aes_cmac.h File Reference

AES-CMAC API. More...

Go to the source code of this file.

Functions
int	zpc_aes_cmac_alloc (struct zpc_aes_cmac **ctx)
int	zpc_aes_cmac_set_key (struct zpc_aes_cmac *ctx, struct zpc_aes_key *key)
int	zpc_aes_cmac_sign (struct zpc_aes_cmac *ctx, unsigned char *mac, size_t maclen, const unsigned char *msg, size_t msglen)
int	zpc_aes_cmac_verify (struct zpc_aes_cmac *ctx, const unsigned char *mac, size_t maclen, const unsigned char *msg, size_t msglen)
void	zpc_aes_cmac_free (struct zpc_aes_cmac **ctx)

Detailed Description

AES-CMAC API.

Message authentication API for the Cipher-based Message Authentication Code (CMAC) [3] based on the Advanced Encryption Standard (AES) block cipher [1] .

Definition in file aes_cmac.h.

Function Documentation

zpc_aes_cmac_alloc()

int zpc_aes_cmac_alloc

(

struct zpc_aes_cmac **

ctx

)

Allocate a new context for an AES-CMAC operation.

Parameters

[in,out]

ctx

AES-CMAC context

Returns

0 on success. Otherwise, a non-zero error code is returned.

zpc_aes_cmac_set_key()

int zpc_aes_cmac_set_key	(	struct zpc_aes_cmac *	ctx,
		struct zpc_aes_key *	key )

Set the key to be used in the context of an AES-CMAC operation.

Parameters

[in,out]	ctx	AES-CMAC context
[in]	key	AES key

Returns

0 on success. Otherwise, a non-zero error code is returned.

zpc_aes_cmac_sign()

int zpc_aes_cmac_sign	(	struct zpc_aes_cmac *	ctx,
		unsigned char *	mac,
		size_t	maclen,
		const unsigned char *	msg,
		size_t	msglen )

Do an AES-CMAC signing operation.

Parameters

[in,out]	ctx	AES-CMAC context
[out]	mac	message authentication code
[in]	maclen	message authentication code length [bytes]
[in]	msg	message
[in]	msglen	message length [bytes]

Returns

0 on success. Otherwise, a non-zero error code is returned.

zpc_aes_cmac_verify()

int zpc_aes_cmac_verify	(	struct zpc_aes_cmac *	ctx,
		const unsigned char *	mac,
		size_t	maclen,
		const unsigned char *	msg,
		size_t	msglen )

Do an AES-CMAC verify operation.

Parameters

[in,out]	ctx	AES-CMAC context
[in]	mac	message authentication code
[in]	maclen	message authentication code length [bytes]
[in]	msg	message
[in]	msglen	message length [bytes]

Returns

0 on success. Otherwise, a non-zero error code is returned.

zpc_aes_cmac_free()

void zpc_aes_cmac_free

(

struct zpc_aes_cmac **

ctx

)

Free an AES-CMAC context.

Parameters

[in,out]

ctx

AES-CMAC context