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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     Hash Message Authentication Code
     46 //     Internal Definitions and Internal Functions Prototypes
     47 //
     48 //
     49 */
     50 
     51 #if !defined(_PCP_HMAC_H)
     52 #define _PCP_HMAC_H
     53 
     54 #include "pcphash.h"
     55 
     56 /*
     57 // HMAC context
     58 */
     59 struct _cpHMAC {
     60    IppCtxId idCtx;               /* HMAC identifier   */
     61    Ipp8u ipadKey[MBS_HASH_MAX];  /* inner padding key */
     62    Ipp8u opadKey[MBS_HASH_MAX];  /* outer padding key */
     63    IppsHashState hashCtx;        /* hash context      */
     64 };
     65 
     66 /* accessors */
     67 #define HMAC_CTX_ID(stt)   ((stt)->idCtx)
     68 #define HASH_CTX(stt)      ((stt)->hashCtx)
     69 #define HMAC_VALID_ID(stt) (HMAC_CTX_ID((stt))==idCtxHMAC)
     70 
     71 #define IPAD            (0x36)   /* inner padding value */
     72 #define OPAD            (0x5C)   /* outer padding value */
     73 
     74 #endif /* _PCP_HMAC_H */
     75