#include <vlib/vlib.h>
#include <vnet/plugin/plugin.h>
#include <vnet/crypto/crypto.h>
-#include <x86intrin.h>
#include <crypto_native/crypto_native.h>
#include <crypto_native/aes.h>
#include <crypto_native/ghash.h>
#pragma GCC optimize ("O3")
#endif
+#ifdef __VAES__
+#define NUM_HI 32
+#else
+#define NUM_HI 8
+#endif
+
typedef struct
{
/* pre-calculated hash key values */
- const __m128i Hi[8];
+ const u8x16 Hi[NUM_HI];
/* extracted AES key */
- const __m128i Ke[15];
-} aes_gcm_key_data_t;
-
-static const __m128i last_byte_one = { 0, 1ULL << 56 };
-static const __m128i zero = { 0, 0 };
-
-static const u8x16 bswap_mask = {
- 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
-};
-
-static const u8x16 byte_mask_scale = {
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
-};
-
-static_always_inline __m128i
-aesni_gcm_bswap (__m128i x)
-{
- return _mm_shuffle_epi8 (x, (__m128i) bswap_mask);
-}
-
-static_always_inline __m128i
-aesni_gcm_byte_mask (__m128i x, u8 n_bytes)
-{
- u8x16 mask = u8x16_is_greater (u8x16_splat (n_bytes), byte_mask_scale);
-
- return _mm_blendv_epi8 (zero, x, (__m128i) mask);
-}
-
-static_always_inline __m128i
-aesni_gcm_load_partial (__m128i * p, int n_bytes)
-{
- ASSERT (n_bytes <= 16);
-#ifdef __AVX512F__
- return _mm_mask_loadu_epi8 (zero, (1 << n_bytes) - 1, p);
-#else
- return aesni_gcm_byte_mask (CLIB_MEM_OVERFLOW_LOAD (_mm_loadu_si128, p),
- n_bytes);
+ const u8x16 Ke[15];
+#ifdef __VAES__
+ const u8x64 Ke4[15];
#endif
-}
+} aes_gcm_key_data_t;
-static_always_inline void
-aesni_gcm_store_partial (void *p, __m128i r, int n_bytes)
+typedef struct
{
-#ifdef __AVX512F__
- _mm_mask_storeu_epi8 (p, (1 << n_bytes) - 1, r);
-#else
- u8x16 mask = u8x16_is_greater (u8x16_splat (n_bytes), byte_mask_scale);
- _mm_maskmoveu_si128 (r, (__m128i) mask, p);
-#endif
-}
-
-static_always_inline void
-aesni_gcm_load (__m128i * d, __m128i * inv, int n, int n_bytes)
+ u32 counter;
+ union
+ {
+ u32x4 Y;
+ u32x16 Y4;
+ };
+} aes_gcm_counter_t;
+
+typedef enum
{
- for (int i = 0; i < n - 1; i++)
- d[i] = _mm_loadu_si128 (inv + i);
- d[n - 1] = n_bytes ? aesni_gcm_load_partial (inv + n - 1, n_bytes) :
- _mm_loadu_si128 (inv + n - 1);
-}
+ AES_GCM_F_WITH_GHASH = (1 << 0),
+ AES_GCM_F_LAST_ROUND = (1 << 1),
+ AES_GCM_F_ENCRYPT = (1 << 2),
+ AES_GCM_F_DECRYPT = (1 << 3),
+} aes_gcm_flags_t;
-static_always_inline void
-aesni_gcm_store (__m128i * d, __m128i * outv, int n, int n_bytes)
-{
- for (int i = 0; i < n - 1; i++)
- _mm_storeu_si128 (outv + i, d[i]);
- if (n_bytes & 0xf)
- aesni_gcm_store_partial (outv + n - 1, d[n - 1], n_bytes);
- else
- _mm_storeu_si128 (outv + n - 1, d[n - 1]);
-}
+static const u32x4 ctr_inv_1 = { 0, 0, 0, 1 << 24 };
static_always_inline void
-aesni_gcm_enc_first_round (__m128i * r, __m128i * Y, u32 * ctr, __m128i k,
- int n_blocks)
+aes_gcm_enc_first_round (u8x16 * r, aes_gcm_counter_t * ctr, u8x16 k,
+ int n_blocks)
{
- u32 i;
-
- if (PREDICT_TRUE ((u8) ctr[0] < (256 - n_blocks)))
+ if (PREDICT_TRUE ((u8) ctr->counter < (256 - 2 * n_blocks)))
{
- for (i = 0; i < n_blocks; i++)
+ for (int i = 0; i < n_blocks; i++)
{
- Y[0] = _mm_add_epi32 (Y[0], last_byte_one);
- r[i] = k ^ Y[0];
+ r[i] = k ^ (u8x16) ctr->Y;
+ ctr->Y += ctr_inv_1;
}
- ctr[0] += n_blocks;
+ ctr->counter += n_blocks;
}
else
{
- for (i = 0; i < n_blocks; i++)
+ for (int i = 0; i < n_blocks; i++)
{
- Y[0] = _mm_insert_epi32 (Y[0], clib_host_to_net_u32 (++ctr[0]), 3);
- r[i] = k ^ Y[0];
+ r[i] = k ^ (u8x16) ctr->Y;
+ ctr->counter++;
+ ctr->Y[3] = clib_host_to_net_u32 (ctr->counter + 1);
}
}
}
static_always_inline void
-aesni_gcm_enc_round (__m128i * r, __m128i k, int n_blocks)
+aes_gcm_enc_round (u8x16 * r, u8x16 k, int n_blocks)
{
for (int i = 0; i < n_blocks; i++)
- r[i] = _mm_aesenc_si128 (r[i], k);
+ r[i] = aes_enc_round (r[i], k);
}
static_always_inline void
-aesni_gcm_enc_last_round (__m128i * r, __m128i * d, const __m128i * k,
- int rounds, int n_blocks)
+aes_gcm_enc_last_round (u8x16 * r, u8x16 * d, u8x16 const *k,
+ int rounds, int n_blocks)
{
/* additional ronuds for AES-192 and AES-256 */
for (int i = 10; i < rounds; i++)
- aesni_gcm_enc_round (r, k[i], n_blocks);
+ aes_gcm_enc_round (r, k[i], n_blocks);
for (int i = 0; i < n_blocks; i++)
- d[i] ^= _mm_aesenclast_si128 (r[i], k[rounds]);
+ d[i] ^= aes_enc_last_round (r[i], k[rounds]);
}
-static_always_inline __m128i
-aesni_gcm_ghash_blocks (__m128i T, aes_gcm_key_data_t * kd,
- const __m128i * in, int n_blocks)
+static_always_inline u8x16
+aes_gcm_ghash_blocks (u8x16 T, aes_gcm_key_data_t * kd,
+ u8x16u * in, int n_blocks)
{
ghash_data_t _gd, *gd = &_gd;
- const __m128i *Hi = kd->Hi + n_blocks - 1;
- ghash_mul_first (gd, aesni_gcm_bswap (_mm_loadu_si128 (in)) ^ T, Hi[0]);
+ u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - n_blocks;
+ ghash_mul_first (gd, u8x16_reflect (in[0]) ^ T, Hi[0]);
for (int i = 1; i < n_blocks; i++)
- ghash_mul_next (gd, aesni_gcm_bswap (_mm_loadu_si128 (in + i)), Hi[-i]);
+ ghash_mul_next (gd, u8x16_reflect ((in[i])), Hi[i]);
ghash_reduce (gd);
ghash_reduce2 (gd);
return ghash_final (gd);
}
-static_always_inline __m128i
-aesni_gcm_ghash (__m128i T, aes_gcm_key_data_t * kd, const __m128i * in,
- u32 n_left)
+static_always_inline u8x16
+aes_gcm_ghash (u8x16 T, aes_gcm_key_data_t * kd, u8x16u * in, u32 n_left)
{
while (n_left >= 128)
{
- T = aesni_gcm_ghash_blocks (T, kd, in, 8);
+ T = aes_gcm_ghash_blocks (T, kd, in, 8);
n_left -= 128;
in += 8;
}
if (n_left >= 64)
{
- T = aesni_gcm_ghash_blocks (T, kd, in, 4);
+ T = aes_gcm_ghash_blocks (T, kd, in, 4);
n_left -= 64;
in += 4;
}
if (n_left >= 32)
{
- T = aesni_gcm_ghash_blocks (T, kd, in, 2);
+ T = aes_gcm_ghash_blocks (T, kd, in, 2);
n_left -= 32;
in += 2;
}
if (n_left >= 16)
{
- T = aesni_gcm_ghash_blocks (T, kd, in, 1);
+ T = aes_gcm_ghash_blocks (T, kd, in, 1);
n_left -= 16;
in += 1;
}
if (n_left)
{
- __m128i r = aesni_gcm_load_partial ((__m128i *) in, n_left);
- T = ghash_mul (aesni_gcm_bswap (r) ^ T, kd->Hi[0]);
+ u8x16 r = aes_load_partial (in, n_left);
+ T = ghash_mul (u8x16_reflect (r) ^ T, kd->Hi[NUM_HI - 1]);
}
return T;
}
-static_always_inline __m128i
-aesni_gcm_calc (__m128i T, aes_gcm_key_data_t * kd, __m128i * d,
- __m128i * Y, u32 * ctr, __m128i * inv, __m128i * outv,
- int rounds, int n, int last_block_bytes, int with_ghash,
- int is_encrypt)
+static_always_inline u8x16
+aes_gcm_calc (u8x16 T, aes_gcm_key_data_t * kd, u8x16 * d,
+ aes_gcm_counter_t * ctr, u8x16u * inv, u8x16u * outv,
+ int rounds, int n, int last_block_bytes, aes_gcm_flags_t f)
{
- __m128i r[n];
+ u8x16 r[n];
ghash_data_t _gd = { }, *gd = &_gd;
- const __m128i *k = kd->Ke;
- int hidx = is_encrypt ? 4 : n, didx = 0;
+ const u8x16 *rk = (u8x16 *) kd->Ke;
+ int ghash_blocks = (f & AES_GCM_F_ENCRYPT) ? 4 : n, gc = 1;
+ u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - ghash_blocks;
- _mm_prefetch (inv + 4, _MM_HINT_T0);
+ clib_prefetch_load (inv + 4);
/* AES rounds 0 and 1 */
- aesni_gcm_enc_first_round (r, Y, ctr, k[0], n);
- aesni_gcm_enc_round (r, k[1], n);
+ aes_gcm_enc_first_round (r, ctr, rk[0], n);
+ aes_gcm_enc_round (r, rk[1], n);
/* load data - decrypt round */
- if (is_encrypt == 0)
- aesni_gcm_load (d, inv, n, last_block_bytes);
+ if (f & AES_GCM_F_DECRYPT)
+ {
+ for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ d[i] = inv[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ d[n - 1] = aes_load_partial (inv + n - 1, last_block_bytes);
+ }
/* GHASH multiply block 1 */
- if (with_ghash)
- ghash_mul_first (gd, aesni_gcm_bswap (d[didx++]) ^ T, kd->Hi[--hidx]);
+ if (f & AES_GCM_F_WITH_GHASH)
+ ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]);
/* AES rounds 2 and 3 */
- aesni_gcm_enc_round (r, k[2], n);
- aesni_gcm_enc_round (r, k[3], n);
+ aes_gcm_enc_round (r, rk[2], n);
+ aes_gcm_enc_round (r, rk[3], n);
/* GHASH multiply block 2 */
- if (with_ghash && hidx)
- ghash_mul_next (gd, aesni_gcm_bswap (d[didx++]), kd->Hi[--hidx]);
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]);
/* AES rounds 4 and 5 */
- aesni_gcm_enc_round (r, k[4], n);
- aesni_gcm_enc_round (r, k[5], n);
+ aes_gcm_enc_round (r, rk[4], n);
+ aes_gcm_enc_round (r, rk[5], n);
/* GHASH multiply block 3 */
- if (with_ghash && hidx)
- ghash_mul_next (gd, aesni_gcm_bswap (d[didx++]), kd->Hi[--hidx]);
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]);
/* AES rounds 6 and 7 */
- aesni_gcm_enc_round (r, k[6], n);
- aesni_gcm_enc_round (r, k[7], n);
+ aes_gcm_enc_round (r, rk[6], n);
+ aes_gcm_enc_round (r, rk[7], n);
/* GHASH multiply block 4 */
- if (with_ghash && hidx)
- ghash_mul_next (gd, aesni_gcm_bswap (d[didx++]), kd->Hi[--hidx]);
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]);
/* AES rounds 8 and 9 */
- aesni_gcm_enc_round (r, k[8], n);
- aesni_gcm_enc_round (r, k[9], n);
+ aes_gcm_enc_round (r, rk[8], n);
+ aes_gcm_enc_round (r, rk[9], n);
/* GHASH reduce 1st step */
- if (with_ghash)
+ if (f & AES_GCM_F_WITH_GHASH)
ghash_reduce (gd);
/* load data - encrypt round */
- if (is_encrypt)
- aesni_gcm_load (d, inv, n, last_block_bytes);
+ if (f & AES_GCM_F_ENCRYPT)
+ {
+ for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ d[i] = inv[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ d[n - 1] = aes_load_partial (inv + n - 1, last_block_bytes);
+ }
/* GHASH reduce 2nd step */
- if (with_ghash)
+ if (f & AES_GCM_F_WITH_GHASH)
ghash_reduce2 (gd);
/* AES last round(s) */
- aesni_gcm_enc_last_round (r, d, k, rounds, n);
+ aes_gcm_enc_last_round (r, d, rk, rounds, n);
/* store data */
- aesni_gcm_store (d, outv, n, last_block_bytes);
+ for (int i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ outv[i] = d[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ aes_store_partial (outv + n - 1, d[n - 1], last_block_bytes);
/* GHASH final step */
- if (with_ghash)
+ if (f & AES_GCM_F_WITH_GHASH)
T = ghash_final (gd);
return T;
}
-static_always_inline __m128i
-aesni_gcm_calc_double (__m128i T, aes_gcm_key_data_t * kd, __m128i * d,
- __m128i * Y, u32 * ctr, __m128i * inv, __m128i * outv,
- int rounds, int is_encrypt)
+static_always_inline u8x16
+aes_gcm_calc_double (u8x16 T, aes_gcm_key_data_t * kd, u8x16 * d,
+ aes_gcm_counter_t * ctr, u8x16u * inv, u8x16u * outv,
+ int rounds, aes_gcm_flags_t f)
{
- __m128i r[4];
+ u8x16 r[4];
ghash_data_t _gd, *gd = &_gd;
- const __m128i *k = kd->Ke;
+ const u8x16 *rk = (u8x16 *) kd->Ke;
+ u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - 8;
/* AES rounds 0 and 1 */
- aesni_gcm_enc_first_round (r, Y, ctr, k[0], 4);
- aesni_gcm_enc_round (r, k[1], 4);
+ aes_gcm_enc_first_round (r, ctr, rk[0], 4);
+ aes_gcm_enc_round (r, rk[1], 4);
/* load 4 blocks of data - decrypt round */
- if (is_encrypt == 0)
- aesni_gcm_load (d, inv, 4, 0);
+ if (f & AES_GCM_F_DECRYPT)
+ {
+ d[0] = inv[0];
+ d[1] = inv[1];
+ d[2] = inv[2];
+ d[3] = inv[3];
+ }
/* GHASH multiply block 0 */
- ghash_mul_first (gd, aesni_gcm_bswap (d[0]) ^ T, kd->Hi[7]);
+ ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]);
/* AES rounds 2 and 3 */
- aesni_gcm_enc_round (r, k[2], 4);
- aesni_gcm_enc_round (r, k[3], 4);
+ aes_gcm_enc_round (r, rk[2], 4);
+ aes_gcm_enc_round (r, rk[3], 4);
/* GHASH multiply block 1 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[1]), kd->Hi[6]);
+ ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]);
/* AES rounds 4 and 5 */
- aesni_gcm_enc_round (r, k[4], 4);
- aesni_gcm_enc_round (r, k[5], 4);
+ aes_gcm_enc_round (r, rk[4], 4);
+ aes_gcm_enc_round (r, rk[5], 4);
/* GHASH multiply block 2 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[2]), kd->Hi[5]);
+ ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]);
/* AES rounds 6 and 7 */
- aesni_gcm_enc_round (r, k[6], 4);
- aesni_gcm_enc_round (r, k[7], 4);
+ aes_gcm_enc_round (r, rk[6], 4);
+ aes_gcm_enc_round (r, rk[7], 4);
/* GHASH multiply block 3 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[3]), kd->Hi[4]);
+ ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]);
/* AES rounds 8 and 9 */
- aesni_gcm_enc_round (r, k[8], 4);
- aesni_gcm_enc_round (r, k[9], 4);
+ aes_gcm_enc_round (r, rk[8], 4);
+ aes_gcm_enc_round (r, rk[9], 4);
/* load 4 blocks of data - encrypt round */
- if (is_encrypt)
- aesni_gcm_load (d, inv, 4, 0);
+ if (f & AES_GCM_F_ENCRYPT)
+ {
+ d[0] = inv[0];
+ d[1] = inv[1];
+ d[2] = inv[2];
+ d[3] = inv[3];
+ }
/* AES last round(s) */
- aesni_gcm_enc_last_round (r, d, k, rounds, 4);
+ aes_gcm_enc_last_round (r, d, rk, rounds, 4);
/* store 4 blocks of data */
- aesni_gcm_store (d, outv, 4, 0);
+ outv[0] = d[0];
+ outv[1] = d[1];
+ outv[2] = d[2];
+ outv[3] = d[3];
/* load next 4 blocks of data data - decrypt round */
- if (is_encrypt == 0)
- aesni_gcm_load (d, inv + 4, 4, 0);
+ if (f & AES_GCM_F_DECRYPT)
+ {
+ d[0] = inv[4];
+ d[1] = inv[5];
+ d[2] = inv[6];
+ d[3] = inv[7];
+ }
/* GHASH multiply block 4 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[0]), kd->Hi[3]);
+ ghash_mul_next (gd, u8x16_reflect (d[0]), Hi[4]);
/* AES rounds 0, 1 and 2 */
- aesni_gcm_enc_first_round (r, Y, ctr, k[0], 4);
- aesni_gcm_enc_round (r, k[1], 4);
- aesni_gcm_enc_round (r, k[2], 4);
+ aes_gcm_enc_first_round (r, ctr, rk[0], 4);
+ aes_gcm_enc_round (r, rk[1], 4);
+ aes_gcm_enc_round (r, rk[2], 4);
/* GHASH multiply block 5 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[1]), kd->Hi[2]);
+ ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[5]);
/* AES rounds 3 and 4 */
- aesni_gcm_enc_round (r, k[3], 4);
- aesni_gcm_enc_round (r, k[4], 4);
+ aes_gcm_enc_round (r, rk[3], 4);
+ aes_gcm_enc_round (r, rk[4], 4);
/* GHASH multiply block 6 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[2]), kd->Hi[1]);
+ ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[6]);
/* AES rounds 5 and 6 */
- aesni_gcm_enc_round (r, k[5], 4);
- aesni_gcm_enc_round (r, k[6], 4);
+ aes_gcm_enc_round (r, rk[5], 4);
+ aes_gcm_enc_round (r, rk[6], 4);
/* GHASH multiply block 7 */
- ghash_mul_next (gd, aesni_gcm_bswap (d[3]), kd->Hi[0]);
+ ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[7]);
/* AES rounds 7 and 8 */
- aesni_gcm_enc_round (r, k[7], 4);
- aesni_gcm_enc_round (r, k[8], 4);
+ aes_gcm_enc_round (r, rk[7], 4);
+ aes_gcm_enc_round (r, rk[8], 4);
/* GHASH reduce 1st step */
ghash_reduce (gd);
/* AES round 9 */
- aesni_gcm_enc_round (r, k[9], 4);
+ aes_gcm_enc_round (r, rk[9], 4);
/* load data - encrypt round */
- if (is_encrypt)
- aesni_gcm_load (d, inv + 4, 4, 0);
+ if (f & AES_GCM_F_ENCRYPT)
+ {
+ d[0] = inv[4];
+ d[1] = inv[5];
+ d[2] = inv[6];
+ d[3] = inv[7];
+ }
/* GHASH reduce 2nd step */
ghash_reduce2 (gd);
/* AES last round(s) */
- aesni_gcm_enc_last_round (r, d, k, rounds, 4);
+ aes_gcm_enc_last_round (r, d, rk, rounds, 4);
/* store data */
- aesni_gcm_store (d, outv + 4, 4, 0);
+ outv[4] = d[0];
+ outv[5] = d[1];
+ outv[6] = d[2];
+ outv[7] = d[3];
/* GHASH final step */
return ghash_final (gd);
}
-static_always_inline __m128i
-aesni_gcm_ghash_last (__m128i T, aes_gcm_key_data_t * kd, __m128i * d,
- int n_blocks, int n_bytes)
+static_always_inline u8x16
+aes_gcm_ghash_last (u8x16 T, aes_gcm_key_data_t * kd, u8x16 * d,
+ int n_blocks, int n_bytes)
{
ghash_data_t _gd, *gd = &_gd;
+ u8x16 *Hi = (u8x16 *) kd->Hi + NUM_HI - n_blocks;
if (n_bytes)
- d[n_blocks - 1] = aesni_gcm_byte_mask (d[n_blocks - 1], n_bytes);
+ d[n_blocks - 1] = aes_byte_mask (d[n_blocks - 1], n_bytes);
- ghash_mul_first (gd, aesni_gcm_bswap (d[0]) ^ T, kd->Hi[n_blocks - 1]);
+ ghash_mul_first (gd, u8x16_reflect (d[0]) ^ T, Hi[0]);
if (n_blocks > 1)
- ghash_mul_next (gd, aesni_gcm_bswap (d[1]), kd->Hi[n_blocks - 2]);
+ ghash_mul_next (gd, u8x16_reflect (d[1]), Hi[1]);
if (n_blocks > 2)
- ghash_mul_next (gd, aesni_gcm_bswap (d[2]), kd->Hi[n_blocks - 3]);
+ ghash_mul_next (gd, u8x16_reflect (d[2]), Hi[2]);
if (n_blocks > 3)
- ghash_mul_next (gd, aesni_gcm_bswap (d[3]), kd->Hi[n_blocks - 4]);
+ ghash_mul_next (gd, u8x16_reflect (d[3]), Hi[3]);
ghash_reduce (gd);
ghash_reduce2 (gd);
return ghash_final (gd);
}
+#ifdef __VAES__
+static const u32x16 ctr_inv_1234 = {
+ 0, 0, 0, 1 << 24, 0, 0, 0, 2 << 24, 0, 0, 0, 3 << 24, 0, 0, 0, 4 << 24,
+};
+
+static const u32x16 ctr_inv_4444 = {
+ 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24, 0, 0, 0, 4 << 24
+};
+
+static const u32x16 ctr_1234 = {
+ 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0,
+};
+
+static_always_inline void
+aes4_gcm_enc_first_round (u8x64 * r, aes_gcm_counter_t * ctr, u8x64 k, int n)
+{
+ u8 last_byte = (u8) ctr->counter;
+ int i = 0;
+
+ /* As counter is stored in network byte order for performance reasons we
+ are incrementing least significant byte only except in case where we
+ overlow. As we are processing four 512-blocks in parallel except the
+ last round, overflow can happen only when n == 4 */
+
+ if (n == 4)
+ for (; i < 2; i++)
+ {
+ r[i] = k ^ (u8x64) ctr->Y4;
+ ctr->Y4 += ctr_inv_4444;
+ }
+
+ if (n == 4 && PREDICT_TRUE (last_byte == 241))
+ {
+ u32x16 Yc, Yr = (u32x16) u8x64_reflect_u8x16 ((u8x64) ctr->Y4);
+
+ for (; i < n; i++)
+ {
+ r[i] = k ^ (u8x64) ctr->Y4;
+ Yc = u32x16_splat (ctr->counter + 4 * (i + 1)) + ctr_1234;
+ Yr = (u32x16) u32x16_mask_blend (Yr, Yc, 0x1111);
+ ctr->Y4 = (u32x16) u8x64_reflect_u8x16 ((u8x64) Yr);
+ }
+ }
+ else
+ {
+ for (; i < n; i++)
+ {
+ r[i] = k ^ (u8x64) ctr->Y4;
+ ctr->Y4 += ctr_inv_4444;
+ }
+ }
+ ctr->counter += n * 4;
+}
+
+static_always_inline void
+aes4_gcm_enc_round (u8x64 * r, u8x64 k, int n_blocks)
+{
+ for (int i = 0; i < n_blocks; i++)
+ r[i] = aes_enc_round_x4 (r[i], k);
+}
+
+static_always_inline void
+aes4_gcm_enc_last_round (u8x64 * r, u8x64 * d, u8x64 const *k,
+ int rounds, int n_blocks)
+{
+
+ /* additional ronuds for AES-192 and AES-256 */
+ for (int i = 10; i < rounds; i++)
+ aes4_gcm_enc_round (r, k[i], n_blocks);
+
+ for (int i = 0; i < n_blocks; i++)
+ d[i] ^= aes_enc_last_round_x4 (r[i], k[rounds]);
+}
+
+static_always_inline u8x16
+aes4_gcm_calc (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d,
+ aes_gcm_counter_t * ctr, u8x16u * in, u8x16u * out,
+ int rounds, int n, int last_4block_bytes, aes_gcm_flags_t f)
+{
+ ghash4_data_t _gd, *gd = &_gd;
+ const u8x64 *rk = (u8x64 *) kd->Ke4;
+ int i, ghash_blocks, gc = 1;
+ u8x64u *Hi4, *inv = (u8x64u *) in, *outv = (u8x64u *) out;
+ u8x64 r[4];
+ u64 byte_mask = _bextr_u64 (-1LL, 0, last_4block_bytes);
+
+ if (f & AES_GCM_F_ENCRYPT)
+ {
+ /* during encryption we either hash four 512-bit blocks from previous
+ round or we don't hash at all */
+ ghash_blocks = 4;
+ Hi4 = (u8x64u *) (kd->Hi + NUM_HI - ghash_blocks * 4);
+ }
+ else
+ {
+ /* during deccryption we hash 1..4 512-bit blocks from current round */
+ ghash_blocks = n;
+ int n_128bit_blocks = n * 4;
+ /* if this is last round of decryption, we may have less than 4
+ 128-bit blocks in the last 512-bit data block, so we need to adjust
+ Hi4 pointer accordingly */
+ if (f & AES_GCM_F_LAST_ROUND)
+ n_128bit_blocks += ((last_4block_bytes + 15) >> 4) - 4;
+ Hi4 = (u8x64u *) (kd->Hi + NUM_HI - n_128bit_blocks);
+ }
+
+ /* AES rounds 0 and 1 */
+ aes4_gcm_enc_first_round (r, ctr, rk[0], n);
+ aes4_gcm_enc_round (r, rk[1], n);
+
+ /* load 4 blocks of data - decrypt round */
+ if (f & AES_GCM_F_DECRYPT)
+ {
+ for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ d[i] = inv[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ d[i] = u8x64_mask_load (u8x64_splat (0), inv + i, byte_mask);
+ }
+
+ /* GHASH multiply block 0 */
+ if (f & AES_GCM_F_WITH_GHASH)
+ ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^
+ u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]);
+
+ /* AES rounds 2 and 3 */
+ aes4_gcm_enc_round (r, rk[2], n);
+ aes4_gcm_enc_round (r, rk[3], n);
+
+ /* GHASH multiply block 1 */
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]);
+
+ /* AES rounds 4 and 5 */
+ aes4_gcm_enc_round (r, rk[4], n);
+ aes4_gcm_enc_round (r, rk[5], n);
+
+ /* GHASH multiply block 2 */
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]);
+
+ /* AES rounds 6 and 7 */
+ aes4_gcm_enc_round (r, rk[6], n);
+ aes4_gcm_enc_round (r, rk[7], n);
+
+ /* GHASH multiply block 3 */
+ if ((f & AES_GCM_F_WITH_GHASH) && gc++ < ghash_blocks)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]);
+
+ /* load 4 blocks of data - decrypt round */
+ if (f & AES_GCM_F_ENCRYPT)
+ {
+ for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ d[i] = inv[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ d[i] = u8x64_mask_load (u8x64_splat (0), inv + i, byte_mask);
+ }
+
+ /* AES rounds 8 and 9 */
+ aes4_gcm_enc_round (r, rk[8], n);
+ aes4_gcm_enc_round (r, rk[9], n);
+
+ /* AES last round(s) */
+ aes4_gcm_enc_last_round (r, d, rk, rounds, n);
+
+ /* store 4 blocks of data */
+ for (i = 0; i < n - ((f & AES_GCM_F_LAST_ROUND) != 0); i++)
+ outv[i] = d[i];
+
+ if (f & AES_GCM_F_LAST_ROUND)
+ u8x64_mask_store (d[i], outv + i, byte_mask);
+
+ /* GHASH reduce 1st step */
+ ghash4_reduce (gd);
+
+ /* GHASH reduce 2nd step */
+ ghash4_reduce2 (gd);
+
+ /* GHASH final step */
+ return ghash4_final (gd);
+}
+
+static_always_inline u8x16
+aes4_gcm_calc_double (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d,
+ aes_gcm_counter_t * ctr, u8x16u * in, u8x16u * out,
+ int rounds, aes_gcm_flags_t f)
+{
+ u8x64 r[4];
+ ghash4_data_t _gd, *gd = &_gd;
+ const u8x64 *rk = (u8x64 *) kd->Ke4;
+ u8x64 *Hi4 = (u8x64 *) (kd->Hi + NUM_HI - 32);
+ u8x64u *inv = (u8x64u *) in, *outv = (u8x64u *) out;
+
+ /* AES rounds 0 and 1 */
+ aes4_gcm_enc_first_round (r, ctr, rk[0], 4);
+ aes4_gcm_enc_round (r, rk[1], 4);
+
+ /* load 4 blocks of data - decrypt round */
+ if (f & AES_GCM_F_DECRYPT)
+ for (int i = 0; i < 4; i++)
+ d[i] = inv[i];
+
+ /* GHASH multiply block 0 */
+ ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^
+ u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]);
+
+ /* AES rounds 2 and 3 */
+ aes4_gcm_enc_round (r, rk[2], 4);
+ aes4_gcm_enc_round (r, rk[3], 4);
+
+ /* GHASH multiply block 1 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]);
+
+ /* AES rounds 4 and 5 */
+ aes4_gcm_enc_round (r, rk[4], 4);
+ aes4_gcm_enc_round (r, rk[5], 4);
+
+ /* GHASH multiply block 2 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]);
+
+ /* AES rounds 6 and 7 */
+ aes4_gcm_enc_round (r, rk[6], 4);
+ aes4_gcm_enc_round (r, rk[7], 4);
+
+ /* GHASH multiply block 3 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]);
+
+ /* AES rounds 8 and 9 */
+ aes4_gcm_enc_round (r, rk[8], 4);
+ aes4_gcm_enc_round (r, rk[9], 4);
+
+ /* load 4 blocks of data - encrypt round */
+ if (f & AES_GCM_F_ENCRYPT)
+ for (int i = 0; i < 4; i++)
+ d[i] = inv[i];
+
+ /* AES last round(s) */
+ aes4_gcm_enc_last_round (r, d, rk, rounds, 4);
+
+ /* store 4 blocks of data */
+ for (int i = 0; i < 4; i++)
+ outv[i] = d[i];
+
+ /* load 4 blocks of data - decrypt round */
+ if (f & AES_GCM_F_DECRYPT)
+ for (int i = 0; i < 4; i++)
+ d[i] = inv[i + 4];
+
+ /* GHASH multiply block 3 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[0]), Hi4[4]);
+
+ /* AES rounds 0 and 1 */
+ aes4_gcm_enc_first_round (r, ctr, rk[0], 4);
+ aes4_gcm_enc_round (r, rk[1], 4);
+
+ /* GHASH multiply block 5 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[5]);
+
+ /* AES rounds 2 and 3 */
+ aes4_gcm_enc_round (r, rk[2], 4);
+ aes4_gcm_enc_round (r, rk[3], 4);
+
+ /* GHASH multiply block 6 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[6]);
+
+ /* AES rounds 4 and 5 */
+ aes4_gcm_enc_round (r, rk[4], 4);
+ aes4_gcm_enc_round (r, rk[5], 4);
+
+ /* GHASH multiply block 7 */
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[7]);
+
+ /* AES rounds 6 and 7 */
+ aes4_gcm_enc_round (r, rk[6], 4);
+ aes4_gcm_enc_round (r, rk[7], 4);
+
+ /* GHASH reduce 1st step */
+ ghash4_reduce (gd);
+
+ /* AES rounds 8 and 9 */
+ aes4_gcm_enc_round (r, rk[8], 4);
+ aes4_gcm_enc_round (r, rk[9], 4);
+
+ /* GHASH reduce 2nd step */
+ ghash4_reduce2 (gd);
+
+ /* load 4 blocks of data - encrypt round */
+ if (f & AES_GCM_F_ENCRYPT)
+ for (int i = 0; i < 4; i++)
+ d[i] = inv[i + 4];
+
+ /* AES last round(s) */
+ aes4_gcm_enc_last_round (r, d, rk, rounds, 4);
+
+ /* store 4 blocks of data */
+ for (int i = 0; i < 4; i++)
+ outv[i + 4] = d[i];
+
+ /* GHASH final step */
+ return ghash4_final (gd);
+}
+
+static_always_inline u8x16
+aes4_gcm_ghash_last (u8x16 T, aes_gcm_key_data_t * kd, u8x64 * d,
+ int n, int last_4block_bytes)
+{
+ ghash4_data_t _gd, *gd = &_gd;
+ u8x64u *Hi4;
+ int n_128bit_blocks;
+ u64 byte_mask = _bextr_u64 (-1LL, 0, last_4block_bytes);
+ n_128bit_blocks = (n - 1) * 4 + ((last_4block_bytes + 15) >> 4);
+ Hi4 = (u8x64u *) (kd->Hi + NUM_HI - n_128bit_blocks);
+
+ d[n - 1] = u8x64_mask_blend (u8x64_splat (0), d[n - 1], byte_mask);
+ ghash4_mul_first (gd, u8x64_reflect_u8x16 (d[0]) ^
+ u8x64_insert_u8x16 (u8x64_splat (0), T, 0), Hi4[0]);
+ if (n > 1)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[1]), Hi4[1]);
+ if (n > 2)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[2]), Hi4[2]);
+ if (n > 3)
+ ghash4_mul_next (gd, u8x64_reflect_u8x16 (d[3]), Hi4[3]);
+ ghash4_reduce (gd);
+ ghash4_reduce2 (gd);
+ return ghash4_final (gd);
+}
+#endif
-static_always_inline __m128i
-aesni_gcm_enc (__m128i T, aes_gcm_key_data_t * kd, __m128i Y, const u8 * in,
- const u8 * out, u32 n_left, int rounds)
+static_always_inline u8x16
+aes_gcm_enc (u8x16 T, aes_gcm_key_data_t * kd, aes_gcm_counter_t * ctr,
+ u8x16u * inv, u8x16u * outv, u32 n_left, int rounds)
{
- __m128i *inv = (__m128i *) in, *outv = (__m128i *) out;
- __m128i d[4];
- u32 ctr = 1;
+ u8x16 d[4];
+ aes_gcm_flags_t f = AES_GCM_F_ENCRYPT;
if (n_left == 0)
return T;
+#if __VAES__
+ u8x64 d4[4];
+ if (n_left < 256)
+ {
+ f |= AES_GCM_F_LAST_ROUND;
+ if (n_left > 192)
+ {
+ n_left -= 192;
+ aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 4, n_left);
+ }
+ else if (n_left > 128)
+ {
+ n_left -= 128;
+ aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 3, n_left);
+ }
+ else if (n_left > 64)
+ {
+ n_left -= 64;
+ aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 2, n_left);
+ }
+ else
+ {
+ aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 1, n_left);
+ }
+ }
+
+ aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f);
+
+ /* next */
+ n_left -= 256;
+ outv += 16;
+ inv += 16;
+
+ f |= AES_GCM_F_WITH_GHASH;
+
+ while (n_left >= 512)
+ {
+ T = aes4_gcm_calc_double (T, kd, d4, ctr, inv, outv, rounds, f);
+
+ /* next */
+ n_left -= 512;
+ outv += 32;
+ inv += 32;
+ }
+
+ while (n_left >= 256)
+ {
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f);
+
+ /* next */
+ n_left -= 256;
+ outv += 16;
+ inv += 16;
+ }
+
+ if (n_left == 0)
+ return aes4_gcm_ghash_last (T, kd, d4, 4, 64);
+
+ f |= AES_GCM_F_LAST_ROUND;
+
+ if (n_left > 192)
+ {
+ n_left -= 192;
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 4, n_left);
+ }
+
+ if (n_left > 128)
+ {
+ n_left -= 128;
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 3, n_left);
+ }
+
+ if (n_left > 64)
+ {
+ n_left -= 64;
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 2, n_left);
+ }
+
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f);
+ return aes4_gcm_ghash_last (T, kd, d4, 1, n_left);
+#endif
+
if (n_left < 64)
{
+ f |= AES_GCM_F_LAST_ROUND;
if (n_left > 48)
{
- n_left &= 0x0f;
- aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4, n_left,
- /* with_ghash */ 0, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 4, n_left);
+ n_left -= 48;
+ aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 4, n_left);
}
else if (n_left > 32)
{
- n_left &= 0x0f;
- aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 3, n_left,
- /* with_ghash */ 0, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 3, n_left);
+ n_left -= 32;
+ aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 3, n_left);
}
else if (n_left > 16)
{
- n_left &= 0x0f;
- aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 2, n_left,
- /* with_ghash */ 0, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 2, n_left);
+ n_left -= 16;
+ aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 2, n_left);
}
else
{
- n_left &= 0x0f;
- aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 1, n_left,
- /* with_ghash */ 0, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 1, n_left);
+ aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 1, n_left);
}
}
- aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4, 0,
- /* with_ghash */ 0, /* is_encrypt */ 1);
+ aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f);
/* next */
n_left -= 64;
outv += 4;
inv += 4;
+ f |= AES_GCM_F_WITH_GHASH;
+
while (n_left >= 128)
{
- T = aesni_gcm_calc_double (T, kd, d, &Y, &ctr, inv, outv, rounds,
- /* is_encrypt */ 1);
+ T = aes_gcm_calc_double (T, kd, d, ctr, inv, outv, rounds, f);
/* next */
n_left -= 128;
if (n_left >= 64)
{
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4, 0,
- /* with_ghash */ 1, /* is_encrypt */ 1);
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f);
/* next */
n_left -= 64;
}
if (n_left == 0)
- return aesni_gcm_ghash_last (T, kd, d, 4, 0);
+ return aes_gcm_ghash_last (T, kd, d, 4, 0);
+
+ f |= AES_GCM_F_LAST_ROUND;
if (n_left > 48)
{
- n_left &= 0x0f;
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4, n_left,
- /* with_ghash */ 1, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 4, n_left);
+ n_left -= 48;
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 4, n_left);
}
if (n_left > 32)
{
- n_left &= 0x0f;
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 3, n_left,
- /* with_ghash */ 1, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 3, n_left);
+ n_left -= 32;
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 3, n_left);
}
if (n_left > 16)
{
- n_left &= 0x0f;
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 2, n_left,
- /* with_ghash */ 1, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 2, n_left);
+ n_left -= 16;
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 2, n_left);
}
- n_left &= 0x0f;
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 1, n_left,
- /* with_ghash */ 1, /* is_encrypt */ 1);
- return aesni_gcm_ghash_last (T, kd, d, 1, n_left);
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f);
+ return aes_gcm_ghash_last (T, kd, d, 1, n_left);
}
-static_always_inline __m128i
-aesni_gcm_dec (__m128i T, aes_gcm_key_data_t * kd, __m128i Y, const u8 * in,
- const u8 * out, u32 n_left, int rounds)
+static_always_inline u8x16
+aes_gcm_dec (u8x16 T, aes_gcm_key_data_t * kd, aes_gcm_counter_t * ctr,
+ u8x16u * inv, u8x16u * outv, u32 n_left, int rounds)
{
- __m128i *inv = (__m128i *) in, *outv = (__m128i *) out;
- __m128i d[8];
- u32 ctr = 1;
+ aes_gcm_flags_t f = AES_GCM_F_WITH_GHASH | AES_GCM_F_DECRYPT;
+#ifdef __VAES__
+ u8x64 d4[4] = { };
+
+ while (n_left >= 512)
+ {
+ T = aes4_gcm_calc_double (T, kd, d4, ctr, inv, outv, rounds, f);
+
+ /* next */
+ n_left -= 512;
+ outv += 32;
+ inv += 32;
+ }
+
+ while (n_left >= 256)
+ {
+ T = aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4, 0, f);
+ /* next */
+ n_left -= 256;
+ outv += 16;
+ inv += 16;
+ }
+
+ if (n_left == 0)
+ return T;
+
+ f |= AES_GCM_F_LAST_ROUND;
+
+ if (n_left > 192)
+ return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 4,
+ n_left - 192, f);
+ if (n_left > 128)
+ return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 3,
+ n_left - 128, f);
+ if (n_left > 64)
+ return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 2,
+ n_left - 64, f);
+ return aes4_gcm_calc (T, kd, d4, ctr, inv, outv, rounds, 1, n_left, f);
+#else
+ u8x16 d[4];
while (n_left >= 128)
{
- T = aesni_gcm_calc_double (T, kd, d, &Y, &ctr, inv, outv, rounds,
- /* is_encrypt */ 0);
+ T = aes_gcm_calc_double (T, kd, d, ctr, inv, outv, rounds, f);
/* next */
n_left -= 128;
if (n_left >= 64)
{
- T = aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4, 0, 1, 0);
+ T = aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, 0, f);
/* next */
n_left -= 64;
if (n_left == 0)
return T;
+ f |= AES_GCM_F_LAST_ROUND;
+
if (n_left > 48)
- return aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 4,
- n_left - 48,
- /* with_ghash */ 1, /* is_encrypt */ 0);
+ return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 4, n_left - 48, f);
if (n_left > 32)
- return aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 3,
- n_left - 32,
- /* with_ghash */ 1, /* is_encrypt */ 0);
+ return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 3, n_left - 32, f);
if (n_left > 16)
- return aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 2,
- n_left - 16,
- /* with_ghash */ 1, /* is_encrypt */ 0);
+ return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 2, n_left - 16, f);
- return aesni_gcm_calc (T, kd, d, &Y, &ctr, inv, outv, rounds, 1, n_left,
- /* with_ghash */ 1, /* is_encrypt */ 0);
+ return aes_gcm_calc (T, kd, d, ctr, inv, outv, rounds, 1, n_left, f);
+#endif
}
static_always_inline int
-aes_gcm (const u8 * in, u8 * out, const u8 * addt, const u8 * iv, u8 * tag,
+aes_gcm (u8x16u * in, u8x16u * out, u8x16u * addt, u8x16u * iv, u8x16u * tag,
u32 data_bytes, u32 aad_bytes, u8 tag_len, aes_gcm_key_data_t * kd,
int aes_rounds, int is_encrypt)
{
int i;
- __m128i r, Y0, T = { };
+ u8x16 r, T = { };
+ u32x4 Y0;
ghash_data_t _gd, *gd = &_gd;
+ aes_gcm_counter_t _ctr, *ctr = &_ctr;
- _mm_prefetch (iv, _MM_HINT_T0);
- _mm_prefetch (in, _MM_HINT_T0);
- _mm_prefetch (in + CLIB_CACHE_LINE_BYTES, _MM_HINT_T0);
+ clib_prefetch_load (iv);
+ clib_prefetch_load (in);
+ clib_prefetch_load (in + 4);
/* calculate ghash for AAD - optimized for ipsec common cases */
if (aad_bytes == 8)
- T = aesni_gcm_ghash (T, kd, (__m128i *) addt, 8);
+ T = aes_gcm_ghash (T, kd, addt, 8);
else if (aad_bytes == 12)
- T = aesni_gcm_ghash (T, kd, (__m128i *) addt, 12);
+ T = aes_gcm_ghash (T, kd, addt, 12);
else
- T = aesni_gcm_ghash (T, kd, (__m128i *) addt, aad_bytes);
+ T = aes_gcm_ghash (T, kd, addt, aad_bytes);
/* initalize counter */
- Y0 = CLIB_MEM_OVERFLOW_LOAD (_mm_loadu_si128, (__m128i *) iv);
- Y0 = _mm_insert_epi32 (Y0, clib_host_to_net_u32 (1), 3);
+ ctr->counter = 1;
+ Y0 = (u32x4) aes_load_partial (iv, 12) + ctr_inv_1;
+#ifdef __VAES__
+ ctr->Y4 = u32x16_splat_u32x4 (Y0) + ctr_inv_1234;
+#else
+ ctr->Y = Y0 + ctr_inv_1;
+#endif
/* ghash and encrypt/edcrypt */
if (is_encrypt)
- T = aesni_gcm_enc (T, kd, Y0, in, out, data_bytes, aes_rounds);
+ T = aes_gcm_enc (T, kd, ctr, in, out, data_bytes, aes_rounds);
else
- T = aesni_gcm_dec (T, kd, Y0, in, out, data_bytes, aes_rounds);
+ T = aes_gcm_dec (T, kd, ctr, in, out, data_bytes, aes_rounds);
- _mm_prefetch (tag, _MM_HINT_T0);
+ clib_prefetch_load (tag);
- /* Finalize ghash */
- r[0] = data_bytes;
- r[1] = aad_bytes;
-
- /* bytes to bits */
- r <<= 3;
+ /* Finalize ghash - data bytes and aad bytes converted to bits */
+ /* *INDENT-OFF* */
+ r = (u8x16) ((u64x2) {data_bytes, aad_bytes} << 3);
+ /* *INDENT-ON* */
/* interleaved computation of final ghash and E(Y0, k) */
- ghash_mul_first (gd, r ^ T, kd->Hi[0]);
- r = kd->Ke[0] ^ Y0;
+ ghash_mul_first (gd, r ^ T, kd->Hi[NUM_HI - 1]);
+ r = kd->Ke[0] ^ (u8x16) Y0;
for (i = 1; i < 5; i += 1)
- r = _mm_aesenc_si128 (r, kd->Ke[i]);
+ r = aes_enc_round (r, kd->Ke[i]);
ghash_reduce (gd);
ghash_reduce2 (gd);
for (; i < 9; i += 1)
- r = _mm_aesenc_si128 (r, kd->Ke[i]);
+ r = aes_enc_round (r, kd->Ke[i]);
T = ghash_final (gd);
for (; i < aes_rounds; i += 1)
- r = _mm_aesenc_si128 (r, kd->Ke[i]);
- r = _mm_aesenclast_si128 (r, kd->Ke[aes_rounds]);
- T = aesni_gcm_bswap (T) ^ r;
+ r = aes_enc_round (r, kd->Ke[i]);
+ r = aes_enc_last_round (r, kd->Ke[aes_rounds]);
+ T = u8x16_reflect (T) ^ r;
/* tag_len 16 -> 0 */
tag_len &= 0xf;
{
/* store tag */
if (tag_len)
- aesni_gcm_store_partial ((__m128i *) tag, T, (1 << tag_len) - 1);
+ aes_store_partial (tag, T, tag_len);
else
- _mm_storeu_si128 ((__m128i *) tag, T);
+ tag[0] = T;
}
else
{
/* check tag */
u16 tag_mask = tag_len ? (1 << tag_len) - 1 : 0xffff;
- r = _mm_loadu_si128 ((__m128i *) tag);
- if (_mm_movemask_epi8 (r == T) != tag_mask)
+ if ((u8x16_msb_mask (tag[0] == T) & tag_mask) != tag_mask)
return 0;
}
return 1;
}
static_always_inline u32
-aesni_ops_enc_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[],
- u32 n_ops, aes_key_size_t ks)
+aes_ops_enc_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[],
+ u32 n_ops, aes_key_size_t ks)
{
crypto_native_main_t *cm = &crypto_native_main;
vnet_crypto_op_t *op = ops[0];
next:
kd = (aes_gcm_key_data_t *) cm->key_data[op->key_index];
- aes_gcm (op->src, op->dst, op->aad, op->iv, op->tag, op->len, op->aad_len,
+ aes_gcm ((u8x16u *) op->src, (u8x16u *) op->dst, (u8x16u *) op->aad,
+ (u8x16u *) op->iv, (u8x16u *) op->tag, op->len, op->aad_len,
op->tag_len, kd, AES_KEY_ROUNDS (ks), /* is_encrypt */ 1);
op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
}
static_always_inline u32
-aesni_ops_dec_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[],
- u32 n_ops, aes_key_size_t ks)
+aes_ops_dec_aes_gcm (vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops,
+ aes_key_size_t ks)
{
crypto_native_main_t *cm = &crypto_native_main;
vnet_crypto_op_t *op = ops[0];
next:
kd = (aes_gcm_key_data_t *) cm->key_data[op->key_index];
- rv = aes_gcm (op->src, op->dst, op->aad, op->iv, op->tag, op->len,
+ rv = aes_gcm ((u8x16u *) op->src, (u8x16u *) op->dst, (u8x16u *) op->aad,
+ (u8x16u *) op->iv, (u8x16u *) op->tag, op->len,
op->aad_len, op->tag_len, kd, AES_KEY_ROUNDS (ks),
/* is_encrypt */ 0);
}
static_always_inline void *
-aesni_gcm_key_exp (vnet_crypto_key_t * key, aes_key_size_t ks)
+aes_gcm_key_exp (vnet_crypto_key_t * key, aes_key_size_t ks)
{
aes_gcm_key_data_t *kd;
- __m128i H;
- int i;
+ u8x16 H;
kd = clib_mem_alloc_aligned (sizeof (*kd), CLIB_CACHE_LINE_BYTES);
/* expand AES key */
- aes_key_expand ((__m128i *) kd->Ke, key->data, ks);
+ aes_key_expand ((u8x16 *) kd->Ke, key->data, ks);
/* pre-calculate H */
- H = kd->Ke[0];
- for (i = 1; i < AES_KEY_ROUNDS (ks); i += 1)
- H = _mm_aesenc_si128 (H, kd->Ke[i]);
- H = _mm_aesenclast_si128 (H, kd->Ke[i]);
- H = aesni_gcm_bswap (H);
- ghash_precompute (H, (__m128i *) kd->Hi, 8);
+ H = aes_encrypt_block (u8x16_splat (0), kd->Ke, ks);
+ H = u8x16_reflect (H);
+ ghash_precompute (H, (u8x16 *) kd->Hi, NUM_HI);
+#ifdef __VAES__
+ u8x64 *Ke4 = (u8x64 *) kd->Ke4;
+ for (int i = 0; i < AES_KEY_ROUNDS (ks) + 1; i++)
+ Ke4[i] = u8x64_splat_u8x16 (kd->Ke[i]);
+#endif
return kd;
}
-#define foreach_aesni_gcm_handler_type _(128) _(192) _(256)
+#define foreach_aes_gcm_handler_type _(128) _(192) _(256)
#define _(x) \
-static u32 aesni_ops_dec_aes_gcm_##x \
+static u32 aes_ops_dec_aes_gcm_##x \
(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
-{ return aesni_ops_dec_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \
-static u32 aesni_ops_enc_aes_gcm_##x \
+{ return aes_ops_dec_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \
+static u32 aes_ops_enc_aes_gcm_##x \
(vlib_main_t * vm, vnet_crypto_op_t * ops[], u32 n_ops) \
-{ return aesni_ops_enc_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \
-static void * aesni_gcm_key_exp_##x (vnet_crypto_key_t *key) \
-{ return aesni_gcm_key_exp (key, AES_KEY_##x); }
+{ return aes_ops_enc_aes_gcm (vm, ops, n_ops, AES_KEY_##x); } \
+static void * aes_gcm_key_exp_##x (vnet_crypto_key_t *key) \
+{ return aes_gcm_key_exp (key, AES_KEY_##x); }
-foreach_aesni_gcm_handler_type;
+foreach_aes_gcm_handler_type;
#undef _
clib_error_t *
crypto_native_aes_gcm_init_avx512 (vlib_main_t * vm)
#elif __AVX2__
crypto_native_aes_gcm_init_avx2 (vlib_main_t * vm)
+#elif __aarch64__
+crypto_native_aes_gcm_init_neon (vlib_main_t * vm)
#else
crypto_native_aes_gcm_init_sse42 (vlib_main_t * vm)
#endif
#define _(x) \
vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \
VNET_CRYPTO_OP_AES_##x##_GCM_ENC, \
- aesni_ops_enc_aes_gcm_##x); \
+ aes_ops_enc_aes_gcm_##x); \
vnet_crypto_register_ops_handler (vm, cm->crypto_engine_index, \
VNET_CRYPTO_OP_AES_##x##_GCM_DEC, \
- aesni_ops_dec_aes_gcm_##x); \
- cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_GCM] = aesni_gcm_key_exp_##x;
- foreach_aesni_gcm_handler_type;
+ aes_ops_dec_aes_gcm_##x); \
+ cm->key_fn[VNET_CRYPTO_ALG_AES_##x##_GCM] = aes_gcm_key_exp_##x;
+ foreach_aes_gcm_handler_type;
#undef _
return 0;
}
Code Review / vpp.git / blobdiff