96 lines
5 KiB
C
96 lines
5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2013 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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const unsigned char xor_key[512] =
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{
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0x9b, 0x94, 0xf6, 0x9e, 0x2f, 0x0a, 0x40, 0xfd, 0x9a, 0x78, 0x2c, 0xdd, 0x4f, 0x96, 0x5e, 0xdd,
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0xc9, 0x01, 0xd3, 0x9d, 0x71, 0x8f, 0xda, 0xbb, 0xc1, 0xdf, 0x5f, 0x01, 0xaa, 0x35, 0x6f, 0xdc,
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0x33, 0x85, 0xf9, 0x10, 0x64, 0xce, 0xd2, 0xab, 0x62, 0xaa, 0xfc, 0x37, 0xdb, 0x22, 0x28, 0x34,
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0xa4, 0xc6, 0x79, 0xc6, 0xa1, 0xfe, 0x8b, 0xaa, 0xe6, 0x9b, 0xb4, 0x6e, 0x1b, 0xb1, 0x8a, 0xe2,
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0x25, 0xa9, 0xa5, 0xca, 0x03, 0x92, 0xa6, 0xd5, 0xf5, 0xb8, 0x77, 0xd3, 0xe4, 0x78, 0xd5, 0x22,
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0xfe, 0x52, 0x0c, 0x69, 0xa1, 0x40, 0x02, 0x89, 0x7a, 0x46, 0x77, 0xd1, 0xee, 0x4b, 0x8b, 0x72,
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0xb8, 0x27, 0x81, 0x32, 0xd4, 0xfd, 0xc2, 0x64, 0x9c, 0xcb, 0x25, 0x17, 0x32, 0x3f, 0x6d, 0x8e,
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0x1d, 0xcd, 0x14, 0xf0, 0x37, 0xfe, 0x47, 0x41, 0xc6, 0x0b, 0x31, 0x91, 0xe9, 0xaa, 0x7c, 0x73,
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0x36, 0x28, 0x15, 0xb1, 0xa1, 0xb8, 0x30, 0x3e, 0x9f, 0x0b, 0x8d, 0x6c, 0x8c, 0x20, 0xf9, 0x5f,
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0x4a, 0x5e, 0x17, 0xc2, 0x2c, 0xe0, 0x60, 0xb8, 0x12, 0x10, 0x69, 0x16, 0xd5, 0x77, 0x64, 0xcf,
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0xe5, 0xd3, 0xea, 0xb0, 0x30, 0x6a, 0xf8, 0x4d, 0x46, 0x9f, 0x37, 0x3b, 0xbb, 0xc3, 0x80, 0x7f,
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0xcd, 0x2d, 0x9f, 0x47, 0x47, 0x8d, 0x57, 0xd8, 0xa6, 0x7d, 0xa7, 0xc8, 0x79, 0x59, 0x4c, 0x6d,
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0x0e, 0x51, 0x87, 0x95, 0x4a, 0xbc, 0x20, 0x77, 0xd9, 0xaf, 0xab, 0xea, 0x88, 0xcf, 0x0a, 0xd5,
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0xee, 0x63, 0x33, 0xe7, 0x52, 0xae, 0x34, 0x88, 0xc9, 0x7b, 0x74, 0x0f, 0x9f, 0xf9, 0x3b, 0x35,
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0xf8, 0xc9, 0x74, 0xc9, 0xb7, 0x56, 0xb2, 0xa6, 0x9f, 0x65, 0x72, 0xe3, 0xb8, 0xed, 0xa0, 0x49,
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0xf5, 0x28, 0x5c, 0x0a, 0x13, 0xea, 0xfd, 0xaf, 0xc4, 0x32, 0x56, 0x53, 0x0d, 0xfe, 0x39, 0x0f,
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0xed, 0x64, 0x3a, 0xb5, 0x3f, 0xdf, 0xb5, 0xc1, 0xe1, 0xe7, 0x13, 0x8c, 0x16, 0xc4, 0x48, 0xc3,
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0x29, 0xa3, 0xa0, 0x18, 0x54, 0xea, 0xbc, 0x37, 0xdf, 0xc9, 0xd7, 0xfc, 0x8c, 0x11, 0x4f, 0xe3,
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0x33, 0x4a, 0x60, 0xc0, 0xaa, 0x00, 0x32, 0xb0, 0xe7, 0x5d, 0x16, 0x4f, 0x69, 0xfd, 0x0c, 0x2b,
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0xd4, 0xfd, 0x8a, 0x79, 0xdb, 0x55, 0x78, 0x07, 0x62, 0x68, 0x7f, 0x72, 0xe4, 0xda, 0x83, 0x99,
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0x13, 0xa2, 0x6e, 0x51, 0xbf, 0x60, 0x30, 0x5b, 0xf9, 0xf0, 0x04, 0x93, 0x78, 0x3f, 0xf4, 0x69,
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0x3c, 0x5d, 0x9f, 0x95, 0x70, 0xd4, 0x3a, 0x07, 0x95, 0x39, 0xd5, 0x1d, 0xdd, 0x00, 0xdf, 0x19,
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0xd5, 0x94, 0xed, 0xd2, 0x47, 0xa8, 0xb7, 0xaa, 0x5f, 0xc7, 0x63, 0xbf, 0x0c, 0x33, 0x07, 0x66,
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0xa9, 0xec, 0x69, 0xd5, 0xdd, 0x0f, 0x09, 0x1f, 0xc0, 0x61, 0x61, 0x66, 0x3f, 0x2c, 0x6b, 0x4b,
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0xc1, 0x4a, 0x64, 0xaa, 0x0b, 0x7f, 0xd0, 0x85, 0x60, 0x0c, 0xbe, 0x3d, 0xed, 0x80, 0x4d, 0x08,
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0x65, 0xd2, 0x6f, 0x9f, 0xe9, 0xad, 0xed, 0x37, 0x2a, 0x0b, 0xab, 0x00, 0xd1, 0x05, 0x2e, 0x18,
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0x1f, 0xe9, 0x5b, 0x41, 0xd0, 0x8e, 0x81, 0xd4, 0x46, 0xe4, 0x9a, 0x74, 0xe3, 0xcf, 0xce, 0x38,
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0xb7, 0x36, 0x39, 0x5c, 0x5b, 0x57, 0xee, 0x37, 0x1c, 0x5d, 0x3c, 0x6d, 0x5c, 0x34, 0x30, 0x66,
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0x36, 0x9c, 0x5a, 0xff, 0x61, 0x7c, 0xd4, 0x7f, 0x57, 0x79, 0x81, 0xcc, 0xb6, 0xc8, 0x93, 0xdf,
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0xe6, 0x40, 0x50, 0x75, 0xfc, 0xb4, 0x15, 0x07, 0xde, 0x7f, 0x9b, 0xfd, 0xa8, 0x60, 0x79, 0x1f,
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0x4f, 0x89, 0xea, 0x4c, 0x85, 0xf2, 0xd1, 0x6e, 0xdc, 0xf3, 0xfa, 0xad, 0x2d, 0x12, 0xa3, 0xe3,
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0x3b, 0x1a, 0x3b, 0x50, 0x94, 0x6d, 0x69, 0x90, 0xb8, 0x9a, 0x50, 0xc9, 0x7d, 0x32, 0x12, 0x29,
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};
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static void perm_it(unsigned char *data, int length)
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{
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int i, j;
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for(i = 0; (i + 12) < length; i += 12)
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{
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unsigned char perm[8];
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perm[0] = data[i + 1];
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perm[1] = data[i + 7];
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perm[2] = data[i + 2];
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perm[3] = data[i + 4];
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perm[4] = data[i + 0];
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perm[5] = data[i + 6];
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perm[6] = data[i + 3];
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perm[7] = data[i + 5];
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for(j = 0; j < 8; j++)
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data[i + j] = perm[j];
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}
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}
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static void xor_it(unsigned char *data, int length)
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{
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int i, j;
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for(i = 0; i < length; i += 4)
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{
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unsigned char Ekey = xor_key[xor_key[data[i]] + 256];
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for(j = 1; j < 4; j++)
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data[i + j] ^= Ekey;
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}
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}
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int encrypt(unsigned char *data, int length)
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{
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if (length % 512)
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return -1;
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xor_it(data, length);
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perm_it(data, length);
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return 0;
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}
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