/* Encryption key setup */
static void aes_key_setup_enc(__m128i rk[], const u8* cipherKey, int keylen)
{
switch (keylen) {
case 16:
{
/* 128 bit key setup */
rk[0] = _mm_loadu_si128((const __m128i*) cipherKey);
rk[1] = KEYEXP128(rk[0], 0x01);
rk[2] = KEYEXP128(rk[1], 0x02);
rk[3] = KEYEXP128(rk[2], 0x04);
rk[4] = KEYEXP128(rk[3], 0x08);
rk[5] = KEYEXP128(rk[4], 0x10);
rk[6] = KEYEXP128(rk[5], 0x20);
rk[7] = KEYEXP128(rk[6], 0x40);
rk[8] = KEYEXP128(rk[7], 0x80);
rk[9] = KEYEXP128(rk[8], 0x1B);
rk[10] = KEYEXP128(rk[9], 0x36);
break;
}
case 24:
{
/* 192 bit key setup */
__m128i temp[2];
rk[0] = _mm_loadu_si128((const __m128i*) cipherKey);
rk[1] = _mm_loadu_si128((const __m128i*) (cipherKey+16));
temp[0] = KEYEXP192(rk[0], rk[1], 0x01);
temp[1] = KEYEXP192_2(temp[0], rk[1]);
rk[1] = (__m128i)_mm_shuffle_pd((__m128d)rk[1], (__m128d)temp[0], 0);
rk[2] = (__m128i)_mm_shuffle_pd((__m128d)temp[0], (__m128d)temp[1], 1);
rk[3] = KEYEXP192(temp[0], temp[1], 0x02);
rk[4] = KEYEXP192_2(rk[3], temp[1]);
temp[0] = KEYEXP192(rk[3], rk[4], 0x04);
temp[1] = KEYEXP192_2(temp[0], rk[4]);
rk[4] = (__m128i)_mm_shuffle_pd((__m128d)rk[4], (__m128d)temp[0], 0);
rk[5] = (__m128i)_mm_shuffle_pd((__m128d)temp[0], (__m128d)temp[1], 1);
rk[6] = KEYEXP192(temp[0], temp[1], 0x08);
rk[7] = KEYEXP192_2(rk[6], temp[1]);
temp[0] = KEYEXP192(rk[6], rk[7], 0x10);
temp[1] = KEYEXP192_2(temp[0], rk[7]);
rk[7] = (__m128i)_mm_shuffle_pd((__m128d)rk[7], (__m128d)temp[0], 0);
rk[8] = (__m128i)_mm_shuffle_pd((__m128d)temp[0], (__m128d)temp[1], 1);
rk[9] = KEYEXP192(temp[0], temp[1], 0x20);
rk[10] = KEYEXP192_2(rk[9], temp[1]);
temp[0] = KEYEXP192(rk[9], rk[10], 0x40);
temp[1] = KEYEXP192_2(temp[0], rk[10]);
rk[10] = (__m128i)_mm_shuffle_pd((__m128d)rk[10], (__m128d) temp[0], 0);
rk[11] = (__m128i)_mm_shuffle_pd((__m128d)temp[0],(__m128d) temp[1], 1);
rk[12] = KEYEXP192(temp[0], temp[1], 0x80);
break;
}
case 32:
{
/* 256 bit key setup */
rk[0] = _mm_loadu_si128((const __m128i*) cipherKey);
rk[1] = _mm_loadu_si128((const __m128i*) (cipherKey+16));
rk[2] = KEYEXP256(rk[0], rk[1], 0x01);
rk[3] = KEYEXP256_2(rk[1], rk[2]);
rk[4] = KEYEXP256(rk[2], rk[3], 0x02);
rk[5] = KEYEXP256_2(rk[3], rk[4]);
rk[6] = KEYEXP256(rk[4], rk[5], 0x04);
rk[7] = KEYEXP256_2(rk[5], rk[6]);
rk[8] = KEYEXP256(rk[6], rk[7], 0x08);
rk[9] = KEYEXP256_2(rk[7], rk[8]);
rk[10] = KEYEXP256(rk[8], rk[9], 0x10);
rk[11] = KEYEXP256_2(rk[9], rk[10]);
rk[12] = KEYEXP256(rk[10], rk[11], 0x20);
rk[13] = KEYEXP256_2(rk[11], rk[12]);
rk[14] = KEYEXP256(rk[12], rk[13], 0x40);
break;
}
}
}
/* Encryption key setup */
static void aes_key_setup_enc(__m128i rk[], const uint8_t* cipherKey, int keylen)
{
switch (keylen) {
case 16:
{
/* 128 bit key setup */
rk[0] = _mm_loadu_si128((const __m128i*) cipherKey);
rk[1] = KEYEXP128(rk[0], 0x01);
rk[2] = KEYEXP128(rk[1], 0x02);
rk[3] = KEYEXP128(rk[2], 0x04);
rk[4] = KEYEXP128(rk[3], 0x08);
rk[5] = KEYEXP128(rk[4], 0x10);
rk[6] = KEYEXP128(rk[5], 0x20);
rk[7] = KEYEXP128(rk[6], 0x40);
rk[8] = KEYEXP128(rk[7], 0x80);
rk[9] = KEYEXP128(rk[8], 0x1B);
rk[10] = KEYEXP128(rk[9], 0x36);
break;
}
case 24:
{
/* 192 bit key setup */
uint8_t key[24];
__m128i temp[2];
memcpy(key, cipherKey, 24);
rk[0] = _mm_loadu_si128((const __m128i*) key);
rk[1] = _mm_loadu_si128((const __m128i*) (key+16));
temp[0] = KEYEXP192(rk[0], rk[1], 0x01);
temp[1] = KEYEXP192_2(temp[0], rk[1]);
rk[1] = SHUFFLE128_0(rk[1], temp[0]);
rk[2] = SHUFFLE128_1(temp[0], temp[1]);
rk[3] = KEYEXP192(temp[0], temp[1], 0x02);
rk[4] = KEYEXP192_2(rk[3], temp[1]);
temp[0] = KEYEXP192(rk[3], rk[4], 0x04);
temp[1] = KEYEXP192_2(temp[0], rk[4]);
rk[4] = SHUFFLE128_0(rk[4], temp[0]);
rk[5] = SHUFFLE128_1(temp[0], temp[1]);
rk[6] = KEYEXP192(temp[0], temp[1], 0x08);
rk[7] = KEYEXP192_2(rk[6], temp[1]);
temp[0] = KEYEXP192(rk[6], rk[7], 0x10);
temp[1] = KEYEXP192_2(temp[0], rk[7]);
rk[7] = SHUFFLE128_0(rk[7], temp[0]);
rk[8] = SHUFFLE128_1(temp[0], temp[1]);
rk[9] = KEYEXP192(temp[0], temp[1], 0x20);
rk[10] = KEYEXP192_2(rk[9], temp[1]);
temp[0] = KEYEXP192(rk[9], rk[10], 0x40);
temp[1] = KEYEXP192_2(temp[0], rk[10]);
rk[10] = SHUFFLE128_0(rk[10], temp[0]);
rk[11] = SHUFFLE128_1(temp[0], temp[1]);
rk[12] = KEYEXP192(temp[0], temp[1], 0x80);
break;
}
case 32:
{
/* 256 bit key setup */
rk[0] = _mm_loadu_si128((const __m128i*) cipherKey);
rk[1] = _mm_loadu_si128((const __m128i*) (cipherKey+16));
rk[2] = KEYEXP256(rk[0], rk[1], 0x01);
rk[3] = KEYEXP256_2(rk[1], rk[2]);
rk[4] = KEYEXP256(rk[2], rk[3], 0x02);
rk[5] = KEYEXP256_2(rk[3], rk[4]);
rk[6] = KEYEXP256(rk[4], rk[5], 0x04);
rk[7] = KEYEXP256_2(rk[5], rk[6]);
rk[8] = KEYEXP256(rk[6], rk[7], 0x08);
rk[9] = KEYEXP256_2(rk[7], rk[8]);
rk[10] = KEYEXP256(rk[8], rk[9], 0x10);
rk[11] = KEYEXP256_2(rk[9], rk[10]);
rk[12] = KEYEXP256(rk[10], rk[11], 0x20);
rk[13] = KEYEXP256_2(rk[11], rk[12]);
rk[14] = KEYEXP256(rk[12], rk[13], 0x40);
break;
}
}
}
