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/* 
// 
//  Purpose:
//     Cryptography Primitive.
//     Hash Message Authentication Code
//     Internal Definitions and Internal Functions Prototypes
// 
// 
*/

#if !defined(_PCP_HMAC_H)
#define _PCP_HMAC_H

#include "pcphash.h"

/*
// HMAC context
*/
struct _cpHMAC {
   IppCtxId idCtx;               /* HMAC identifier   */
   Ipp8u ipadKey[MBS_HASH_MAX];  /* inner padding key */
   Ipp8u opadKey[MBS_HASH_MAX];  /* outer padding key */
   IppsHashState hashCtx;        /* hash context      */
};

/* accessors */
#define HMAC_CTX_ID(stt)   ((stt)->idCtx)
#define HASH_CTX(stt)      ((stt)->hashCtx)
#define HMAC_VALID_ID(stt) (HMAC_CTX_ID((stt))==idCtxHMAC)

#define IPAD            (0x36)   /* inner padding value */
#define OPAD            (0x5C)   /* outer padding value */

#endif /* _PCP_HMAC_H */