86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/* noekeon.h */
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/*
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This file is part of the AVR-Crypto-Lib.
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Copyright (C) 2006-2015 Daniel Otte (bg@nerilex.org)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef NOEKEON_H_
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#define NOEKEON_H_
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/**
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* \file noekeon.h
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* \author Daniel Otte
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* \email bg@nerilex.org
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* \date 2008-04-11
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* \license GPLv3 or later
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* \brief Implementation of the Noekeon block cipher
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* \ingroup Noekeon
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* This is an implementation of the Noekeon block cipher.
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* For more details on Noekeon see http://gro.noekeon.org/
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*/
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#include <stdint.h>
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/** \typedef noekeon_ctx_t
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* \brief holds key data for indirect mode
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*
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* A variable of this type may hold the key data for the indirect mode.
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* For direct mode simply pass the key directly to the encryption or
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* decryption function.
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*/
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typedef uint8_t noekeon_ctx_t[16];
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/** \fn void noekeon_enc(void *buffer, const void *key)
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* \brief noekeon encrytion funtion
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*
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* This function encrypts a block (64 bit = 8 byte) with the noekeon encrytion
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* algorithm. Due to the two modes of noekeon (direct mode and indirect mode)
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* the second parameter either points directly to the key (direct mode) or to a
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* context generated by the noekeon_init() function (indirect mode).
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* \param buffer pointer to the 64 bit (8 byte) block to encrypt
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* \param key pointer to either the key (128 bit = 16 byte; direct mode) or
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* to the context (indirect mode)
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*/
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void noekeon_enc(void *buffer, const void *key);
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/** \fn void noekeon_dec(void *buffer, const void *key)
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* \brief noekeon encrytion funtion
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*
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* This function decrypts a block (64 bit = 8 byte) encrypted with the noekeon
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* encrytion algorithm. Due to the two modes of noekeon (direct mode and
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* indirect mode) the second parameter either points directly to the key
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* (direct mode) or to a context generated by the noekeon_init() function
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* (indirect mode).
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* \param buffer pointer to the 64 bit (8 byte) block to decrypt
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* \param key pointer to either the key (128 bit = 16 byte; direct mode) or
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* to the context (indirect mode)
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*/
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void noekeon_dec(void *buffer, const void *key);
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/** \fn void noekeon_init(const void *key, noekeon_ctx_t *ctx)
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* \brief noekeon context generation function for indirect mode
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*
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* This function generates a context from the supplied key for using
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* noekeon in indirect mode. For using noekeon in direct mode supply the key
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* direct to the noekeon_enc() and noekeon_dec() functions.
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* \param key pointer to the key (128 bit = 16 byte)
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* \param ctx pointer to the context to fill with key material
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* to the context (indirect mode)
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*/
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void noekeon_init(const void *key, noekeon_ctx_t *ctx);
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#endif /*NOEKEON_H_*/
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