects[HASH_AlgSHA1]; - break; - default: - goto loser; - } - - cx->hash = cx->hashobj->create(); - if (cx->hash == NULL) - goto loser; - - if (secret_len > HMAC_PAD_SIZE) { - cx->hashobj->begin( cx->hash); - cx->hashobj->update(cx->hash, secret, secret_len); - cx->hashobj->end( cx->hash, hashed_secret, &secret_len, - sizeof hashed_secret); - if (secret_len != cx->hashobj->length) - goto loser; - secret = (const unsigned char *)&hashed_secret[0]; - } - - PORT_Memset(cx->ipad, 0x36, sizeof cx->ipad); - PORT_Memset(cx->opad, 0x5c, sizeof cx->opad); - - /* fold secret into padding */ - for (i = 0; i < secret_len; i++) { - cx->ipad[i] ^= secret[i]; - cx->opad[i] ^= secret[i]; - } - PORT_Memset(hashed_secret, 0, sizeof hashed_secret); - return cx; - -loser: - PORT_Memset(hashed_secret, 0, sizeof hashed_secret); - HMAC_Destroy(cx); - return NULL; -} - -void -HMAC_Begin(HMACContext *cx) -{ - /* start inner hash */ - cx->hashobj->begin(cx->hash); - cx->hashobj->update(cx->hash, cx->ipad, sizeof(cx->ipad)); -} - -void -HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len) -{ - cx->hashobj->update(cx->hash, data, data_len); -} - -SECStatus -HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len, - unsigned int max_result_len) -{ - if (max_result_len < cx->hashobj->length) - return SECFailure; - - cx->hashobj->end(cx->hash, result, result_len, max_result_len); - if (*result_len != cx->hashobj->length) - return SECFailure; - - cx->hashobj->begin(cx->hash); - cx->hashobj->update(cx->hash, cx->opad, sizeof(cx->opad)); - cx->hashobj->update(cx->hash, result, *result_len); - cx->hashobj->end(cx->hash, result, result_len, max_result_len); - return SECSuccess; -} - -HMACContext * -HMAC_Clone(HMACContext *cx) -{ - HMACContext *newcx; - - newcx = (HMACContext*)PORT_ZAlloc(sizeof(HMACContext)); - if (newcx == NULL) - goto loser; - - newcx->hashobj = cx->hashobj; - newcx->hash = cx->hashobj->clone(cx->hash); - if (newcx->hash == NULL) - goto loser; - PORT_Memcpy(newcx->ipad, cx->ipad, sizeof(cx->ipad)); - PORT_Memcpy(newcx->opad, cx->opad, sizeof(cx->opad)); - return newcx; - -loser: - HMAC_Destroy(newcx); - return NULL; -} |