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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