String_Obfuscation_Tool.rar_purpose

/** ****************************************************************************** * * This code is part of the String Obfuscation Project by Michael Haephrati * The source code is licensed under COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL)Version 1.1 * � 2012 Michael Haephrati - haephrati@gmail.com * * @file aes256_dec.c * * @brief @~english Implementatoion of function for encode/decode string. * * * * * extern "C" wchar_t* __ODC__( const char * ); ****************************************************************************** * @n @b encoding: US-ASCII * @n @b tabsize: 8 (not used) * @n @b indentation: 2 */ #include <stdlib.h> #include <stdio.h> #include <memory.h> #include <tchar.h> #include <string.h> #ifndef BYTE #define BYTE unsigned char #endif typedef struct _ref { void * org_str; struct _ref *next; } DECODED_LIST, *PDECODED_LIST; DECODED_LIST charList = {NULL,NULL}; DECODED_LIST wcharList = {NULL,NULL}; /* static int w_bufcnt = 0; static wchar_t * w_buff[16] = {0}; static int w_bufflen[16] = {0}; */ static wchar_t w_text_err[] = _T("Not enought memory"); /* static int a_bufcnt = 0; static char * a_buff[16] = {0}; static int a_bufflen[16] = {0}; */ static char a_text_err[] = "Not enought memory"; /* -------------------------------------------------------------------------- */ typedef struct { BYTE key[32]; BYTE enckey[32]; BYTE deckey[32]; } aes_key; /* -------------------------------------------------------------------------- */ static const BYTE sbox_enc[256] = { 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 }; static const BYTE sbox_dec[256] = { 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d }; #define rj_sbox_enc(x) sbox_enc[(x)] #define rj_sbox_dec(x) sbox_dec[(x)] /* -------------------------------------------------------------------------- */ static BYTE rj_xtime(BYTE x) { return (x & 0x80) ? ((x << 1) ^ 0x1b) : (x << 1); } /* -------------------------------------------------------------------------- */ static void aes_subBytes_enc( BYTE *buf ) { register BYTE i = 16; while (i--) buf[i] = rj_sbox_enc(buf[i]); } /* -------------------------------------------------------------------------- */ static void aes_subBytes_dec(BYTE *buf) { register BYTE i = 16; while (i--) buf[i] = rj_sbox_dec(buf[i]); } /* -------------------------------------------------------------------------- */ static void aes_addRoundKey(BYTE *buf, BYTE *key) { register BYTE i = 16; while (i--) buf[i] ^= key[i]; } /* -------------------------------------------------------------------------- */ static void aes_addRoundKey_cpy( BYTE *buf, BYTE *key, BYTE *cpk ) { register BYTE i = 16; while (i--) buf[i] ^= (cpk[i] = key[i]), cpk[16+i] = key[16 + i]; } /* -------------------------------------------------------------------------- */ static void aes_shiftRows_enc(BYTE *buf) { register BYTE i, j; /* to make it potentially parallelable :) */ i = buf[1]; buf[1] = buf[5]; buf[5] = buf[9]; buf[9] = buf[13]; buf[13] = i; i = buf[10]; buf[10] = buf[2]; buf[2] = i; j = buf[3]; buf[3] = buf[15]; buf[15] = buf[11]; buf[11] = buf[7]; buf[7] = j; j = buf[14]; buf[14] = buf[6]; buf[6] = j; } /* -------------------------------------------------------------------------- */ static void aes_shiftRows_dec(BYTE *buf) { register BYTE i, j; /* same as above :) */ i = buf[1]; buf[1] = buf[13]; buf[13] = buf[9]; buf[9] = buf[5]; buf[5] = i; i = buf[2]; buf[2] = buf[10]; buf[10] = i; j = buf[3]; buf[3] = buf[7]; buf[7] = buf[11]; buf[11] = buf[15]; buf[15] = j; j = buf[6]; buf[6] = buf[14]; buf[14] = j; } /* -------------------------------------------------------------------------- */ static void aes_mixColumns(BYTE *buf) { register BYTE i, a, b, c, d, e; for (i = 0; i < 16; i += 4) { a = buf[i]; b = buf[i + 1]; c = buf[i + 2]; d = buf[i + 3]; e = a ^ b ^ c ^ d; buf[i] ^= e ^ rj_xtime(a^b); buf[i+1] ^= e ^ rj_xtime(b^c); buf[i+2] ^= e ^ rj_xtime(c^d); buf[i+3] ^= e ^ rj_xtime(d^a); } } /* -------------------------------------------------------------------------- */ static void aes_mixColumns_inv(BYTE *buf) { register BYTE i, a, b, c, d, e, x, y, z; for (i = 0; i < 16; i += 4) { a = buf[i]; b = buf[i + 1]; c = buf[i + 2]; d = buf[i + 3]; e = a ^ b ^ c ^ d; z = rj_xtime(e); x = e ^ rj_xtime(rj_xtime(z^a^c)); y = e ^ rj_xtime(rj_xtime(z^b^d)); buf[i] ^= x ^