cc2538 AES-CBC

Driver for the cc2538 AES-CBC mode of the security core. More...

Files
file	cbc.c
	Implementation of the cc2538 AES-CBC driver.
file	cbc.h
	Header file for the cc2538 AES-CBC driver.

AES-CBC constants
#define	CBC_IV_LEN   AES_IV_LEN

AES-CBC functions
uint8_t	cbc_crypt_start (uint8_t encrypt, uint8_t key_area, const void *iv, const void *mdata_in, void *mdata_out, uint16_t mdata_len, struct process *process)
	Starts a CBC crypto operation. More...
int8_t	cbc_crypt_check_status (void)
	Checks the status of the CBC crypto operation. More...

Detailed Description

Driver for the cc2538 AES-CBC mode of the security core.

Function Documentation

int8_t cbc_crypt_check_status

(

void

)

Checks the status of the CBC crypto operation.

Returns

CRYPTO_PENDING if operation still pending, CRYPTO_SUCCESS if successful, or CRYPTO/AES/CBC error code

Note

This function must be called only after cbc_crypt_start().

Definition at line 60 of file cbc.c.

References aes_auth_crypt_check_status(), aes_auth_crypt_get_result(), and NULL.

uint8_t cbc_crypt_start	(	uint8_t	encrypt,
		uint8_t	key_area,
		const void *	iv,
		const void *	mdata_in,
		void *	mdata_out,
		uint16_t	mdata_len,
		struct process *	process
	)

Starts a CBC crypto operation.

Parameters

encrypt	true to encrypt, or false to decrypt
key_area	Area in Key RAM where the key is stored (0 to AES_KEY_AREAS - 1)
iv	Pointer to 128-bit initialization vector
mdata_in	Pointer to input message in SRAM
mdata_out	Pointer to output message in SRAM (may be mdata_in)
mdata_len	Length of message in octets
process	Process to be polled upon completion of the operation, or NULL

Returns

CRYPTO_SUCCESS if successful, or CRYPTO/AES/CBC error code

Definition at line 45 of file cbc.c.

References AES_AES_CTRL_CBC, AES_AES_CTRL_DIRECTION_ENCRYPT, aes_auth_crypt_start(), and NULL.