/********************************************************************************/
/*										*/
/*		DRBG with a behavior according to SP800-90A			*/
/*			     Written by Ken Goldman				*/
/*		       IBM Thomas J. Watson Research Center			*/
/*            $Id: CryptRand_fp.h 1047 2017-07-20 18:27:34Z kgoldman $		*/
/*										*/
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/********************************************************************************/

#ifndef CRYPTRAND_FP_H
#define CRYPTRAND_FP_H

BOOL
DRBG_GetEntropy(
		UINT32           requiredEntropy,   // IN: requested number of bytes of full
		//     entropy
		BYTE            *entropy            // OUT: buffer to return collected entropy
		);
void
IncrementIv(
	    DRBG_IV         *iv
	    );
void
EncryptDRBG(
	    BYTE                *dOut,
	    UINT32               dOutBytes,
	    DRBG_KEY_SCHEDULE   *keySchedule,
	    DRBG_IV             *iv,
	    UINT32              *lastValue      // Points to the last output value
	    );
void
DRBG_Update(
	    DRBG_STATE          *drbgState,     // IN:OUT state to update
	    DRBG_KEY_SCHEDULE   *keySchedule,   // IN: the key schedule (optional)
	    DRBG_SEED           *providedData   // IN: additional data
	    );
BOOL
DRBG_Reseed(
	    DRBG_STATE          *drbgState,         // IN: the state to update
	    DRBG_SEED           *providedEntropy,   // IN: entropy
	    DRBG_SEED           *additionalData     // IN:
	    );
BOOL
DRBG_SelfTest(
	      void
	      );
LIB_EXPORT TPM_RC
CryptRandomStir(
		UINT32            additionalDataSize,
		BYTE            *additionalData
		);
LIB_EXPORT UINT16
CryptRandomGenerate(
		    INT32            randomSize,
		    BYTE            *buffer
		    );
LIB_EXPORT BOOL
DRBG_InstantiateSeededKdf(
			  KDF_STATE       *state,         // IN: buffer to hold the state
			  TPM_ALG_ID       hashAlg,       // IN: hash algorithm
			  TPM_ALG_ID       kdf,           // IN: the KDF to use
			  TPM2B           *seed,          // IN: the seed to use
			  const TPM2B     *label,         // IN: a label for the generation process.
			  TPM2B           *context,       // IN: the context value
			  UINT32           limit          // IN: Maximum number of bits from the KDF
			  );
LIB_EXPORT void
DRBG_AdditionalData(
		    DRBG_STATE      *drbgState,     // IN:OUT state to update
		    TPM2B           *additionalData // IN: value to incorporate
		    );
LIB_EXPORT BOOL
DRBG_InstantiateSeeded(
		       DRBG_STATE      *drbgState,     // IN: buffer to hold the state
		       const TPM2B     *seed,          // IN: the seed to use
		       const TPM2B     *purpose,       // IN: a label for the generation process.
		       const TPM2B     *name,          // IN: name of the object
		       const TPM2B     *additional     // IN: additional data
		       );
LIB_EXPORT BOOL
CryptRandStartup(
		 void
		 );
LIB_EXPORT BOOL
CryptRandInit(
	      void
	      );
LIB_EXPORT UINT16
DRBG_Generate(
	      RAND_STATE      *state,
	      BYTE            *random,        // OUT: buffer to receive the random values
	      UINT16           randomSize     // IN: the number of bytes to generate
	      );
LIB_EXPORT BOOL
DRBG_Instantiate(
		 DRBG_STATE      *drbgState,         // OUT: the instantiated value
		 UINT16           pSize,             // IN: Size of personalization string
		 BYTE            *personalization    // IN: The personalization string
		 );
LIB_EXPORT TPM_RC
DRBG_Uninstantiate(
		   DRBG_STATE      *drbgState      // IN/OUT: working state to erase
		   );
LIB_EXPORT NUMBYTES
CryptRandMinMax(
		BYTE            *out,
		UINT32           max,
		UINT32           min,
		RAND_STATE      *rand
		);


#endif
