| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * 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 |
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| * |
| * 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 the Initial Developer are Copyright (C) 1994-2000 |
| * the Initial Developer. All Rights Reserved. |
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| * Contributor(s): |
| * |
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| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
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| * ***** END LICENSE BLOCK ***** */ |
| |
| #ifndef _ALGHMAC_H_ |
| #define _ALGHMAC_H_ |
| |
| typedef struct HMACContextStr HMACContext; |
| |
| SEC_BEGIN_PROTOS |
| |
| /* destroy HMAC context */ |
| extern void |
| HMAC_Destroy(HMACContext *cx, PRBool freeit); |
| |
| /* create HMAC context |
| * hash_obj hash object from SECRawHashObjects[] |
| * secret the secret with which the HMAC is performed. |
| * secret_len the length of the secret. |
| * isFIPS true if conforming to FIPS 198. |
| * |
| * NULL is returned if an error occurs. |
| */ |
| extern HMACContext * |
| HMAC_Create(const SECHashObject *hash_obj, const unsigned char *secret, |
| unsigned int secret_len, PRBool isFIPS); |
| |
| /* like HMAC_Create, except caller allocates HMACContext. */ |
| SECStatus |
| HMAC_Init(HMACContext *cx, const SECHashObject *hash_obj, |
| const unsigned char *secret, unsigned int secret_len, PRBool isFIPS); |
| |
| /* reset HMAC for a fresh round */ |
| extern void |
| HMAC_Begin(HMACContext *cx); |
| |
| /* update HMAC |
| * cx HMAC Context |
| * data the data to perform HMAC on |
| * data_len the length of the data to process |
| */ |
| extern void |
| HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len); |
| |
| /* Finish HMAC -- place the results within result |
| * cx HMAC context |
| * result buffer for resulting hmac'd data |
| * result_len where the resultant hmac length is stored |
| * max_result_len maximum possible length that can be stored in result |
| */ |
| extern SECStatus |
| HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len, |
| unsigned int max_result_len); |
| |
| /* clone a copy of the HMAC state. this is usefult when you would |
| * need to keep a running hmac but also need to extract portions |
| * partway through the process. |
| */ |
| extern HMACContext * |
| HMAC_Clone(HMACContext *cx); |
| |
| SEC_END_PROTOS |
| |
| #endif |
