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     40 
     41 /*
     42 //
     43 //  Purpose:
     44 //     Cryptography Primitive.
     45 //     Ciper-based Message Authentication Code (CMAC) see SP800-38B
     46 //     Internal Definitions and Internal Functions Prototypes
     47 //
     48 */
     49 
     50 #if !defined(_PCP_CMAC_H)
     51 #define _PCP_CMAC_H
     52 
     53 #include "pcprij.h"
     54 
     55 
     56 /*
     57 // Rijndael128 based CMAC context
     58 */
     59 struct _cpAES_CMAC {
     60    IppCtxId idCtx;              /* CMAC  identifier              */
     61    int      index;              /* internal buffer entry (free)  */
     62    int      dummy[2];           /* align-16                      */
     63    Ipp8u    k1[MBS_RIJ128];     /* k1 subkey                     */
     64    Ipp8u    k2[MBS_RIJ128];     /* k2 subkey                     */
     65    Ipp8u    mBuffer[MBS_RIJ128];/* buffer                        */
     66    Ipp8u    mMAC[MBS_RIJ128];   /* intermediate digest           */
     67    __ALIGN16                    /* aligned AES context           */
     68    IppsRijndael128Spec mCipherCtx;
     69 };
     70 
     71 /* alignment */
     72 //#define CMACRIJ_ALIGNMENT (RIJ_ALIGNMENT)
     73 #define AESCMAC_ALIGNMENT  (RIJ_ALIGNMENT)
     74 
     75 /*
     76 // Useful macros
     77 */
     78 #define CMAC_ID(stt)      ((stt)->idCtx)
     79 #define CMAC_INDX(stt)    ((stt)->index)
     80 #define CMAC_K1(stt)      ((stt)->k1)
     81 #define CMAC_K2(stt)      ((stt)->k2)
     82 #define CMAC_BUFF(stt)    ((stt)->mBuffer)
     83 #define CMAC_MAC(stt)     ((stt)->mMAC)
     84 #define CMAC_CIPHER(stt)  ((stt)->mCipherCtx)
     85 
     86 /* valid context ID */
     87 #define VALID_AESCMAC_ID(ctx) (CMAC_ID((ctx))==idCtxCMAC)
     88 
     89 #endif /* _PCP_CMAC_H */
     90