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https://github.com/libretro/scummvm.git
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65 lines
2.9 KiB
C++
65 lines
2.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "encryptedfile.h"
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static const uint8 XOR_TABLE[] = {
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0x41, 0x2b, 0x7a, 0x0c, 0xc8, 0xe5, 0x0c, 0xde, 0x45, 0xa8, 0x00, 0xad,
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0x70, 0xac, 0x23, 0xe0, 0x0c, 0xde, 0xac, 0x16, 0xa1, 0x1a, 0x70, 0x17,
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0x1b, 0x90, 0x34, 0x6e, 0x53, 0xfe, 0xdd, 0x3c, 0xef, 0x74, 0x75, 0x3e,
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0x2e, 0xb0, 0x3d, 0x2b, 0x74, 0x6d, 0x59, 0xde, 0xc6, 0x20, 0xb8, 0xf3,
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0x7d, 0xfa, 0x4d, 0xbd, 0xdb, 0x3c, 0xc5, 0xcb, 0x57, 0x13, 0x40, 0x6b,
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0xb8, 0xad, 0xb9, 0xc1, 0x6a, 0x37, 0x39, 0x80, 0x94, 0xd3, 0xdf, 0x4b,
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0xe4, 0xe4, 0x7a, 0x4c, 0x0f, 0x21, 0x27, 0x9a, 0x7e, 0x52, 0x35, 0x58,
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0xb4, 0xbc, 0x5a, 0xc9, 0x48, 0x7f, 0xcc, 0xb6, 0x97, 0x7b, 0xf1, 0xd5,
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0x88, 0x8c, 0xa9, 0x27, 0xf7, 0x20, 0x68, 0x65, 0xad, 0x6f, 0x9e, 0x07,
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0xf8, 0xf6, 0x2c, 0x65, 0x4a, 0xe9, 0xd8, 0x13, 0x6a, 0xb5, 0x14, 0x6f,
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0x29, 0xdc, 0x68, 0xf8, 0xa0, 0xb6, 0x73, 0x03, 0x69, 0xe3, 0x4f, 0xb6,
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0x59, 0x79, 0xae, 0x93, 0xad, 0x40, 0x27, 0xd0, 0xb5, 0x7a, 0x68, 0x5d,
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0x5e, 0x19, 0x53, 0x4f, 0x40, 0x56, 0x3d, 0x10, 0xf8, 0x0a, 0xc6, 0x90,
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0x06, 0x45, 0x13, 0x4a, 0x6a, 0xfe, 0x56, 0xeb, 0xbc, 0xd9, 0xee, 0xe0,
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0x85, 0x5e, 0x98, 0x23, 0xf9, 0x19, 0x60, 0xf9, 0x7e, 0x8d, 0x61, 0xa0,
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0x7c, 0xe1, 0x84, 0xf2, 0x7a, 0xb8, 0xbe, 0x8e, 0x81, 0x9e, 0x87, 0x20,
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0x32, 0xf3, 0x8c, 0xb4, 0x2c, 0x4d, 0xc8, 0x50, 0x9b, 0xa5, 0x9c, 0x27,
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0x02, 0xd6, 0x7f, 0x2a, 0xaf, 0x46, 0x65, 0xd0, 0x6a, 0xae, 0xfa, 0x53,
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0x37, 0x6c, 0x49, 0xb9, 0x4d, 0xcd, 0x6c, 0x6b, 0xa7, 0x2d, 0x66, 0x32,
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0xb4, 0xf5, 0x41, 0xd5, 0x18, 0xc4, 0xfd, 0xbe, 0x8a, 0x47, 0x11, 0x50,
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0x3d, 0x97, 0x64, 0xda, 0x5a, 0x27, 0x18, 0x60, 0x78, 0x80, 0x86, 0x8a,
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0x2a, 0x72, 0x40, 0x89
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};
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namespace MutationOfJB {
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uint32 EncryptedFile::read(void *dataPtr, uint32 dataSize) {
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uint8 xorPos = static_cast<uint8>(pos() % ARRAYSIZE(XOR_TABLE));
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const uint32 readBytes = Common::File::read(dataPtr, dataSize);
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for (uint32 i = 0; i < readBytes; ++i) {
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static_cast<uint8 *>(dataPtr)[i] ^= XOR_TABLE[xorPos];
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xorPos++;
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}
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return readBytes;
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}
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}
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