lowentry.ue4.classes.internal.aes.EncryptionAesFastEngine_NonJava Maven / Gradle / Ivy
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A Java library for the Low Entry UE4 plugins.
package lowentry.ue4.classes.internal.aes;
import lowentry.ue4.classes.AesKey;
/**
* Copied from Bouncy Castle.
*
* Made several changes to it to improve the performance and to implement CBC.
*
* This class is made to be implemented in other languages.
*/
public class EncryptionAesFastEngine_NonJava
{
private final int ROUNDS;
private final int[][] EW;
private final int[][] DW;
public int C0 = 0;
public int C1 = 0;
public int C2 = 0;
public int C3 = 0;
public int C0store1 = 0;
public int C1store1 = 0;
public int C2store1 = 0;
public int C3store1 = 0;
public int C0store2 = 0;
public int C1store2 = 0;
public int C2store2 = 0;
public int C3store2 = 0;
public EncryptionAesFastEngine_NonJava(final AesKey key)
{
ROUNDS = key.rounds;
EW = key.encryptionW;
DW = key.decryptionW;
}
private static int s(final int a, final int b)
{
return (a >>> b);
}
public static AesKey generateAesKey(final byte[] key)
{
return generateAesKeyCustom(key, true, true);
}
public static AesKey generateAesKeyCustom(final byte[] key, final boolean forEncryption, final boolean forDecryption)
{
if(key == null)
{
return null;
}
int keyLen = key.length;
if((keyLen != 16) && ((keyLen != 24) & (keyLen != 32)))
{
//throw new IllegalArgumentException("Key length not 128/192/256 bits (it is " + keyLen + ", it needs to be either 16 for AES-128, 24 for AES-192, or 32 for AES-256)");
return null;
}
int kc = s(keyLen, 2);
int rounds = kc + 6;
if(!forEncryption && !forDecryption)
{
return new AesKey(rounds, null, null);
}
int[][] ew = new int[rounds + 1][4];
switch(kc)
{
case 4:
{
int t0 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 0);
ew[0][0] = t0;
int t1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 4);
ew[0][1] = t1;
int t2 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 8);
ew[0][2] = t2;
int t3 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 12);
ew[0][3] = t3;
for(int i = 1; i <= 10; i++)
{
int u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t3, 8)) ^ EncryptionAesFastEngineGeneral_NonJava.rcon[i - 1];
t0 ^= u;
ew[i][0] = t0;
t1 ^= t0;
ew[i][1] = t1;
t2 ^= t1;
ew[i][2] = t2;
t3 ^= t2;
ew[i][3] = t3;
}
break;
}
case 6:
{
int t0 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 0);
ew[0][0] = t0;
int t1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 4);
ew[0][1] = t1;
int t2 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 8);
ew[0][2] = t2;
int t3 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 12);
ew[0][3] = t3;
int t4 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 16);
ew[1][0] = t4;
int t5 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 20);
ew[1][1] = t5;
int rcon = 1;
int u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t5, 8)) ^ rcon;
rcon <<= 1;
t0 ^= u;
ew[1][2] = t0;
t1 ^= t0;
ew[1][3] = t1;
t2 ^= t1;
ew[2][0] = t2;
t3 ^= t2;
ew[2][1] = t3;
t4 ^= t3;
ew[2][2] = t4;
t5 ^= t4;
ew[2][3] = t5;
for(int i = 3; i < 12; i += 3)
{
u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t5, 8)) ^ rcon;
rcon <<= 1;
t0 ^= u;
ew[i][0] = t0;
t1 ^= t0;
ew[i][1] = t1;
t2 ^= t1;
ew[i][2] = t2;
t3 ^= t2;
ew[i][3] = t3;
t4 ^= t3;
ew[i + 1][0] = t4;
t5 ^= t4;
ew[i + 1][1] = t5;
u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t5, 8)) ^ rcon;
rcon <<= 1;
t0 ^= u;
ew[i + 1][2] = t0;
t1 ^= t0;
ew[i + 1][3] = t1;
t2 ^= t1;
ew[i + 2][0] = t2;
t3 ^= t2;
ew[i + 2][1] = t3;
t4 ^= t3;
ew[i + 2][2] = t4;
t5 ^= t4;
ew[i + 2][3] = t5;
}
u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t5, 8)) ^ rcon;
t0 ^= u;
ew[12][0] = t0;
t1 ^= t0;
ew[12][1] = t1;
t2 ^= t1;
ew[12][2] = t2;
t3 ^= t2;
ew[12][3] = t3;
break;
}
case 8:
{
int t0 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 0);
ew[0][0] = t0;
int t1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 4);
ew[0][1] = t1;
int t2 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 8);
ew[0][2] = t2;
int t3 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 12);
ew[0][3] = t3;
int t4 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 16);
ew[1][0] = t4;
int t5 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 20);
ew[1][1] = t5;
int t6 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 24);
ew[1][2] = t6;
int t7 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(key, 28);
ew[1][3] = t7;
int u = 0;
int rcon = 1;
for(int i = 2; i < 14; i += 2)
{
u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t7, 8)) ^ rcon;
rcon <<= 1;
t0 ^= u;
ew[i][0] = t0;
t1 ^= t0;
ew[i][1] = t1;
t2 ^= t1;
ew[i][2] = t2;
t3 ^= t2;
ew[i][3] = t3;
u = EncryptionAesFastEngineGeneral_NonJava.subWord(t3);
t4 ^= u;
ew[i + 1][0] = t4;
t5 ^= t4;
ew[i + 1][1] = t5;
t6 ^= t5;
ew[i + 1][2] = t6;
t7 ^= t6;
ew[i + 1][3] = t7;
}
u = EncryptionAesFastEngineGeneral_NonJava.subWord(EncryptionAesFastEngineGeneral_NonJava.shift(t7, 8)) ^ rcon;
t0 ^= u;
ew[14][0] = t0;
t1 ^= t0;
ew[14][1] = t1;
t2 ^= t1;
ew[14][2] = t2;
t3 ^= t2;
ew[14][3] = t3;
break;
}
default:
{
//throw new IllegalStateException("Should never get here");
return null;
}
}
if(!forDecryption)
{
return new AesKey(rounds, ew, null);
}
else
{
if(!forEncryption)
{
//int[][] dw = ew;
//ew = null;
for(int j = 1; j < rounds; j++)
{
ew[j][0] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][0]);
ew[j][1] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][1]);
ew[j][2] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][2]);
ew[j][3] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][3]);
}
return new AesKey(rounds, null, ew);
}
else
{
int[][] dw = new int[rounds + 1][4];
//dw[0] = Arrays.copyOf(ew[0], 4);
dw[0][0] = ew[0][0];
dw[0][1] = ew[0][1];
dw[0][2] = ew[0][2];
dw[0][3] = ew[0][3];
//dw[rounds] = Arrays.copyOf(ew[rounds], 4);
dw[rounds][0] = ew[rounds][0];
dw[rounds][1] = ew[rounds][1];
dw[rounds][2] = ew[rounds][2];
dw[rounds][3] = ew[rounds][3];
for(int j = 1; j < rounds; j++)
{
dw[j][0] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][0]);
dw[j][1] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][1]);
dw[j][2] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][2]);
dw[j][3] = EncryptionAesFastEngineGeneral_NonJava.inv_mcol(ew[j][3]);
}
return new AesKey(rounds, ew, dw);
}
}
}
public void loadIv(final byte[] bytes)
{
unpackBlockStore1(bytes, 0);
}
public void processBlockEncryption(final byte[] in, final int inOff, final byte[] out, final int outOff)
{
unpackBlock(in, inOff);
xorBlockByBlockStore1();
encryptBlock();
putBlockInBlockStore1();
packBlock(out, outOff);
}
public void processBlockDecryption(final byte[] in, final int inOff, final byte[] out, final int outOff)
{
unpackBlock(in, inOff);
putBlockInBlockStore2();
decryptBlock();
xorBlockByBlockStore1();
putBlockStore2InBlockStore1();
packBlock(out, outOff);
}
private void unpackBlock(final byte[] bytes, final int off)
{
C0 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off);
C1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 4);
C2 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 8);
C3 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 12);
}
private void unpackBlockStore1(final byte[] bytes, final int off)
{
C0store1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off);
C1store1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 4);
C2store1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 8);
C3store1 = EncryptionAesFastEngineGeneral_NonJava.littleEndianToInt(bytes, off + 12);
}
private void packBlock(final byte[] bytes, final int off)
{
EncryptionAesFastEngineGeneral_NonJava.intToLittleEndian(C0, bytes, off);
EncryptionAesFastEngineGeneral_NonJava.intToLittleEndian(C1, bytes, off + 4);
EncryptionAesFastEngineGeneral_NonJava.intToLittleEndian(C2, bytes, off + 8);
EncryptionAesFastEngineGeneral_NonJava.intToLittleEndian(C3, bytes, off + 12);
}
private void putBlockInBlockStore1()
{
C0store1 = C0;
C1store1 = C1;
C2store1 = C2;
C3store1 = C3;
}
private void putBlockInBlockStore2()
{
C0store2 = C0;
C1store2 = C1;
C2store2 = C2;
C3store2 = C3;
}
private void putBlockStore2InBlockStore1()
{
C0store1 = C0store2;
C1store1 = C1store2;
C2store1 = C2store2;
C3store1 = C3store2;
}
private void xorBlockByBlockStore1()
{
C0 ^= C0store1;
C1 ^= C1store1;
C2 ^= C2store1;
C3 ^= C3store1;
}
private void encryptBlock()
{
int t0 = C0 ^ EW[0][0];
int t1 = C1 ^ EW[0][1];
int t2 = C2 ^ EW[0][2];
int r = 1;
int r0 = 0;
int r1 = 0;
int r2 = 0;
int r3 = C3 ^ EW[0][3];
int i0 = 0;
int i1 = 0;
int i2 = 0;
int i3 = 0;
while(r < (ROUNDS - 1))
{
i0 = t0;
i1 = s(t1, 8);
i2 = s(t2, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r0 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][0];
i0 = t1;
i1 = s(t2, 8);
i2 = s(r3, 16);
i3 = s(t0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r1 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][1];
i0 = t2;
i1 = s(r3, 8);
i2 = s(t0, 16);
i3 = s(t1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r2 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][2];
i0 = r3;
i1 = s(t0, 8);
i2 = s(t1, 16);
i3 = s(t2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][3];
r++;
i0 = r0;
i1 = s(r1, 8);
i2 = s(r2, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t0 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][0];
i0 = r1;
i1 = s(r2, 8);
i2 = s(r3, 16);
i3 = s(r0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t1 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][1];
i0 = r2;
i1 = s(r3, 8);
i2 = s(r0, 16);
i3 = s(r1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t2 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][2];
i0 = r3;
i1 = s(r0, 8);
i2 = s(r1, 16);
i3 = s(r2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][3];
r++;
}
i0 = t0;
i1 = s(t1, 8);
i2 = s(t2, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r0 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][0];
i0 = t1;
i1 = s(t2, 8);
i2 = s(r3, 16);
i3 = s(t0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r1 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][1];
i0 = t2;
i1 = s(r3, 8);
i2 = s(t0, 16);
i3 = s(t1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r2 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][2];
i0 = r3;
i1 = s(t0, 8);
i2 = s(t1, 16);
i3 = s(t2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.T[i0] ^ EncryptionAesFastEngineGeneral_NonJava.T[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.T[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.T[768 + i3] ^ EW[r][3];
r++;
i0 = r0;
i1 = s(r1, 8);
i2 = s(r2, 16);
i3 = s(r3, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.S[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.S[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.S[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.S[i3 & 255] & 255;
C0 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ EW[r][0];
i0 = r1;
i1 = s(r2, 8);
i2 = s(r3, 16);
i3 = s(r0, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.S[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.S[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.S[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.S[i3 & 255] & 255;
C1 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ EW[r][1];
i0 = r2;
i1 = s(r3, 8);
i2 = s(r0, 16);
i3 = s(r1, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.S[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.S[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.S[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.S[i3 & 255] & 255;
C2 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ EW[r][2];
i0 = r3;
i1 = s(r0, 8);
i2 = s(r1, 16);
i3 = s(r2, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.S[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.S[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.S[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.S[i3 & 255] & 255;
C3 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ EW[r][3];
}
private void decryptBlock()
{
int t0 = C0 ^ DW[ROUNDS][0];
int t1 = C1 ^ DW[ROUNDS][1];
int t2 = C2 ^ DW[ROUNDS][2];
int r = ROUNDS - 1;
int r0 = 0;
int r1 = 0;
int r2 = 0;
int r3 = C3 ^ DW[ROUNDS][3];
int i0 = 0;
int i1 = 0;
int i2 = 0;
int i3 = 0;
while(r > 1)
{
i0 = t0;
i1 = s(r3, 8);
i2 = s(t2, 16);
i3 = s(t1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r0 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][0];
i0 = t1;
i1 = s(t0, 8);
i2 = s(r3, 16);
i3 = s(t2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r1 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][1];
i0 = t2;
i1 = s(t1, 8);
i2 = s(t0, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r2 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][2];
i0 = r3;
i1 = s(t2, 8);
i2 = s(t1, 16);
i3 = s(t0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][3];
r--;
i0 = r0;
i1 = s(r3, 8);
i2 = s(r2, 16);
i3 = s(r1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t0 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][0];
i0 = r1;
i1 = s(r0, 8);
i2 = s(r3, 16);
i3 = s(r2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t1 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][1];
i0 = r2;
i1 = s(r1, 8);
i2 = s(r0, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
t2 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][2];
i0 = r3;
i1 = s(r2, 8);
i2 = s(r1, 16);
i3 = s(r0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[r][3];
r--;
}
i0 = t0;
i1 = s(r3, 8);
i2 = s(t2, 16);
i3 = s(t1, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r0 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[1][0];
i0 = t1;
i1 = s(t0, 8);
i2 = s(r3, 16);
i3 = s(t2, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r1 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[1][1];
i0 = t2;
i1 = s(t1, 8);
i2 = s(t0, 16);
i3 = s(r3, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r2 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[1][2];
i0 = r3;
i1 = s(t2, 8);
i2 = s(t1, 16);
i3 = s(t0, 24);
i0 &= 255;
i1 &= 255;
i2 &= 255;
i3 &= 255;
r3 = EncryptionAesFastEngineGeneral_NonJava.Tinv[i0] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[256 + i1] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[512 + i2] ^ EncryptionAesFastEngineGeneral_NonJava.Tinv[768 + i3] ^ DW[1][3];
i0 = r0;
i1 = s(r3, 8);
i2 = s(r2, 16);
i3 = s(r1, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.Si[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.Si[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.Si[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.Si[i3 & 255] & 255;
C0 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ DW[0][0];
i0 = r1;
i1 = s(r0, 8);
i2 = s(r3, 16);
i3 = s(r2, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.Si[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.Si[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.Si[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.Si[i3 & 255] & 255;
C1 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ DW[0][1];
i0 = r2;
i1 = s(r1, 8);
i2 = s(r0, 16);
i3 = s(r3, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.Si[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.Si[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.Si[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.Si[i3 & 255] & 255;
C2 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ DW[0][2];
i0 = r3;
i1 = s(r2, 8);
i2 = s(r1, 16);
i3 = s(r0, 24);
i0 = EncryptionAesFastEngineGeneral_NonJava.Si[i0 & 255] & 255;
i1 = EncryptionAesFastEngineGeneral_NonJava.Si[i1 & 255] & 255;
i2 = EncryptionAesFastEngineGeneral_NonJava.Si[i2 & 255] & 255;
i3 = EncryptionAesFastEngineGeneral_NonJava.Si[i3 & 255] & 255;
C3 = i0 ^ (i1 << 8) ^ (i2 << 16) ^ (i3 << 24) ^ DW[0][3];
}
}
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