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| #include <wmmintrin.h>
#include<stdio.h>
#include <stdint.h>
void aes_encrypt_array(__m128i* data, int num_elements, __m128i* rkeys) {
unsigned char key1[] = { 0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xF0 };
unsigned char key2[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
__m128i key1_m128i = _mm_loadu_si128((__m128i*)key1);
__m128i key2_m128i = _mm_loadu_si128((__m128i*)key2);
for (int index = 0; index < num_elements; ++index) {
__m128i state = _mm_loadu_si128(&data[index]);
if (index == 0) {
state = _mm_xor_si128(state, _mm_xor_si128(key1_m128i, key2_m128i));
}
else {
__m128i previous_encrypted = _mm_loadu_si128(&data[index - 1]);
state = _mm_xor_si128(state, _mm_xor_si128(previous_encrypted, key2_m128i));
}
for (int i = 0; i < 13; ++i) {
state = _mm_aesenc_si128(state, rkeys[i]);
}
state = _mm_aesenclast_si128(state, rkeys[13]);
_mm_storeu_si128(&data[index], state);
}
}
void aes_decrypt_array(__m128i* data, int num_elements, __m128i* rkeys) {
unsigned char key1[] = { 0xFF, 0xFE, 0xFD, 0xFC, 0xFB, 0xFA, 0xF9, 0xF8, 0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2, 0xF1, 0xF0 };
unsigned char key2[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
__m128i key1_m128i = _mm_loadu_si128((__m128i*)key1);
__m128i key2_m128i = _mm_loadu_si128((__m128i*)key2);
__m128i initial_key = _mm_xor_si128(key1_m128i, key2_m128i);
for (int index = num_elements - 1; index >= 0; --index) {
__m128i state = _mm_loadu_si128(&data[index]);
state = _mm_xor_si128(state, rkeys[13]);
for (int i = 12; i >= 0; --i) {
state = _mm_aesdec_si128(state, rkeys[i]);
}
if (index == 0) {
state = _mm_aesdeclast_si128(state, initial_key);
}
else {
__m128i previous_encrypted = _mm_loadu_si128(&data[index - 1]);
__m128i temp_key = _mm_xor_si128(previous_encrypted, key2_m128i);
state = _mm_aesdeclast_si128(state, temp_key);
}
_mm_storeu_si128(&data[index], state);
}
}
void generateDecryptionKeys(const __m128i* encryptionKeys, __m128i* decryptionKeys, int nr) {
decryptionKeys[nr - 1] = encryptionKeys[nr - 1];
for (int i = 0; i < nr - 1; ++i) {
decryptionKeys[i] = _mm_aesimc_si128(encryptionKeys[i]);
}
}
int main(void) {
unsigned char ciphers[] = { 0x15,0x2a,0x38,0x82,0xcd,0x8a,0x36,0x33,0x54,0x4d,0x22,0x66,0x5c,0xe5,0x8a,0xea,0x1c,0xb2,0x5d,0xb2,0x59,0x64,0x7a,0x7e,0x6d,0x70,0x21,0x2a,0xdd,0x24,0x6b,0x8e,0x38,0x11,0x45,0xa3,0x60,0x3d,0xca,0x8f,0x12,0xb6,0xec,0x9c,0x0f,0x60,0xd9,0x26,0xe9,0x2c,0x83,0x9f,0x61,0x70,0x0f,0xdc,0x78,0x92,0x59,0x39,0x48,0xc1,0xe7,0xc2,0x6b,0x5c,0xba,0x1c,0x43,0xc2,0x86,0x80,0x18,0x62,0x15,0xd2,0x1e,0x0b,0x6b,0x9e,0x17,0x2c,0x14,0xc7,0x41,0x10,0xc4,0x35,0xfe,0x78,0x6f,0xb4,0xfc,0xdd,0xd4,0xaa,0xba,0xdd,0xaa,0x15,0x02,0xb7,0xf7,0x77,0x65,0x43,0xf3,0x78,0xcc,0xee,0x14,0xca,0x53,0x42,0xdf,0x3a,0xec,0xed,0xa6,0x31,0x4a,0x81,0x4d,0xff,0xbe,0x4e,0xc6,0xef,0x17,0x68,0xd0,0x9d,0xb1,0x73,0xff,0x4e,0x24,0xbf,0xec,0xbb,0x55,0xf5,0xaf,0x7d,0x7d,0x6b,0xdf,0x9f,0x9a,0x3b,0x23,0x98,0xb3,0xa4,0xb4,0x1c,0x26,0x5f,0x7a,0x0d };
unsigned char rkeys[] = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
0xB7, 0x73, 0xC2, 0x9F, 0xB3, 0x76, 0xC4, 0x98, 0xBB, 0x7F, 0xCE, 0x93, 0xB7, 0x72, 0xC0, 0x9C,
0xB9, 0x51, 0xA8, 0xCD, 0xAD, 0x44, 0xBE, 0xDA, 0xB5, 0x5D, 0xA4, 0xC1, 0xA9, 0x40, 0xBA, 0xDE,
0x8D, 0x87, 0xDF, 0x4C, 0x3E, 0xF1, 0x1B, 0xD4, 0x85, 0x8E, 0xD5, 0x47, 0x32, 0xFC, 0x15, 0xDB,
0x9A, 0xE1, 0xF1, 0x74, 0x37, 0xA5, 0x4F, 0xAE, 0x82, 0xF8, 0xEB, 0x6F, 0x2B, 0xB8, 0x51, 0xB1,
0xD6, 0x56, 0x17, 0xBD, 0xE8, 0xA7, 0x0C, 0x69, 0x6D, 0x29, 0xD9, 0x2E, 0x5F, 0xD5, 0xCC, 0xF5,
0x55, 0xE2, 0xBA, 0x92, 0x62, 0x47, 0xF5, 0x3C, 0xE0, 0xBF, 0x1E, 0x53, 0xCB, 0x07, 0x4F, 0xE2,
0xA9, 0xD2, 0x8F, 0xA2, 0x41, 0x75, 0x83, 0xCB, 0x2C, 0x5C, 0x5A, 0xE5, 0x73, 0x89, 0x96, 0x10,
0xDA, 0x45, 0x2A, 0x58, 0xB8, 0x02, 0xDF, 0x64, 0x58, 0xBD, 0xC1, 0x37, 0x93, 0xBA, 0x8E, 0xD5,
0x87, 0xCB, 0x8C, 0x7E, 0xC6, 0xBE, 0x0F, 0xB5, 0xEA, 0xE2, 0x55, 0x50, 0x99, 0x6B, 0xC3, 0x40,
0x34, 0x3A, 0x04, 0x51, 0x8C, 0x38, 0xDB, 0x35, 0xD4, 0x85, 0x1A, 0x02, 0x47, 0x3F, 0x94, 0xD7,
0xA7, 0xE9, 0x82, 0xDE, 0x61, 0x57, 0x8D, 0x6B, 0x8B, 0xB5, 0xD8, 0x3B, 0x12, 0xDE, 0x1B, 0x7B,
0xFD, 0x27, 0xAB, 0x70, 0x71, 0x1F, 0x70, 0x45, 0xA5, 0x9A, 0x6A, 0x47, 0xE2, 0xA5, 0xFE, 0x90,
0xC7, 0x52, 0xE2, 0x46, 0xA6, 0x05, 0x6F, 0x2D, 0x2D, 0xB0, 0xB7, 0x16, 0x3F, 0x6E, 0xAC, 0x6D };
uint8_t decryption_keys[224];
generateDecryptionKeys((__m128i*)rkeys, (__m128i*)decryption_keys, 14);
aes_decrypt_array((__m128i*)ciphers, 10, (__m128i*)decryption_keys);
ciphers[159] = '\0';
printf("%s", ciphers);
}
|
