AES128_CMAC

Implementation of the AES128 CMAC hashing function. More...

Detailed Description

Implementation of the AES128 CMAC hashing function.

Files
file	aes128_cmac.h
	AES128_CMAC interface definition.

Data Structures
struct	aes128_cmac_context_t
	AES128_CMAC calculation context. More...

Macros
#define	AES128_CMAC_BLOCK_SIZE   16
	Length of AES128_CMAC block in bytes.

Functions
int	aes128_cmac_init (aes128_cmac_context_t *ctx, const uint8_t *key, uint8_t key_size)
	Initialize AES128 CMAC message digest context.
void	aes128_cmac_update (aes128_cmac_context_t *ctx, const void *data, size_t len)
	Update the AES128 CMAC context with a portion of the message being hashed.
void	aes128_cmac_final (aes128_cmac_context_t *ctx, void *digest)
	Finalizes the CMAC message digest.

Macro Definition Documentation

AES128_CMAC_BLOCK_SIZE

#define AES128_CMAC_BLOCK_SIZE   16

Length of AES128_CMAC block in bytes.

Definition at line 35 of file aes128_cmac.h.

Function Documentation

aes128_cmac_final()

void aes128_cmac_final	(	aes128_cmac_context_t *	ctx,
		void *	digest
	)

Finalizes the CMAC message digest.

Parameters

[in]	ctx	Pointer to the AES128 CMAC context
[out]	digest	Result location

aes128_cmac_init()

int aes128_cmac_init	(	aes128_cmac_context_t *	ctx,
		const uint8_t *	key,
		uint8_t	key_size
	)

Initialize AES128 CMAC message digest context.

Parameters

[in]	ctx	Pointer to the AES128 CMAC context to initialize
[in]	key	Key to be set
[in]	key_size	Size of the key

Returns

CIPHER_INIT_SUCCESS if the initialization was successful. CIPHER_ERR_INVALID_KEY_SIZE if the key size is not valid.

aes128_cmac_update()

void aes128_cmac_update	(	aes128_cmac_context_t *	ctx,
		const void *	data,
		size_t	len
	)

Update the AES128 CMAC context with a portion of the message being hashed.

Parameters

[in]	ctx	Pointer to the AES128 CMAC context to update
[in]	data	Input data
[in]	len	Length of data