Dcp_driver_hash

Data Structures
struct	_dcp_hash_ctx_t
	Storage type used to save hash context. More...

Macros
#define	DCP_HASH_CAVP_COMPATIBLE
#define	DCP_SHA_BLOCK_SIZE   128U
	DCP HASH Context size.
#define	DCP_HASH_BLOCK_SIZE   DCP_SHA_BLOCK_SIZE
#define	DCP_HASH_CTX_SIZE   64
	DCP HASH Context size.

Typedefs
typedef enum _dcp_hash_algo_t	dcp_hash_algo_t
	Supported cryptographic block cipher functions for HASH creation.
typedef struct _dcp_hash_ctx_t	dcp_hash_ctx_t
	Storage type used to save hash context.

Enumerations
enum	_dcp_hash_algo_t { kDCP_Sha1 , kDCP_Sha256 , kDCP_Crc32 }
	Supported cryptographic block cipher functions for HASH creation. More...

Functions
status_t	DCP_HASH_Init (DCP_Type *base, dcp_handle_t *handle, dcp_hash_ctx_t *ctx, dcp_hash_algo_t algo)
	Initialize HASH context.
status_t	DCP_HASH_Update (DCP_Type *base, dcp_hash_ctx_t *ctx, const uint8_t *input, size_t inputSize)
	Add data to current HASH.
status_t	DCP_HASH_Finish (DCP_Type *base, dcp_hash_ctx_t *ctx, uint8_t *output, size_t *outputSize)
	Finalize hashing.
status_t	DCP_HASH (DCP_Type *base, dcp_handle_t *handle, dcp_hash_algo_t algo, const uint8_t *input, size_t inputSize, uint8_t *output, size_t *outputSize)
	Create HASH on given data.

Detailed Description

Macro Definition Documentation

DCP_HASH_BLOCK_SIZE

#define DCP_HASH_BLOCK_SIZE   DCP_SHA_BLOCK_SIZE

DCP hash block size

DCP_SHA_BLOCK_SIZE

#define DCP_SHA_BLOCK_SIZE   128U

DCP HASH Context size.

internal buffer block size

Enumeration Type Documentation

_dcp_hash_algo_t

enum _dcp_hash_algo_t

Supported cryptographic block cipher functions for HASH creation.

Enumerator
kDCP_Sha1	SHA_1
kDCP_Sha256	SHA_256
kDCP_Crc32	CRC_32

Function Documentation

DCP_HASH()

status_t DCP_HASH	(	DCP_Type *	base,
		dcp_handle_t *	handle,
		dcp_hash_algo_t	algo,
		const uint8_t *	input,
		size_t	inputSize,
		uint8_t *	output,
		size_t *	outputSize
	)

Create HASH on given data.

Perform the full SHA or CRC32 in one function call. The function is blocking.

Parameters

	base	DCP peripheral base address
	handle	Handle used for the request.
	algo	Underlaying algorithm to use for hash computation.
	input	Input data
	inputSize	Size of input data in bytes
[out]	output	Output hash data
[out]	outputSize	Output parameter storing the size of the output hash in bytes

Returns

Status of the one call hash operation.

brief Create HASH on given data

Perform the full SHA or CRC32 in one function call. The function is blocking.

param base DCP peripheral base address param handle Handle used for the request. param algo Underlaying algorithm to use for hash computation. param input Input data param inputSize Size of input data in bytes param[out] output Output hash data param[out] outputSize Output parameter storing the size of the output hash in bytes return Status of the one call hash operation.

DCP_HASH_Finish()

status_t DCP_HASH_Finish	(	DCP_Type *	base,
		dcp_hash_ctx_t *	ctx,
		uint8_t *	output,
		size_t *	outputSize
	)

Finalize hashing.

Outputs the final hash (computed by DCP_HASH_Update()) and erases the context.

Parameters

	base	DCP peripheral base address
[in,out]	ctx	Input hash context
[out]	output	Output hash data
[in,out]	outputSize	Optional parameter (can be passed as NULL). On function entry, it specifies the size of output[] buffer. On function return, it stores the number of updated output bytes.

Returns

Status of the hash finish operation

brief Finalize hashing

Outputs the final hash (computed by DCP_HASH_Update()) and erases the context.

param[in,out] ctx Input hash context param[out] output Output hash data param[in,out] outputSize Optional parameter (can be passed as NULL). On function entry, it specifies the size of output[] buffer. On function return, it stores the number of updated output bytes. return Status of the hash finish operation

DCP_HASH_Init()

status_t DCP_HASH_Init	(	DCP_Type *	base,
		dcp_handle_t *	handle,
		dcp_hash_ctx_t *	ctx,
		dcp_hash_algo_t	algo
	)

Initialize HASH context.

This function initializes the HASH.

Parameters

	base	DCP peripheral base address
	handle	Specifies the DCP channel used for hashing.
[out]	ctx	Output hash context
	algo	Underlaying algorithm to use for hash computation.

Returns

Status of initialization

brief Initialize HASH context

This function initializes the HASH.

param base DCP peripheral base address param handle Specifies the DCP channel used for hashing. param[out] ctx Output hash context param algo Underlaying algorithm to use for hash computation. return Status of initialization

DCP_HASH_Update()

status_t DCP_HASH_Update	(	DCP_Type *	base,
		dcp_hash_ctx_t *	ctx,
		const uint8_t *	input,
		size_t	inputSize
	)

Add data to current HASH.

Add data to current HASH. This can be called repeatedly with an arbitrary amount of data to be hashed. The functions blocks. If it returns kStatus_Success, the running hash has been updated (DCP has processed the input data), so the memory at the input pointer can be released back to system. The DCP context buffer is updated with the running hash and with all necessary information to support possible context switch.

Parameters

	base	DCP peripheral base address
[in,out]	ctx	HASH context
	input	Input data
	inputSize	Size of input data in bytes

Returns

Status of the hash update operation

brief Add data to current HASH

Add data to current HASH. This can be called repeatedly with an arbitrary amount of data to be hashed. The functions blocks. If it returns kStatus_Success, the running hash has been updated (DCP has processed the input data), so the memory at ref input pointer can be released back to system. The DCP context buffer is updated with the running hash and with all necessary information to support possible context switch.

param base DCP peripheral base address param[in,out] ctx HASH context param input Input data param inputSize Size of input data in bytes return Status of the hash update operation