aes_ccm.h File Reference

AES-CCM API. More...

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Functions
int	zpc_aes_ccm_alloc (struct zpc_aes_ccm **ctx)
int	zpc_aes_ccm_set_key (struct zpc_aes_ccm *ctx, struct zpc_aes_key *key)
int	zpc_aes_ccm_set_iv (struct zpc_aes_ccm *ctx, const unsigned char *iv, size_t ivlen)
int	zpc_aes_ccm_encrypt (struct zpc_aes_ccm *ctx, unsigned char *ct, unsigned char *mac, size_t maclen, const unsigned char *aad, size_t aadlen, const unsigned char *pt, size_t ptlen)
int	zpc_aes_ccm_decrypt (struct zpc_aes_ccm *ctx, unsigned char *pt, const unsigned char *mac, size_t maclen, const unsigned char *aad, size_t aadlen, const unsigned char *ct, size_t ctlen)
void	zpc_aes_ccm_free (struct zpc_aes_ccm **ctx)

Detailed Description

AES-CCM API.

Authenticated encryption API for the Advanced Encryption Standard (AES) block cipher [1] in Counter with CBC-MAC mode of operation [2] .

Definition in file aes_ccm.h.

Function Documentation

zpc_aes_ccm_alloc()

int zpc_aes_ccm_alloc

(

struct zpc_aes_ccm **

ctx

)

Allocate a new context for an AES-CCM operation.

Parameters

[in,out]

ctx

AES-CCM context

Returns

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

zpc_aes_ccm_set_key()

int zpc_aes_ccm_set_key	(	struct zpc_aes_ccm *	ctx,
		struct zpc_aes_key *	key )

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

Parameters

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

Returns

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

zpc_aes_ccm_set_iv()

int zpc_aes_ccm_set_iv	(	struct zpc_aes_ccm *	ctx,
		const unsigned char *	iv,
		size_t	ivlen )

Set the initialization vector to be used in the context of an AES-CCM operation.

Parameters

[in,out]	ctx	AES-CCM context
[in]	iv	7-13 byte initialization vector
[in]	ivlen	initialization vector length [bytes]

Returns

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

zpc_aes_ccm_encrypt()

int zpc_aes_ccm_encrypt	(	struct zpc_aes_ccm *	ctx,
		unsigned char *	ct,
		unsigned char *	mac,
		size_t	maclen,
		const unsigned char *	aad,
		size_t	aadlen,
		const unsigned char *	pt,
		size_t	ptlen )

Do an AES-CCM authenticated encryption operation.

Parameters

[in,out]	ctx	AES-CCM context
[out]	ct	ciphertext
[out]	mac	message authentication code
[in]	maclen	message authentication code length [bytes]
[in]	aad	additional authenticated data
[in]	aadlen	additional authenticated data length [bytes]
[in]	pt	plaintext
[in]	ptlen	plaintext length [bytes]

Returns

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

zpc_aes_ccm_decrypt()

int zpc_aes_ccm_decrypt	(	struct zpc_aes_ccm *	ctx,
		unsigned char *	pt,
		const unsigned char *	mac,
		size_t	maclen,
		const unsigned char *	aad,
		size_t	aadlen,
		const unsigned char *	ct,
		size_t	ctlen )

Do an AES-CCM authenticated decryption operation.

Parameters

[in,out]	ctx	AES-CCM context
[out]	pt	plaintext
[in]	mac	message authentication code
[in]	maclen	message authentication code length [bytes]
[in]	aad	additional authenticated data
[in]	aadlen	additional authenticated data length [bytes]
[in]	ct	ciphertext
[in]	ctlen	ciphertext length [bytes]

Returns

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

zpc_aes_ccm_free()

void zpc_aes_ccm_free

(

struct zpc_aes_ccm **

ctx

)

Free an AES-CCM context.

Parameters

[in,out]

ctx

AES-CCM context