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/*____________________________________________________________________________
pgpHMAC.h
Copyright (C) 1997 Network Associates Inc. and affiliated companies.
All rights reserved.
$Id: pgpHMAC.h,v 1.3 1999/03/10 02:51:38 heller Exp $
____________________________________________________________________________*/
#ifndef Included_pgpHMAC_h /* [ */
#define Included_pgpHMAC_h
#include "pgpPubTypes.h"
#include "pgpMemoryMgr.h"
PGP_BEGIN_C_DECLARATIONS
#if PRAGMA_IMPORT_SUPPORTED
#pragma import on
#endif
/*____________________________________________________________________________
Create a new HMAC of the specified algorithm.
If the algorithm is not available then kPGPError_AlgorithmNotAvailable is
returned.
____________________________________________________________________________*/
PGPError PGPNewHMACContext( PGPMemoryMgrRef memoryMgr,
PGPHashAlgorithm algorithm,
PGPByte * secret,
PGPSize secretLen,
PGPHMACContextRef * outRef );
/*____________________________________________________________________________
Any existing intermediate HMAC is lost.
____________________________________________________________________________*/
PGPError PGPFreeHMACContext( PGPHMACContextRef ref );
/*____________________________________________________________________________
Reset an HMAC as if it had been created anew. Any existing intermediate
hash is lost.
____________________________________________________________________________*/
PGPError PGPResetHMAC( PGPHMACContextRef ref );
/*____________________________________________________________________________
Continue the HMAC, accumulating an intermediate result
____________________________________________________________________________*/
PGPError PGPContinueHMAC( PGPHMACContextRef ref,
const void *in, PGPSize numBytes );
/*____________________________________________________________________________
Finalize the HMAC, depositing the result into 'hmacOut'.
This size of the output will be the same size as the hash
algorithm output.
____________________________________________________________________________*/
PGPError PGPFinalizeHMAC( PGPHMACContextRef ref, void *hmacOut );
#if PRAGMA_IMPORT_SUPPORTED
#pragma import reset
#endif
PGP_END_C_DECLARATIONS
#endif /* ] Included_pgpHMAC_h */
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