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/*--------------------------------------------*/
// aes_ecbl.cl
/*--------------------------------------------*/

#define WG_SIZE 256


// Tabular Rijndael exponentiation
__constant unsigned char RCON[256] = {
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36,
};
// Only 10 values used by AES-128
/*0x6c, 0xd8, 0xab, 0x4d, 0x9a,
0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d};*/

// Forward S-BOX
__constant unsigned char SBOX[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
};


__kernel void aes_ecb(__constant unsigned char *key,
__global unsigned char *plaintext,
__global unsigned char *ciphertext,
__global unsigned int *gT0,
__global unsigned int *gT1,
__global unsigned int *gT2,
__global unsigned int *gT3,
unsigned int offset)
{
// Get local and global identifiers
const unsigned int gIdx = get_global_id(0) + offset;
const unsigned int idx = get_local_id(0);

__global unsigned int *plainPtr = (__global unsigned int*)plaintext;
__global unsigned int *cipherPtr = (__global unsigned int*)ciphertext;

//__local unsigned int state[4], tmpState[4];
unsigned int state[4], tmpState[4];
__local unsigned int expKeyPtr[44];
unsigned int tmp;

__local unsigned int T0[256];
__local unsigned int T1[256];
__local unsigned int T2[256];
__local unsigned int T3[256];

// First workitem of each workgroup compute the expanded key on-the-fly
if (!idx)
{

// First 16 bytes are the encryption key
expKeyPtr[0] = ((__constant unsigned int*)key)[0];
expKeyPtr[1] = ((__constant unsigned int*)key)[1];
expKeyPtr[2] = ((__constant unsigned int*)key)[2];
expKeyPtr[3] = ((__constant unsigned int*)key)[3];


// Generate the remaining bytes
for (int i=1,j; i<=10; i++)
{
// multiples of 4
j=i<<2;

// Get the values of the previous 4 bytes of the expanded key
tmp = expKeyPtr[j-1];

// Perform key schedule core on tmp:
// TODO:
// - handle big endian?
// - join in a single step?
// 1- rotate
tmp = (tmp>>8)^(tmp<<24);

// 2 - apply SBOX
tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

// 3 - perform RCON(i) and xor with the first byte of tmp
tmp ^= RCON[i];

// Done with key schedule core


// Get first 4 bytes of the key expansion by xor-ing tmp with the 4 bytes 16 bytes before
expKeyPtr[j] = tmp ^ expKeyPtr[j-4];

// Do the same for the remaining 12 bytes of the expanded key
expKeyPtr[j+1] = expKeyPtr[j] ^ expKeyPtr[j+1 -4];
expKeyPtr[j+2] = expKeyPtr[j+1] ^ expKeyPtr[j+2 -4];
expKeyPtr[j+3] = expKeyPtr[j+2] ^ expKeyPtr[j+3 -4];
}


/*
// TODO: WHAT A HELL IS NOT WORKING IN THE UN-ROLLED LOOP?!?
// Round 1
// Get the values of the previous 4 bytes of the expanded key
tmp = expKeyPtr[3];

// Perform key schedule core on tmp:
// TODO:
// - handle big endian?
// - join in a single step?
// 1- rotate
tmp = (tmp>>8)^(tmp<<24);

// TODO: join 2 and 3 in a single step
// 2 - apply SBOX
tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

// 3 - perform RCON(i) and xor with the first byte of tmp
tmp ^= RCON[1];

// Done with key schedule core

// Get first 4 bytes of the key expansion by xor-ing tmp with the 4 bytes 16 bytes before
expKeyPtr[4] = tmp ^ expKeyPtr[0];

// Do the same for the remaining 12 bytes of the expanded key
expKeyPtr[5] = expKeyPtr[4] ^ expKeyPtr[1];
expKeyPtr[6] = expKeyPtr[5] ^ expKeyPtr[2];
expKeyPtr[7] = expKeyPtr[6] ^ expKeyPtr[3];

// Round 2
tmp = expKeyPtr[7];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[2];

expKeyPtr[8] = tmp ^ expKeyPtr[4];
expKeyPtr[9] = expKeyPtr[8] ^ expKeyPtr[5];
expKeyPtr[10] = expKeyPtr[9] ^ expKeyPtr[6];
expKeyPtr[11] = expKeyPtr[10] ^ expKeyPtr[7];

// Round 3
tmp = expKeyPtr[11];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[3];

expKeyPtr[12] = tmp ^ expKeyPtr[8];
expKeyPtr[13] = expKeyPtr[12] ^ expKeyPtr[9];
expKeyPtr[14] = expKeyPtr[13] ^ expKeyPtr[10];
expKeyPtr[15] = expKeyPtr[14] ^ expKeyPtr[11];


// Round 4
tmp = expKeyPtr[15];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[4];

expKeyPtr[16] = tmp ^ expKeyPtr[12];
expKeyPtr[17] = expKeyPtr[16] ^ expKeyPtr[13];
expKeyPtr[18] = expKeyPtr[17] ^ expKeyPtr[14];
expKeyPtr[19] = expKeyPtr[18] ^ expKeyPtr[15];


// Round 5
tmp = expKeyPtr[19];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[5];

expKeyPtr[20] = tmp ^ expKeyPtr[16];
expKeyPtr[21] = expKeyPtr[20] ^ expKeyPtr[17];
expKeyPtr[22] = expKeyPtr[21] ^ expKeyPtr[18];
expKeyPtr[23] = expKeyPtr[22] ^ expKeyPtr[19];


// Round 6
tmp = expKeyPtr[23];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[6];

expKeyPtr[24] = tmp ^ expKeyPtr[20];
expKeyPtr[25] = expKeyPtr[24] ^ expKeyPtr[21];
expKeyPtr[26] = expKeyPtr[25] ^ expKeyPtr[22];
expKeyPtr[27] = expKeyPtr[26] ^ expKeyPtr[23];


// Round 7
tmp = expKeyPtr[27];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[7];

expKeyPtr[28] = tmp ^ expKeyPtr[24];
expKeyPtr[29] = expKeyPtr[28] ^ expKeyPtr[25];
expKeyPtr[30] = expKeyPtr[29] ^ expKeyPtr[26];
expKeyPtr[31] = expKeyPtr[30] ^ expKeyPtr[27];


// Round 8
tmp = expKeyPtr[31];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[8];

expKeyPtr[32] = tmp ^ expKeyPtr[28];
expKeyPtr[33] = expKeyPtr[32] ^ expKeyPtr[29];
expKeyPtr[34] = expKeyPtr[33] ^ expKeyPtr[30];
expKeyPtr[35] = expKeyPtr[34] ^ expKeyPtr[31];


// Round 9
tmp = expKeyPtr[35];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[9];

expKeyPtr[36] = tmp ^ expKeyPtr[32];
expKeyPtr[37] = expKeyPtr[36] ^ expKeyPtr[33];
expKeyPtr[38] = expKeyPtr[37] ^ expKeyPtr[34];
expKeyPtr[39] = expKeyPtr[38] ^ expKeyPtr[35];


// Round 10
tmp = expKeyPtr[39];

tmp = (tmp>>8)^(tmp<<24);

tmp = (SBOX[tmp>>24]<<24) ^
(SBOX[(tmp>>16)&0xff]<<16) ^
(SBOX[(tmp>>8)&0xff]<<8) ^
(SBOX[tmp&0xff]);

tmp ^= RCON[10];

expKeyPtr[40] = tmp ^ expKeyPtr[36];
expKeyPtr[41] = expKeyPtr[40] ^ expKeyPtr[37];
expKeyPtr[42] = expKeyPtr[41] ^ expKeyPtr[38];
expKeyPtr[43] = expKeyPtr[42] ^ expKeyPtr[39];
*/

// Done with key scheduling
}


// Each thread in a work group copy one entry of each T-table inside shared memory.
// That means that at least 256 work items per-workgroup must be launched. This also
// implies a min file size of 4KB
// TODO: generalize to arbitrary file size - work group size?
// TODO: handle cases were file size is not a multiple of 256, that is, there could be
// workgroups with size less than 256
if (idx<WG_SIZE)
{
T0[idx] = gT0[idx];
T1[idx] = gT1[idx];
T2[idx] = gT2[idx];
T3[idx] = gT3[idx];
}

barrier(CLK_LOCAL_MEM_FENCE);


// TODO: async copy to local memory during key scheduling
// Get single plaintext 128-bit block to encrypt
state[0] = plainPtr[gIdx<<2];
state[1] = plainPtr[1 + (gIdx<<2)];
state[2] = plainPtr[2 + (gIdx<<2)];
state[3] = plainPtr[3 + (gIdx<<2)];


//----------------------------------------------------------------/
// II - Perform initial round /
//----------------------------------------------------------------/
// AddRoundKey: combine each byte of the block with the bytes of the
// first round key using an XOR operation
state[0] ^= expKeyPtr[0];
state[1] ^= expKeyPtr[1];
state[2] ^= expKeyPtr[2];
state[3] ^= expKeyPtr[3];


//----------------------------------------------------------------/
// III - Perform middle rounds /
//----------------------------------------------------------------/
// Round 1
tmpState[0]= T0[(state[0]&0xff)] ^
T1[(state[1]>>8)&0xff] ^
T2[(state[2]>>16)&0xff] ^
T3[(state[3])>>24] ^ expKeyPtr[4];
tmpState[1]= T0[(state[1]&0xff)] ^
T1[(state[2]>>8)&0xff] ^
T2[(state[3]>>16)&0xff] ^
T3[(state[0])>>24] ^ expKeyPtr[5];
tmpState[2]= T0[(state[2]&0xff)] ^
T1[(state[3]>>8)&0xff] ^
T2[(state[0]>>16)&0xff] ^
T3[(state[1])>>24] ^ expKeyPtr[6];
tmpState[3]= T0[(state[3]&0xff)] ^
T1[(state[0]>>8)&0xff] ^
T2[(state[1]>>16)&0xff] ^
T3[(state[2])>>24] ^ expKeyPtr[7];

// Round 2
state[0]= T0[(tmpState[0]&0xff)] ^
T1[(tmpState[1]>>8)&0xff] ^
T2[(tmpState[2]>>16)&0xff] ^
T3[(tmpState[3])>>24] ^ expKeyPtr[8];
state[1]= T0[(tmpState[1]&0xff)] ^
T1[(tmpState[2]>>8)&0xff] ^
T2[(tmpState[3]>>16)&0xff] ^
T3[(tmpState[0])>>24] ^ expKeyPtr[9];
state[2]= T0[(tmpState[2]&0xff)] ^
T1[(tmpState[3]>>8)&0xff] ^
T2[(tmpState[0]>>16)&0xff] ^
T3[(tmpState[1])>>24] ^ expKeyPtr[10];
state[3]= T0[(tmpState[3]&0xff)] ^
T1[(tmpState[0]>>8)&0xff] ^
T2[(tmpState[1]>>16)&0xff] ^
T3[(tmpState[2])>>24] ^ expKeyPtr[11];

// Round 3
tmpState[0]= T0[(state[0]&0xff)] ^
T1[(state[1]>>8)&0xff] ^
T2[(state[2]>>16)&0xff] ^
T3[(state[3])>>24] ^ expKeyPtr[12];
tmpState[1]= T0[(state[1]&0xff)] ^
T1[(state[2]>>8)&0xff] ^
T2[(state[3]>>16)&0xff] ^
T3[(state[0])>>24] ^ expKeyPtr[13];
tmpState[2]= T0[(state[2]&0xff)] ^
T1[(state[3]>>8)&0xff] ^
T2[(state[0]>>16)&0xff] ^
T3[(state[1])>>24] ^ expKeyPtr[14];
tmpState[3]= T0[(state[3]&0xff)] ^
T1[(state[0]>>8)&0xff] ^
T2[(state[1]>>16)&0xff] ^
T3[(state[2])>>24] ^ expKeyPtr[15];

// Round 4
state[0]= T0[(tmpState[0]&0xff)] ^
T1[(tmpState[1]>>8)&0xff] ^
T2[(tmpState[2]>>16)&0xff] ^
T3[(tmpState[3])>>24] ^ expKeyPtr[16];
state[1]= T0[(tmpState[1]&0xff)] ^
T1[(tmpState[2]>>8)&0xff] ^
T2[(tmpState[3]>>16)&0xff] ^
T3[(tmpState[0])>>24] ^ expKeyPtr[17];
state[2]= T0[(tmpState[2]&0xff)] ^
T1[(tmpState[3]>>8)&0xff] ^
T2[(tmpState[0]>>16)&0xff] ^
T3[(tmpState[1])>>24] ^ expKeyPtr[18];
state[3]= T0[(tmpState[3]&0xff)] ^
T1[(tmpState[0]>>8)&0xff] ^
T2[(tmpState[1]>>16)&0xff] ^
T3[(tmpState[2])>>24] ^ expKeyPtr[19];

// Round 5
tmpState[0]= T0[(state[0]&0xff)] ^
T1[(state[1]>>8)&0xff] ^
T2[(state[2]>>16)&0xff] ^
T3[(state[3])>>24] ^ expKeyPtr[20];
tmpState[1]= T0[(state[1]&0xff)] ^
T1[(state[2]>>8)&0xff] ^
T2[(state[3]>>16)&0xff] ^
T3[(state[0])>>24] ^ expKeyPtr[21];
tmpState[2]= T0[(state[2]&0xff)] ^
T1[(state[3]>>8)&0xff] ^
T2[(state[0]>>16)&0xff] ^
T3[(state[1])>>24] ^ expKeyPtr[22];
tmpState[3]= T0[(state[3]&0xff)] ^
T1[(state[0]>>8)&0xff] ^
T2[(state[1]>>16)&0xff] ^
T3[(state[2])>>24] ^ expKeyPtr[23];

// Round 6
state[0]= T0[(tmpState[0]&0xff)] ^
T1[(tmpState[1]>>8)&0xff] ^
T2[(tmpState[2]>>16)&0xff] ^
T3[(tmpState[3])>>24] ^ expKeyPtr[24];
state[1]= T0[(tmpState[1]&0xff)] ^
T1[(tmpState[2]>>8)&0xff] ^
T2[(tmpState[3]>>16)&0xff] ^
T3[(tmpState[0])>>24] ^ expKeyPtr[25];
state[2]= T0[(tmpState[2]&0xff)] ^
T1[(tmpState[3]>>8)&0xff] ^
T2[(tmpState[0]>>16)&0xff] ^
T3[(tmpState[1])>>24] ^ expKeyPtr[26];
state[3]= T0[(tmpState[3]&0xff)] ^
T1[(tmpState[0]>>8)&0xff] ^
T2[(tmpState[1]>>16)&0xff] ^
T3[(tmpState[2])>>24] ^ expKeyPtr[27];

// Round 7
tmpState[0]= T0[(state[0]&0xff)] ^
T1[(state[1]>>8)&0xff] ^
T2[(state[2]>>16)&0xff] ^
T3[(state[3])>>24] ^ expKeyPtr[28];
tmpState[1]= T0[(state[1]&0xff)] ^
T1[(state[2]>>8)&0xff] ^
T2[(state[3]>>16)&0xff] ^
T3[(state[0])>>24] ^ expKeyPtr[29];
tmpState[2]= T0[(state[2]&0xff)] ^
T1[(state[3]>>8)&0xff] ^
T2[(state[0]>>16)&0xff] ^
T3[(state[1])>>24] ^ expKeyPtr[30];
tmpState[3]= T0[(state[3]&0xff)] ^
T1[(state[0]>>8)&0xff] ^
T2[(state[1]>>16)&0xff] ^
T3[(state[2])>>24] ^ expKeyPtr[31];

// Round 8
state[0]= T0[(tmpState[0]&0xff)] ^
T1[(tmpState[1]>>8)&0xff] ^
T2[(tmpState[2]>>16)&0xff] ^
T3[(tmpState[3])>>24] ^ expKeyPtr[32];
state[1]= T0[(tmpState[1]&0xff)] ^
T1[(tmpState[2]>>8)&0xff] ^
T2[(tmpState[3]>>16)&0xff] ^
T3[(tmpState[0])>>24] ^ expKeyPtr[33];
state[2]= T0[(tmpState[2]&0xff)] ^
T1[(tmpState[3]>>8)&0xff] ^
T2[(tmpState[0]>>16)&0xff] ^
T3[(tmpState[1])>>24] ^ expKeyPtr[34];
state[3]= T0[(tmpState[3]&0xff)] ^
T1[(tmpState[0]>>8)&0xff] ^
T2[(tmpState[1]>>16)&0xff] ^
T3[(tmpState[2])>>24] ^ expKeyPtr[35];


// Round 9
tmpState[0]= T0[(state[0]&0xff)] ^
T1[(state[1]>>8)&0xff] ^
T2[(state[2]>>16)&0xff] ^
T3[(state[3])>>24] ^ expKeyPtr[36];
tmpState[1]= T0[(state[1]&0xff)] ^
T1[(state[2]>>8)&0xff] ^
T2[(state[3]>>16)&0xff] ^
T3[(state[0])>>24] ^ expKeyPtr[37];
tmpState[2]= T0[(state[2]&0xff)] ^
T1[(state[3]>>8)&0xff] ^
T2[(state[0]>>16)&0xff] ^
T3[(state[1])>>24] ^ expKeyPtr[38];
tmpState[3]= T0[(state[3]&0xff)] ^
T1[(state[0]>>8)&0xff] ^
T2[(state[1]>>16)&0xff] ^
T3[(state[2])>>24] ^ expKeyPtr[39];


//----------------------------------------------------------------/
// III - Perform final round /
//----------------------------------------------------------------/
state[0]= (T2[(tmpState[0]&0xff)] &0x000000ff) ^
(T3[(tmpState[1]>>8)&0xff] &0x0000ff00) ^
(T0[(tmpState[2]>>16)&0xff] &0x00ff0000) ^
(T1[(tmpState[3])>>24] &0xff000000) ^ expKeyPtr[40];
state[1]= (T2[(tmpState[1]&0xff)] &0x000000ff) ^
(T3[(tmpState[2]>>8)&0xff] &0x0000ff00) ^
(T0[(tmpState[3]>>16)&0xff] &0x00ff0000) ^
(T1[(tmpState[0])>>24] &0xff000000) ^ expKeyPtr[41];
state[2]= (T2[(tmpState[2]&0xff)] &0x000000ff) ^
(T3[(tmpState[3]>>8)&0xff] &0x0000ff00) ^
(T0[(tmpState[0]>>16)&0xff] &0x00ff0000) ^
(T1[(tmpState[1])>>24] &0xff000000) ^ expKeyPtr[42];
state[3]= (T2[(tmpState[3]&0xff)] &0x000000ff) ^
(T3[(tmpState[0]>>8)&0xff] &0x0000ff00) ^
(T0[(tmpState[1]>>16)&0xff] &0x00ff0000) ^
(T1[(tmpState[2])>>24] &0xff000000) ^ expKeyPtr[43];

// DONE WITH ENCRYPTION


// Copy state back to global memory
cipherPtr[gIdx<<2] = state[0];
cipherPtr[1 + (gIdx<<2)] = state[1];
cipherPtr[2 + (gIdx<<2)] = state[2];
cipherPtr[3 + (gIdx<<2)] = state[3];

}

Change log

r42 by muogoro on Sep 17, 2012   Diff
Fix work-group size
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Older revisions

r27 by mUogoro on Feb 28, 2012   Diff
Fix latency reporting. Execution time
and latency exported by testspeed
script.
r26 by muogoro on Feb 28, 2012   Diff
Fix bug in AES first round
r25 by muogoro on Feb 27, 2012   Diff
Code cleanup. Added correctness test
to testspeed script.
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