kaa_aes_rsa.h File Reference

#include <kaa_error.h>
#include <mbedtls/pk.h>
#include <mbedtls/entropy.h>
#include <mbedtls/ctr_drbg.h>
#include <mbedtls/md.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Macros
#define	KAA_SESSION_KEY_LENGTH   16

Functions
int	init_aes_key (unsigned char *key, size_t bytes)
	Generate AES key. More...
kaa_error_t	aes_encrypt_decrypt (int mode, const uint8_t *input, size_t input_size, uint8_t *output, const uint8_t *key)
	Encrypt or decrypt with AES key. More...
kaa_error_t	aes_encrypt_decrypt_block (int mode, const uint8_t *input, uint8_t *output, const uint8_t *key)
	Encrypt or decrypt block of size KAA_SESSION_KEY_LENGTH with AES key. More...
int	rsa_sign (mbedtls_pk_context *pk, const uint8_t *input, size_t input_size, uint8_t *output, size_t *output_size)
	Create RSA signature. More...
kaa_error_t	rsa_encrypt (const uint8_t *key, size_t key_size, const uint8_t *input, size_t input_len, uint8_t *output)
	Encrypt data with pubcic RSA key. More...

Macro Definition Documentation

#define KAA_SESSION_KEY_LENGTH   16

Function Documentation

kaa_error_t aes_encrypt_decrypt	(	int	mode,
		const uint8_t *	input,
		size_t	input_size,
		uint8_t *	output,
		const uint8_t *	key
	)

Encrypt or decrypt with AES key.

Parameters

[in]	mode	Mode of encryption
[in]	input	Pointer to input data
[in]	input_size	Size of input data
[out]	output	Pointer to output data
[in]	key	Pointer to AES key

kaa_error_t aes_encrypt_decrypt_block	(	int	mode,
		const uint8_t *	input,
		uint8_t *	output,
		const uint8_t *	key
	)

Encrypt or decrypt block of size KAA_SESSION_KEY_LENGTH with AES key.

Parameters

[in]	mode	Mode of encryption. MBEDTLS_AES_ENCRYPT to encryption and MBEDTLS_AES_DECTYPT to decryption.
[in]	input	Pointer to input data (of size KAA_SESSION_KEY_LENGTH)
[out]	output	Pointer to output data
[in]	key	Pointer to AES key

int init_aes_key	(	unsigned char *	key,
		size_t	bytes
	)

Generate AES key.

Parameters

[out]	key	Generated AES key
[in]	bytes	Size of the AES key

Returns

The error code.

Return values

0

Success.

kaa_error_t rsa_encrypt	(	const uint8_t *	key,
		size_t	key_size,
		const uint8_t *	input,
		size_t	input_len,
		uint8_t *	output
	)

Encrypt data with pubcic RSA key.

Parameters

[in]	key	Public RSA key.
[in]	key_size	Size of public RSA key.
[in]	input	Input data.
[in]	input_len	Size of input_data.
[out]	output	Pointer to buffer where the encrypted data will be stored.

Returns

The error code.

Return values

KAA_ERR_NONE	Success
KAA_ERR_INVALID_PUBKEY	The key is invalid.
KAA_ERR_GENERIC	Encryption has failed.

int rsa_sign	(	mbedtls_pk_context *	pk,
		const uint8_t *	input,
		size_t	input_size,
		uint8_t *	output,
		size_t *	output_size
	)

Create RSA signature.

Parameters

[in]	pk	Pointer to a pk structure
[in]	input	Pointer to input data
[in]	input_size	Size of input data
[out]	output	Pointer to RSA signature
[out]	output_size	Size of RSA signature