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comparison: security/nss/lib/freebl/alghmac.h
security/nss/lib/freebl/alghmac.h
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef _ALGHMAC_H_ | |
| 6 #define _ALGHMAC_H_ | |
| 7 | |
| 8 typedef struct HMACContextStr HMACContext; | |
| 9 | |
| 10 SEC_BEGIN_PROTOS | |
| 11 | |
| 12 /* destroy HMAC context */ | |
| 13 extern void | |
| 14 HMAC_Destroy(HMACContext *cx, PRBool freeit); | |
| 15 | |
| 16 /* create HMAC context | |
| 17 * hash_obj hash object from SECRawHashObjects[] | |
| 18 * secret the secret with which the HMAC is performed. | |
| 19 * secret_len the length of the secret. | |
| 20 * isFIPS true if conforming to FIPS 198. | |
| 21 * | |
| 22 * NULL is returned if an error occurs. | |
| 23 */ | |
| 24 extern HMACContext * | |
| 25 HMAC_Create(const SECHashObject *hash_obj, const unsigned char *secret, | |
| 26 unsigned int secret_len, PRBool isFIPS); | |
| 27 | |
| 28 /* like HMAC_Create, except caller allocates HMACContext. */ | |
| 29 SECStatus | |
| 30 HMAC_Init(HMACContext *cx, const SECHashObject *hash_obj, | |
| 31 const unsigned char *secret, unsigned int secret_len, PRBool isFIPS); | |
| 32 | |
| 33 /* reset HMAC for a fresh round */ | |
| 34 extern void | |
| 35 HMAC_Begin(HMACContext *cx); | |
| 36 | |
| 37 /* update HMAC | |
| 38 * cx HMAC Context | |
| 39 * data the data to perform HMAC on | |
| 40 * data_len the length of the data to process | |
| 41 */ | |
| 42 extern void | |
| 43 HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len); | |
| 44 | |
| 45 /* Finish HMAC -- place the results within result | |
| 46 * cx HMAC context | |
| 47 * result buffer for resulting hmac'd data | |
| 48 * result_len where the resultant hmac length is stored | |
| 49 * max_result_len maximum possible length that can be stored in result | |
| 50 */ | |
| 51 extern SECStatus | |
| 52 HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len, | |
| 53 unsigned int max_result_len); | |
| 54 | |
| 55 /* clone a copy of the HMAC state. this is usefult when you would | |
| 56 * need to keep a running hmac but also need to extract portions | |
| 57 * partway through the process. | |
| 58 */ | |
| 59 extern HMACContext * | |
| 60 HMAC_Clone(HMACContext *cx); | |
| 61 | |
| 62 SEC_END_PROTOS | |
| 63 | |
| 64 #endif |
