native.intel.ccm.ccm128.c Maven / Gradle / Ivy
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The Long Term Stable (LTS) Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains the JCA/JCE provider and low-level API for the BC LTS version 2.73.7 for Java 8 and later.
//
//
#ifndef BC_AES_CCM128_H
#define BC_AES_CCM128_H
#include
#include "ccm.h"
static inline void
aes_ctr128_wide(__m128i *d0, __m128i *d1, __m128i *d2, __m128i *d3, __m128i *d4, __m128i *d5, __m128i *d6, __m128i *d7,
__m128i *roundKeys, const __m128i ctr, const uint32_t max_rounds, const uint32_t blocks) {
__m128i t0, t1, t2, t3, t4, t5, t6, t7;
if (blocks == 8) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t3 = _mm_add_epi64(ctr, *THREE);
t4 = _mm_add_epi64(ctr, *FOUR);
t5 = _mm_add_epi64(ctr, *FIVE);
t6 = _mm_add_epi64(ctr, *SIX);
t7 = _mm_add_epi64(ctr, *SEVEN);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
t3 = _mm_shuffle_epi8(t3, *SWAP_ENDIAN_128);
t4 = _mm_shuffle_epi8(t4, *SWAP_ENDIAN_128);
t5 = _mm_shuffle_epi8(t5, *SWAP_ENDIAN_128);
t6 = _mm_shuffle_epi8(t6, *SWAP_ENDIAN_128);
t7 = _mm_shuffle_epi8(t7, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
t3 = _mm_xor_si128(t3, rkFirst);
t4 = _mm_xor_si128(t4, rkFirst);
t5 = _mm_xor_si128(t5, rkFirst);
t6 = _mm_xor_si128(t6, rkFirst);
t7 = _mm_xor_si128(t7, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
t3 = _mm_aesenc_si128(t3, rk);
t4 = _mm_aesenc_si128(t4, rk);
t5 = _mm_aesenc_si128(t5, rk);
t6 = _mm_aesenc_si128(t6, rk);
t7 = _mm_aesenc_si128(t7, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
t3 = _mm_aesenclast_si128(t3, rkLast);
t4 = _mm_aesenclast_si128(t4, rkLast);
t5 = _mm_aesenclast_si128(t5, rkLast);
t6 = _mm_aesenclast_si128(t6, rkLast);
t7 = _mm_aesenclast_si128(t7, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
*d3 = _mm_xor_si128(*d3, t3);
*d4 = _mm_xor_si128(*d4, t4);
*d5 = _mm_xor_si128(*d5, t5);
*d6 = _mm_xor_si128(*d6, t6);
*d7 = _mm_xor_si128(*d7, t7);
} else if (blocks == 7) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t3 = _mm_add_epi64(ctr, *THREE);
t4 = _mm_add_epi64(ctr, *FOUR);
t5 = _mm_add_epi64(ctr, *FIVE);
t6 = _mm_add_epi64(ctr, *SIX);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
t3 = _mm_shuffle_epi8(t3, *SWAP_ENDIAN_128);
t4 = _mm_shuffle_epi8(t4, *SWAP_ENDIAN_128);
t5 = _mm_shuffle_epi8(t5, *SWAP_ENDIAN_128);
t6 = _mm_shuffle_epi8(t6, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
t3 = _mm_xor_si128(t3, rkFirst);
t4 = _mm_xor_si128(t4, rkFirst);
t5 = _mm_xor_si128(t5, rkFirst);
t6 = _mm_xor_si128(t6, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
t3 = _mm_aesenc_si128(t3, rk);
t4 = _mm_aesenc_si128(t4, rk);
t5 = _mm_aesenc_si128(t5, rk);
t6 = _mm_aesenc_si128(t6, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
t3 = _mm_aesenclast_si128(t3, rkLast);
t4 = _mm_aesenclast_si128(t4, rkLast);
t5 = _mm_aesenclast_si128(t5, rkLast);
t6 = _mm_aesenclast_si128(t6, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
*d3 = _mm_xor_si128(*d3, t3);
*d4 = _mm_xor_si128(*d4, t4);
*d5 = _mm_xor_si128(*d5, t5);
*d6 = _mm_xor_si128(*d6, t6);
} else if (blocks == 6) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t3 = _mm_add_epi64(ctr, *THREE);
t4 = _mm_add_epi64(ctr, *FOUR);
t5 = _mm_add_epi64(ctr, *FIVE);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
t3 = _mm_shuffle_epi8(t3, *SWAP_ENDIAN_128);
t4 = _mm_shuffle_epi8(t4, *SWAP_ENDIAN_128);
t5 = _mm_shuffle_epi8(t5, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
t3 = _mm_xor_si128(t3, rkFirst);
t4 = _mm_xor_si128(t4, rkFirst);
t5 = _mm_xor_si128(t5, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
t3 = _mm_aesenc_si128(t3, rk);
t4 = _mm_aesenc_si128(t4, rk);
t5 = _mm_aesenc_si128(t5, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
t3 = _mm_aesenclast_si128(t3, rkLast);
t4 = _mm_aesenclast_si128(t4, rkLast);
t5 = _mm_aesenclast_si128(t5, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
*d3 = _mm_xor_si128(*d3, t3);
*d4 = _mm_xor_si128(*d4, t4);
*d5 = _mm_xor_si128(*d5, t5);
} else if (blocks == 5) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t3 = _mm_add_epi64(ctr, *THREE);
t4 = _mm_add_epi64(ctr, *FOUR);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
t3 = _mm_shuffle_epi8(t3, *SWAP_ENDIAN_128);
t4 = _mm_shuffle_epi8(t4, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
t3 = _mm_xor_si128(t3, rkFirst);
t4 = _mm_xor_si128(t4, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
t3 = _mm_aesenc_si128(t3, rk);
t4 = _mm_aesenc_si128(t4, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
t3 = _mm_aesenclast_si128(t3, rkLast);
t4 = _mm_aesenclast_si128(t4, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
*d3 = _mm_xor_si128(*d3, t3);
*d4 = _mm_xor_si128(*d4, t4);
} else if (blocks == 4) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t3 = _mm_add_epi64(ctr, *THREE);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
t3 = _mm_shuffle_epi8(t3, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
t3 = _mm_xor_si128(t3, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
t3 = _mm_aesenc_si128(t3, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
t3 = _mm_aesenclast_si128(t3, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
*d3 = _mm_xor_si128(*d3, t3);
} else if (blocks == 3) {
t1 = _mm_add_epi64(ctr, *ONE);
t2 = _mm_add_epi64(ctr, *TWO);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
t2 = _mm_shuffle_epi8(t2, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
t2 = _mm_xor_si128(t2, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
t2 = _mm_aesenc_si128(t2, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
t2 = _mm_aesenclast_si128(t2, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
*d2 = _mm_xor_si128(*d2, t2);
} else if (blocks == 2) {
t1 = _mm_add_epi64(ctr, *ONE);
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
t1 = _mm_shuffle_epi8(t1, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
t1 = _mm_xor_si128(t1, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
t1 = _mm_aesenc_si128(t1, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
t1 = _mm_aesenclast_si128(t1, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
*d1 = _mm_xor_si128(*d1, t1);
} else {
t0 = _mm_shuffle_epi8(ctr, *SWAP_ENDIAN_128);
const __m128i rkFirst = roundKeys[0];
t0 = _mm_xor_si128(t0, rkFirst);
int round;
for (round = 1; round < max_rounds; round++) {
const __m128i rk = roundKeys[round];
t0 = _mm_aesenc_si128(t0, rk);
}
const __m128i rkLast = roundKeys[round];
t0 = _mm_aesenclast_si128(t0, rkLast);
*d0 = _mm_xor_si128(*d0, t0);
}
}
bool ccm_ctr_process_bytes(ccm_ctx *pCtr, unsigned char *src, size_t len, unsigned char *dest, size_t *written) {
unsigned char *destStart = dest;
if (pCtr->buf_pos == 0 && len >= 16) {
while (len >= CTR_BLOCK_SIZE) {
const uint64_t ctr = pCtr->ctr;
if (len >= 8 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 8)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
__m128i d3 = _mm_loadu_si128((__m128i *) &src[3 * 16]);
__m128i d4 = _mm_loadu_si128((__m128i *) &src[4 * 16]);
__m128i d5 = _mm_loadu_si128((__m128i *) &src[5 * 16]);
__m128i d6 = _mm_loadu_si128((__m128i *) &src[6 * 16]);
__m128i d7 = _mm_loadu_si128((__m128i *) &src[7 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d3,
&d4, &d5, &d6, &d7,
pCtr->roundKeys, c0, pCtr->num_rounds,
8);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
_mm_storeu_si128((__m128i *) &dest[3 * 16], d3);
_mm_storeu_si128((__m128i *) &dest[4 * 16], d4);
_mm_storeu_si128((__m128i *) &dest[5 * 16], d5);
_mm_storeu_si128((__m128i *) &dest[6 * 16], d6);
_mm_storeu_si128((__m128i *) &dest[7 * 16], d7);
len -= 8 * CTR_BLOCK_SIZE;
src += 8 * CTR_BLOCK_SIZE;
dest += 8 * CTR_BLOCK_SIZE;
} else if (len >= 7 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 7)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
__m128i d3 = _mm_loadu_si128((__m128i *) &src[3 * 16]);
__m128i d4 = _mm_loadu_si128((__m128i *) &src[4 * 16]);
__m128i d5 = _mm_loadu_si128((__m128i *) &src[5 * 16]);
__m128i d6 = _mm_loadu_si128((__m128i *) &src[6 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d3,
&d4, &d5, &d6, &d6,
pCtr->roundKeys, c0, pCtr->num_rounds,
7);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
_mm_storeu_si128((__m128i *) &dest[3 * 16], d3);
_mm_storeu_si128((__m128i *) &dest[4 * 16], d4);
_mm_storeu_si128((__m128i *) &dest[5 * 16], d5);
_mm_storeu_si128((__m128i *) &dest[6 * 16], d6);
len -= 7 * CTR_BLOCK_SIZE;
src += 7 * CTR_BLOCK_SIZE;
dest += 7 * CTR_BLOCK_SIZE;
} else if (len >= 6 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 6)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
__m128i d3 = _mm_loadu_si128((__m128i *) &src[3 * 16]);
__m128i d4 = _mm_loadu_si128((__m128i *) &src[4 * 16]);
__m128i d5 = _mm_loadu_si128((__m128i *) &src[5 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d3,
&d4, &d5, &d5, &d5,
pCtr->roundKeys, c0, pCtr->num_rounds,
6);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
_mm_storeu_si128((__m128i *) &dest[3 * 16], d3);
_mm_storeu_si128((__m128i *) &dest[4 * 16], d4);
_mm_storeu_si128((__m128i *) &dest[5 * 16], d5);
len -= 6 * CTR_BLOCK_SIZE;
src += 6 * CTR_BLOCK_SIZE;
dest += 6 * CTR_BLOCK_SIZE;
} else if (len >= 5 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 5)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
__m128i d3 = _mm_loadu_si128((__m128i *) &src[3 * 16]);
__m128i d4 = _mm_loadu_si128((__m128i *) &src[4 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d3,
&d4, &d4, &d4, &d4,
pCtr->roundKeys, c0, pCtr->num_rounds,
5);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
_mm_storeu_si128((__m128i *) &dest[3 * 16], d3);
_mm_storeu_si128((__m128i *) &dest[4 * 16], d4);
len -= 5 * CTR_BLOCK_SIZE;
src += 5 * CTR_BLOCK_SIZE;
dest += 5 * CTR_BLOCK_SIZE;
} else if (len >= 4 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 4)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
__m128i d3 = _mm_loadu_si128((__m128i *) &src[3 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d3,
&d3, &d3, &d3, &d3,
pCtr->roundKeys, c0, pCtr->num_rounds,
4);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
_mm_storeu_si128((__m128i *) &dest[3 * 16], d3);
len -= 4 * CTR_BLOCK_SIZE;
src += 4 * CTR_BLOCK_SIZE;
dest += 4 * CTR_BLOCK_SIZE;
} else if (len >= 3 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 3)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
__m128i d2 = _mm_loadu_si128((__m128i *) &src[2 * 16]);
aes_ctr128_wide(
&d0, &d1, &d2, &d2,
&d2, &d2, &d2, &d2,
pCtr->roundKeys, c0, pCtr->num_rounds,
3);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
_mm_storeu_si128((__m128i *) &dest[2 * 16], d2);
len -= 3 * CTR_BLOCK_SIZE;
src += 3 * CTR_BLOCK_SIZE;
dest += 3 * CTR_BLOCK_SIZE;
} else if (len >= 2 * CTR_BLOCK_SIZE) {
if (!ccm_incCtr(pCtr, 2)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
__m128i d1 = _mm_loadu_si128((__m128i *) &src[1 * 16]);
aes_ctr128_wide(
&d0, &d1, &d1, &d1,
&d1, &d1, &d1, &d1,
pCtr->roundKeys, c0, pCtr->num_rounds,
2);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
_mm_storeu_si128((__m128i *) &dest[1 * 16], d1);
len -= 2 * CTR_BLOCK_SIZE;
src += 2 * CTR_BLOCK_SIZE;
dest += 2 * CTR_BLOCK_SIZE;
} else {
if (!ccm_incCtr(pCtr, 1)) {
return false;
}
const __m128i c0 = _mm_xor_si128(pCtr->IV_le, _mm_set_epi64x(0, (int64_t) ctr));
__m128i d0 = _mm_loadu_si128((__m128i *) &src[0 * 16]);
aes_ctr128_wide(
&d0, &d0, &d0, &d0,
&d0, &d0, &d0, &d0,
pCtr->roundKeys, c0, pCtr->num_rounds,
1);
_mm_storeu_si128((__m128i *) &dest[0 * 16], d0);
len -= CTR_BLOCK_SIZE;
src += CTR_BLOCK_SIZE;
dest += CTR_BLOCK_SIZE;
}
}
}
// Process trailing bytes
while (len > 0) {
unsigned char v = *src;
if (!ccm_ctr_process_byte(pCtr, &v)) {
return false;
}
*dest = v;
src++;
dest++;
len--;
}
*written = (size_t) (dest - destStart);
return true;
}
#endif
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