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- /* ***** 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
- * 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 the Initial Developer are Copyright (C) 1994-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** 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
-