TPMCmd/tpm/include/prototypes/CryptCmac_fp.h

/* Microsoft Reference Implementation for TPM 2.0
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/*(Auto)
    Automatically Generated by TpmPrototypes version 2.2 February 10, 2016 
    Date: Apr 10, 2017 Time: 03:17:47 PM  
*/

#ifndef    _CRYPTCMAC_FP_H_
#define    _CRYPTCMAC_FP_H_

#ifdef TPM_ALG_CMAC
//*** CryptCmacStart()
// This is the function to start the CMAC sequence operation. It initializes the
// dispatch functions for the data and end operations for CMAC and initializes the
// parameters that are used for the processing of data, including the key, key size
// and block cipher algorithm.
UINT16
CryptCmacStart(
    SMAC_STATE          *state,
    TPMU_PUBLIC_PARMS   *keyParms,
    TPM_ALG_ID           macAlg,
    TPM2B               *key
);

//*** CryptCmacData()
// This function is used to add data to the CMAC sequence computation. The function
// will XOR new data into the IV. If the buffer is full, and there is additional
// input data, the data is encrypted into the IV buffer, the new data is then
// XOR into the IV. When the data runs out, the function returns without encrypting
// even if the buffer is full. The last data block of a sequence will not be
// encrypted until the call to CryptCmacEnd(). This is to allow the proper subkey
// to be computed and applied before the last block is encrypted.
void
CryptCmacData(
    SMAC_STATES         *state,
    UINT32               size,
    const BYTE          *buffer
);

//*** CryptCmacEnd()
// This is the completion function for the CMAC. It does padding, if needed, and
// selects the subkey to be applied before the last block is encrypted.
UINT16
CryptCmacEnd(
    SMAC_STATES             *state,
    UINT32                   outSize,
    BYTE                    *outBuffer
);
#endif


#endif  // _CRYPTCMAC_FP_H_