crypto_internal-cipher.c File Reference

Crypto wrapper for internal crypto implementation - Cipher wrappers. More...

#include "includes.h"
#include "common.h"
#include "crypto.h"
#include "aes.h"
#include "des_i.h"

Data Structures
struct	crypto_cipher

Functions
struct crypto_cipher *	crypto_cipher_init (enum crypto_cipher_alg alg, const u8 *iv, const u8 *key, size_t key_len)
	Initialize block/stream cipher function. More...
int	crypto_cipher_encrypt (struct crypto_cipher *ctx, const u8 *plain, u8 *crypt, size_t len)
	Cipher encrypt. More...
int	crypto_cipher_decrypt (struct crypto_cipher *ctx, const u8 *crypt, u8 *plain, size_t len)
	Cipher decrypt. More...
void	crypto_cipher_deinit (struct crypto_cipher *ctx)
	Free cipher context. More...

Detailed Description

Crypto wrapper for internal crypto implementation - Cipher wrappers.

Function Documentation

int crypto_cipher_decrypt	(	struct crypto_cipher *	ctx,
		const u8 *	crypt,
		u8 *	plain,
		size_t	len
	)

Cipher decrypt.

Parameters

ctx	Context pointer from crypto_cipher_init()
crypt	Ciphertext to decrypt
plain	Resulting plaintext
len	Length of the cipher text

Returns

0 on success, -1 on failure

This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.

void crypto_cipher_deinit

(

struct crypto_cipher *

ctx

)

Free cipher context.

Parameters

ctx	Context pointer from crypto_cipher_init()

This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.

int crypto_cipher_encrypt	(	struct crypto_cipher *	ctx,
		const u8 *	plain,
		u8 *	crypt,
		size_t	len
	)

Cipher encrypt.

Parameters

ctx	Context pointer from crypto_cipher_init()
plain	Plaintext to cipher
crypt	Resulting ciphertext
len	Length of the plaintext

Returns

0 on success, -1 on failure

This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.

struct crypto_cipher* crypto_cipher_init	(	enum crypto_cipher_alg	alg,
		const u8 *	iv,
		const u8 *	key,
		size_t	key_len
	)

Initialize block/stream cipher function.

Parameters

alg	Cipher algorithm
iv	Initialization vector for block ciphers or NULL for stream ciphers
key	Cipher key
key_len	Length of key in bytes

Returns

Pointer to cipher context to use with other cipher functions or NULL on failure

This function is only used with internal TLSv1 implementation (CONFIG_TLS=internal). If that is not used, the crypto wrapper does not need to implement this.