ecb.h File Reference

Electronic code book mode of operation for block ciphers. More...

Detailed Description

Electronic code book mode of operation for block ciphers.

Author

Freie Universitaet Berlin, Computer Systems & Telematics

Nico von Geyso nico..nosp@m.geys.nosp@m.o@fu-.nosp@m.berl.nosp@m.in.de

Definition in file ecb.h.

#include "crypto/ciphers.h"

Include dependency graph for ecb.h:

Go to the source code of this file.

int	cipher_encrypt_ecb (const cipher_t *cipher, const uint8_t *input, size_t length, uint8_t *output)
	Encrypt data of arbitrary length in ecb mode.
int	cipher_decrypt_ecb (const cipher_t *cipher, const uint8_t *input, size_t length, uint8_t *output)
	Decrypts data of arbitrary length in ecb mode.

Function Documentation

cipher_decrypt_ecb()

int cipher_decrypt_ecb	(	const cipher_t *	cipher,
		const uint8_t *	input,
		size_t	length,
		uint8_t *	output
	)

Decrypts data of arbitrary length in ecb mode.

Parameters

cipher	Already initialized cipher struct
input	pointer to input data to decrypt
length	length of the input data
output	pointer to allocated memory for plaintext data. It has to be of size length.

Returns

Length of decrypted data on a successful decryption

A negative error code if something went wrong

cipher_encrypt_ecb()

int cipher_encrypt_ecb	(	const cipher_t *	cipher,
		const uint8_t *	input,
		size_t	length,
		uint8_t *	output
	)

Encrypt data of arbitrary length in ecb mode.

Caution each identical block results in an identical encrypted block. Normally you do not want to use ECB.

Parameters

cipher	Already initialized cipher struct
input	pointer to input data to encrypt
length	length of the input data
output	pointer to allocated memory for encrypted data. It has to be of size data_len + BLOCK_SIZE - data_len % BLOCK_SIZE.

Returns

Length of encrypted data on a successful encryption

A negative error code if something went wrong