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arctwo.h

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  • Forked from Nettle / nettle
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    arctwo.h 2.94 KiB
    /* arctwo.h
    
       The arctwo/rfc2268 block cipher.
    
       Copyright (C) 2004 Simon Josefsson
       Copyright (C) 2002, 2004, 2014 Niels Möller
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    #ifndef NETTLE_ARCTWO_H_INCLUDED
    #define NETTLE_ARCTWO_H_INCLUDED
    
    #include "nettle-types.h"
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /* Name mangling */
    #define arctwo_set_key nettle_arctwo_set_key
    #define arctwo_set_key_ekb nettle_arctwo_set_key_ekb
    #define arctwo_set_key_gutmann nettle_arctwo_set_key_gutmann
    #define arctwo40_set_key nettle_arctwo40_set_key
    #define arctwo64_set_key nettle_arctwo64_set_key
    #define arctwo128_set_key nettle_arctwo128_set_key
    #define arctwo128_set_key_gutmann nettle_arctwo128_set_key_gutmann
    #define arctwo_encrypt nettle_arctwo_encrypt
    #define arctwo_decrypt nettle_arctwo_decrypt
    
    #define ARCTWO_BLOCK_SIZE 8
    
    /* Variable key size from 1 byte to 128 bytes. */
    #define ARCTWO_MIN_KEY_SIZE 1
    #define ARCTWO_MAX_KEY_SIZE 128
    
    #define ARCTWO_KEY_SIZE 8
    
    struct arctwo_ctx
    {
      uint16_t S[64];
    };
    
    /* Key expansion function that takes the "effective key bits", 1-1024,
       as an explicit argument. 0 means maximum key bits. */
    void