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70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/*
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* Copyright (C) 2015 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys_crypto
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* @{
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*
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* @file ecb.h
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* @brief Electronic code book mode of operation for block ciphers
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*
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* @author Freie Universitaet Berlin, Computer Systems & Telematics
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* @author Nico von Geyso <nico.geyso@fu-berlin.de>
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*/
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#ifndef CRYPTO_MODES_ECB_H
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#define CRYPTO_MODES_ECB_H
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#include "crypto/ciphers.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Encrypt data of arbitrary length in ecb mode. Caution each identical
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* block results in an identical encrypted block. Normally you do not
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* want to use ECB.
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*
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*
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* @param cipher Already initialized cipher struct
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* @param input pointer to input data to encrypt
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* @param length length of the input data
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* @param output pointer to allocated memory for encrypted data. It has to
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* be of size data_len + BLOCK_SIZE - data_len % BLOCK_SIZE.
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*
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* @return Length of encrypted data on a successful encryption
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* @return A negative error code if something went wrong
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*
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*/
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int cipher_encrypt_ecb(const cipher_t *cipher, const uint8_t *input,
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size_t length, uint8_t *output);
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/**
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* @brief Decrypts data of arbitrary length in ecb mode.
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*
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*
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* @param cipher Already initialized cipher struct
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* @param input pointer to input data to decrypt
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* @param length length of the input data
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* @param output pointer to allocated memory for plaintext data. It has to
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* be of size `length`.
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*
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* @return Length of decrypted data on a successful decryption
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* @return A negative error code if something went wrong
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*/
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int cipher_decrypt_ecb(const cipher_t *cipher, const uint8_t *input,
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size_t length, uint8_t *output);
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#ifdef __cplusplus
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}
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#endif
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#endif /* CRYPTO_MODES_ECB_H */
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/** @} */
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