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/*
* Filename: tea.c
* Description: TEA <20><>ȣȭ <20><><EFBFBD><EFBFBD>
*
* Author: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (aka. <20><><EFBFBD><EFBFBD>, Cronan), <20>ۿ<EFBFBD><DBBF><EFBFBD> (aka. myevan, <20><><EFBFBD>ڷ<EFBFBD>)
*/
#include "stdafx.h"
/*
* TEA Encryption Module Instruction
* Edited by <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> aka. <20><><EFBFBD><EFBFBD>, Cronan
*
* void tea_code(const DWORD sz, const DWORD sy, const DWORD *key, DWORD *dest)
* void tea_decode(const DWORD sz, const DWORD sy, const DWORD *key, DWORD *dest)
* 8<><38><EFBFBD><EFBFBD>Ʈ<EFBFBD><C6AE> <20><>ȣ/<2F><>ȣȭ <20>Ҷ<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD>. key <20><> 16 <20><><EFBFBD><EFBFBD>Ʈ<EFBFBD><C6AE><EFBFBD><EFBFBD> <20>Ѵ<EFBFBD>.
* sz, sy <20><> 8<><38><EFBFBD><EFBFBD>Ʈ<EFBFBD><C6AE> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD>.
*
* int tea_decrypt(DWORD *dest, const DWORD *src, const DWORD *key, int size);
* int tea_encrypt(DWORD *dest, const DWORD *src, const DWORD *key, int size);
* <20>Ѳ<EFBFBD><D1B2><EFBFBD><EFBFBD><EFBFBD> 8 <20><><EFBFBD><EFBFBD>Ʈ <20>̻<EFBFBD><CCBB><EFBFBD> <20><>ȣ/<2F><>ȣȭ <20>Ҷ<EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD>. <20><><EFBFBD><EFBFBD> size <20><>
* 8<><38> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ƴϸ<C6B4> 8<><38> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ũ<>⸦ "<22>÷<EFBFBD><C3B7><EFBFBD>" <20><>ȣȭ <20>Ѵ<EFBFBD>.
*
* ex. tea_code(pdwSrc[1], pdwSrc[0], pdwKey, pdwDest);
* tea_decrypt(pdwDest, pdwSrc, pdwKey, nSize);
*/
#define TEA_ROUND 32 // 32 <20><> <20><><EFBFBD><EFBFBD><EFBFBD>ϸ<EFBFBD>, <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>.
#define DELTA 0x9E3779B9 // DELTA <20><> <20>ٲ<EFBFBD><D9B2><EFBFBD> <20><><EFBFBD><EFBFBD>.
char tea_nilbuf[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
INLINE void tea_code(const DWORD sz, const DWORD sy, const DWORD *key, DWORD *dest)
{
register DWORD y = sy, z = sz, sum = 0;
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 1
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 2
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 3
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 4
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 5
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 6
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 7
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 8
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 9
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 10
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 11
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 12
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 13
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 14
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 15
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 16
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 17
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 18
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 19
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 20
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 21
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 22
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 23
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 24
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 25
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 26
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 27
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 28
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 29
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 30
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 31
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
y += ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]); // 32
sum += DELTA;
z += ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]);
*(dest++) = y;
*dest = z;
}
INLINE void tea_decode(const DWORD sz, const DWORD sy, const DWORD *key, DWORD *dest)
{
register DWORD y = sy, z = sz, sum = DELTA * TEA_ROUND;
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 1
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 2
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 3
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 4
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 5
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 6
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 7
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 8
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 9
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 10
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 11
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 12
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 13
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 14
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 15
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 16
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 17
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 18
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 19
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 20
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 21
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 22
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 23
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 24
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 25
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 26
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 27
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 28
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 29
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 30
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 31
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
z -= ((y << 4 ^ y >> 5) + y) ^ (sum + key[sum >> 11 & 3]); // 32
sum -= DELTA;
y -= ((z << 4 ^ z >> 5) + z) ^ (sum + key[sum & 3]);
*(dest++) = y;
*dest = z;
}
int TEA_Encrypt(DWORD *dest, const DWORD *src, const DWORD * key, int size)
{
int i;
int resize;
if (size % 8 != 0)
{
resize = size + 8 - (size % 8);
memset((char *) src + size, 0, resize - size);
}
else
resize = size;
for (i = 0; i < resize >> 3; i++, dest += 2, src += 2)
tea_code(*(src + 1), *src, key, dest);
return (resize);
}
int TEA_Decrypt(DWORD *dest, const DWORD *src, const DWORD * key, int size)
{
int i;
int resize;
if (size % 8 != 0)
resize = size + 8 - (size % 8);
else
resize = size;
for (i = 0; i < resize >> 3; i++, dest += 2, src += 2)
tea_decode(*(src + 1), *src, key, dest);
return (resize);
}