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97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _ALGHMAC_H_
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#define _ALGHMAC_H_
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typedef struct HMACContextStr HMACContext;
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SEC_BEGIN_PROTOS
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/* destroy HMAC context */
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extern void
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HMAC_Destroy(HMACContext *cx, PRBool freeit);
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/* create HMAC context
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* hash_obj hash object from SECRawHashObjects[]
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* secret the secret with which the HMAC is performed.
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* secret_len the length of the secret.
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* isFIPS true if conforming to FIPS 198.
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*
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* NULL is returned if an error occurs.
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*/
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extern HMACContext *
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HMAC_Create(const SECHashObject *hash_obj, const unsigned char *secret,
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unsigned int secret_len, PRBool isFIPS);
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/* like HMAC_Create, except caller allocates HMACContext. */
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SECStatus
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HMAC_Init(HMACContext *cx, const SECHashObject *hash_obj,
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const unsigned char *secret, unsigned int secret_len, PRBool isFIPS);
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/* reset HMAC for a fresh round */
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extern void
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HMAC_Begin(HMACContext *cx);
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/* update HMAC
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* cx HMAC Context
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* data the data to perform HMAC on
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* data_len the length of the data to process
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*/
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extern void
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HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len);
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/* Finish HMAC -- place the results within result
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* cx HMAC context
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* result buffer for resulting hmac'd data
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* result_len where the resultant hmac length is stored
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* max_result_len maximum possible length that can be stored in result
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*/
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extern SECStatus
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HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len,
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unsigned int max_result_len);
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/* clone a copy of the HMAC state. this is usefult when you would
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* need to keep a running hmac but also need to extract portions
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* partway through the process.
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*/
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extern HMACContext *
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HMAC_Clone(HMACContext *cx);
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SEC_END_PROTOS
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#endif
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