зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
3.0 KiB
C
91 строка
3.0 KiB
C
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* 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
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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#ifndef _ALGHMAC_H_
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#define _ALGHMAC_H_
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#include "secoid.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);
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/* create HMAC context
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* hash_alg the algorithm with which the HMAC is performed. This
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* should be, SEC_OID_MD5, SEC_OID_SHA1, or SEC_OID_MD2.
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* secret the secret with which the HMAC is performed.
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* secret_len the length of the secret, limited to at most 64 bytes.
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*
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* NULL is returned if an error occurs or the secret is > 64 bytes.
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*/
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extern HMACContext *
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HMAC_Create(SECOidTag hash_alg, const unsigned char *secret,
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unsigned int secret_len);
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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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