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/*____________________________________________________________________________
Copyright (C) 2002 PGP Corporation
All rights reserved.
$Id: pgpHMAC.h,v 1.6 2002/08/06 20:11:16 dallen Exp $
____________________________________________________________________________*/
#ifndef Included_pgpHMAC_h /* [ */
#define Included_pgpHMAC_h
#include "pgpPubTypes.h"
PGP_BEGIN_C_DECLARATIONS
/*____________________________________________________________________________
Create a new HMAC of the specified algorithm.
If the algorithm is not available then kPGPError_AlgorithmNotAvailable is
returned.
____________________________________________________________________________*/
PGPError PGPNewHMACContext( PGPContextRef context,
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 );
PGP_END_C_DECLARATIONS
#endif /* ] Included_pgpHMAC_h */
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