#define AES_KEY_ROUNDS(x) (10 + x * 2)
#define AES_KEY_BYTES(x) (16 + x * 8)
-#ifdef __x86_64__
+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 u8x16
aes_block_load (u8 * p)
{
- return (u8x16) _mm_loadu_si128 ((__m128i *) p);
+ return *(u8x16u *) p;
}
static_always_inline u8x16
aes_enc_round (u8x16 a, u8x16 k)
{
+#if defined (__AES__)
return (u8x16) _mm_aesenc_si128 ((__m128i) a, (__m128i) k);
+#elif defined (__ARM_FEATURE_CRYPTO)
+ return vaesmcq_u8 (vaeseq_u8 (a, u8x16_splat (0))) ^ k;
+#endif
+}
+
+#if defined (__VAES__)
+static_always_inline u8x64
+aes_enc_round_x4 (u8x64 a, u8x64 k)
+{
+ return (u8x64) _mm512_aesenc_epi128 ((__m512i) a, (__m512i) k);
+}
+
+static_always_inline u8x64
+aes_enc_last_round_x4 (u8x64 a, u8x64 k)
+{
+ return (u8x64) _mm512_aesenclast_epi128 ((__m512i) a, (__m512i) k);
}
+static_always_inline u8x64
+aes_dec_round_x4 (u8x64 a, u8x64 k)
+{
+ return (u8x64) _mm512_aesdec_epi128 ((__m512i) a, (__m512i) k);
+}
+
+static_always_inline u8x64
+aes_dec_last_round_x4 (u8x64 a, u8x64 k)
+{
+ return (u8x64) _mm512_aesdeclast_epi128 ((__m512i) a, (__m512i) k);
+}
+#endif
+
static_always_inline u8x16
aes_enc_last_round (u8x16 a, u8x16 k)
{
+#if defined (__AES__)
return (u8x16) _mm_aesenclast_si128 ((__m128i) a, (__m128i) k);
+#elif defined (__ARM_FEATURE_CRYPTO)
+ return vaeseq_u8 (a, u8x16_splat (0)) ^ k;
+#endif
}
+#ifdef __x86_64__
+
static_always_inline u8x16
aes_dec_round (u8x16 a, u8x16 k)
{
{
return (u8x16) _mm_aesdeclast_si128 ((__m128i) a, (__m128i) k);
}
+#endif
static_always_inline void
aes_block_store (u8 * p, u8x16 r)
{
- _mm_storeu_si128 ((__m128i *) p, (__m128i) r);
+ *(u8x16u *) p = r;
+}
+
+static_always_inline u8x16
+aes_byte_mask (u8x16 x, u8 n_bytes)
+{
+ return x & u8x16_is_greater (u8x16_splat (n_bytes), byte_mask_scale);
+}
+
+static_always_inline u8x16
+aes_load_partial (u8x16u * p, int n_bytes)
+{
+ ASSERT (n_bytes <= 16);
+#ifdef __AVX512F__
+ __m128i zero = { };
+ return (u8x16) _mm_mask_loadu_epi8 (zero, (1 << n_bytes) - 1, p);
+#else
+ return aes_byte_mask (CLIB_MEM_OVERFLOW_LOAD (p), n_bytes);
+#endif
+}
+
+static_always_inline void
+aes_store_partial (void *p, u8x16 r, int n_bytes)
+{
+#if __aarch64__
+ clib_memcpy_fast (p, &r, n_bytes);
+#else
+#ifdef __AVX512F__
+ _mm_mask_storeu_epi8 (p, (1 << n_bytes) - 1, (__m128i) r);
+#else
+ u8x16 mask = u8x16_is_greater (u8x16_splat (n_bytes), byte_mask_scale);
+ _mm_maskmoveu_si128 ((__m128i) r, (__m128i) mask, p);
+#endif
+#endif
+}
+
+
+static_always_inline u8x16
+aes_encrypt_block (u8x16 block, const u8x16 * round_keys, aes_key_size_t ks)
+{
+ int rounds = AES_KEY_ROUNDS (ks);
+ block ^= round_keys[0];
+ for (int i = 1; i < rounds; i += 1)
+ block = aes_enc_round (block, round_keys[i]);
+ return aes_enc_last_round (block, round_keys[rounds]);
}
static_always_inline u8x16
aes_inv_mix_column (u8x16 a)
{
+#if defined (__AES__)
return (u8x16) _mm_aesimc_si128 ((__m128i) a);
+#elif defined (__ARM_FEATURE_CRYPTO)
+ return vaesimcq_u8 (a);
+#endif
}
+#ifdef __x86_64__
+#define aes_keygen_assist(a, b) \
+ (u8x16) _mm_aeskeygenassist_si128((__m128i) a, b)
+
/* AES-NI based AES key expansion based on code samples from
Intel(r) Advanced Encryption Standard (AES) New Instructions White Paper
(323641-001) */
static_always_inline void
-aes128_key_assist (__m128i * k, __m128i r)
+aes128_key_assist (u8x16 * rk, u8x16 r)
{
- __m128i t = k[-1];
- t ^= _mm_slli_si128 (t, 4);
- t ^= _mm_slli_si128 (t, 4);
- t ^= _mm_slli_si128 (t, 4);
- k[0] = t ^ _mm_shuffle_epi32 (r, 0xff);
+ u8x16 t = rk[-1];
+ t ^= u8x16_word_shift_left (t, 4);
+ t ^= u8x16_word_shift_left (t, 4);
+ t ^= u8x16_word_shift_left (t, 4);
+ rk[0] = t ^ (u8x16) u32x4_shuffle ((u32x4) r, 3, 3, 3, 3);
}
static_always_inline void
-aes128_key_expand (u8x16 * key_schedule, u8 * key)
+aes128_key_expand (u8x16 *rk, u8x16u const *k)
{
- __m128i *k = (__m128i *) key_schedule;
- k[0] = _mm_loadu_si128 ((const __m128i *) key);
- aes128_key_assist (k + 1, _mm_aeskeygenassist_si128 (k[0], 0x01));
- aes128_key_assist (k + 2, _mm_aeskeygenassist_si128 (k[1], 0x02));
- aes128_key_assist (k + 3, _mm_aeskeygenassist_si128 (k[2], 0x04));
- aes128_key_assist (k + 4, _mm_aeskeygenassist_si128 (k[3], 0x08));
- aes128_key_assist (k + 5, _mm_aeskeygenassist_si128 (k[4], 0x10));
- aes128_key_assist (k + 6, _mm_aeskeygenassist_si128 (k[5], 0x20));
- aes128_key_assist (k + 7, _mm_aeskeygenassist_si128 (k[6], 0x40));
- aes128_key_assist (k + 8, _mm_aeskeygenassist_si128 (k[7], 0x80));
- aes128_key_assist (k + 9, _mm_aeskeygenassist_si128 (k[8], 0x1b));
- aes128_key_assist (k + 10, _mm_aeskeygenassist_si128 (k[9], 0x36));
+ rk[0] = k[0];
+ aes128_key_assist (rk + 1, aes_keygen_assist (rk[0], 0x01));
+ aes128_key_assist (rk + 2, aes_keygen_assist (rk[1], 0x02));
+ aes128_key_assist (rk + 3, aes_keygen_assist (rk[2], 0x04));
+ aes128_key_assist (rk + 4, aes_keygen_assist (rk[3], 0x08));
+ aes128_key_assist (rk + 5, aes_keygen_assist (rk[4], 0x10));
+ aes128_key_assist (rk + 6, aes_keygen_assist (rk[5], 0x20));
+ aes128_key_assist (rk + 7, aes_keygen_assist (rk[6], 0x40));
+ aes128_key_assist (rk + 8, aes_keygen_assist (rk[7], 0x80));
+ aes128_key_assist (rk + 9, aes_keygen_assist (rk[8], 0x1b));
+ aes128_key_assist (rk + 10, aes_keygen_assist (rk[9], 0x36));
}
static_always_inline void
-aes192_key_assist (__m128i * r1, __m128i * r2, __m128i key_assist)
+aes192_key_assist (u8x16 * r1, u8x16 * r2, u8x16 key_assist)
{
- __m128i t;
- *r1 ^= t = _mm_slli_si128 (*r1, 0x4);
- *r1 ^= t = _mm_slli_si128 (t, 0x4);
- *r1 ^= _mm_slli_si128 (t, 0x4);
- *r1 ^= _mm_shuffle_epi32 (key_assist, 0x55);
- *r2 ^= _mm_slli_si128 (*r2, 0x4);
- *r2 ^= _mm_shuffle_epi32 (*r1, 0xff);
+ u8x16 t;
+ r1[0] ^= t = u8x16_word_shift_left (r1[0], 4);
+ r1[0] ^= t = u8x16_word_shift_left (t, 4);
+ r1[0] ^= u8x16_word_shift_left (t, 4);
+ r1[0] ^= (u8x16) _mm_shuffle_epi32 ((__m128i) key_assist, 0x55);
+ r2[0] ^= u8x16_word_shift_left (r2[0], 4);
+ r2[0] ^= (u8x16) _mm_shuffle_epi32 ((__m128i) r1[0], 0xff);
}
static_always_inline void
-aes192_key_expand (u8x16 * key_schedule, u8 * key)
+aes192_key_expand (u8x16 * rk, u8x16u const *k)
{
- __m128i r1, r2, *k = (__m128i *) key_schedule;
+ u8x16 r1, r2;
- k[0] = r1 = _mm_loadu_si128 ((__m128i *) key);
- /* load the 24-bytes key as 2 * 16-bytes (and ignore last 8-bytes) */
- k[1] = r2 = CLIB_MEM_OVERFLOW_LOAD (_mm_loadu_si128, (__m128i *) key + 1);
+ rk[0] = r1 = k[0];
+ /* *INDENT-OFF* */
+ rk[1] = r2 = (u8x16) (u64x2) { *(u64 *) (k + 1), 0 };
+ /* *INDENT-ON* */
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x1));
- k[1] = (__m128i) _mm_shuffle_pd ((__m128d) k[1], (__m128d) r1, 0);
- k[2] = (__m128i) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x1));
+ rk[1] = (u8x16) _mm_shuffle_pd ((__m128d) rk[1], (__m128d) r1, 0);
+ rk[2] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x2));
- k[3] = r1;
- k[4] = r2;
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x2));
+ rk[3] = r1;
+ rk[4] = r2;
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x4));
- k[4] = (__m128i) _mm_shuffle_pd ((__m128d) k[4], (__m128d) r1, 0);
- k[5] = (__m128i) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x4));
+ rk[4] = (u8x16) _mm_shuffle_pd ((__m128d) rk[4], (__m128d) r1, 0);
+ rk[5] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x8));
- k[6] = r1;
- k[7] = r2;
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x8));
+ rk[6] = r1;
+ rk[7] = r2;
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x10));
- k[7] = (__m128i) _mm_shuffle_pd ((__m128d) k[7], (__m128d) r1, 0);
- k[8] = (__m128i) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x10));
+ rk[7] = (u8x16) _mm_shuffle_pd ((__m128d) rk[7], (__m128d) r1, 0);
+ rk[8] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x20));
- k[9] = r1;
- k[10] = r2;
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x20));
+ rk[9] = r1;
+ rk[10] = r2;
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x40));
- k[10] = (__m128i) _mm_shuffle_pd ((__m128d) k[10], (__m128d) r1, 0);
- k[11] = (__m128i) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x40));
+ rk[10] = (u8x16) _mm_shuffle_pd ((__m128d) rk[10], (__m128d) r1, 0);
+ rk[11] = (u8x16) _mm_shuffle_pd ((__m128d) r1, (__m128d) r2, 1);
- aes192_key_assist (&r1, &r2, _mm_aeskeygenassist_si128 (r2, 0x80));
- k[12] = r1;
+ aes192_key_assist (&r1, &r2, aes_keygen_assist (r2, 0x80));
+ rk[12] = r1;
}
static_always_inline void
-aes256_key_assist (__m128i * k, int i, __m128i key_assist)
+aes256_key_assist (u8x16 * rk, int i, u8x16 key_assist)
{
- __m128i r, t;
- k += i;
- r = k[-2];
- r ^= t = _mm_slli_si128 (r, 0x4);
- r ^= t = _mm_slli_si128 (t, 0x4);
- r ^= _mm_slli_si128 (t, 0x4);
- r ^= _mm_shuffle_epi32 (key_assist, 0xff);
- k[0] = r;
+ u8x16 r, t;
+ rk += i;
+ r = rk[-2];
+ r ^= t = u8x16_word_shift_left (r, 4);
+ r ^= t = u8x16_word_shift_left (t, 4);
+ r ^= u8x16_word_shift_left (t, 4);
+ r ^= (u8x16) u32x4_shuffle ((u32x4) key_assist, 3, 3, 3, 3);
+ rk[0] = r;
if (i >= 14)
return;
- r = k[-1];
- r ^= t = _mm_slli_si128 (r, 0x4);
- r ^= t = _mm_slli_si128 (t, 0x4);
- r ^= _mm_slli_si128 (t, 0x4);
- r ^= _mm_shuffle_epi32 (_mm_aeskeygenassist_si128 (k[0], 0x0), 0xaa);
- k[1] = r;
+ key_assist = aes_keygen_assist (rk[0], 0x0);
+ r = rk[-1];
+ r ^= t = u8x16_word_shift_left (r, 4);
+ r ^= t = u8x16_word_shift_left (t, 4);
+ r ^= u8x16_word_shift_left (t, 4);
+ r ^= (u8x16) u32x4_shuffle ((u32x4) key_assist, 2, 2, 2, 2);
+ rk[1] = r;
}
static_always_inline void
-aes256_key_expand (u8x16 * key_schedule, u8 * key)
+aes256_key_expand (u8x16 * rk, u8x16u const *k)
{
- __m128i *k = (__m128i *) key_schedule;
- k[0] = _mm_loadu_si128 ((__m128i *) key);
- k[1] = _mm_loadu_si128 ((__m128i *) (key + 16));
- aes256_key_assist (k, 2, _mm_aeskeygenassist_si128 (k[1], 0x01));
- aes256_key_assist (k, 4, _mm_aeskeygenassist_si128 (k[3], 0x02));
- aes256_key_assist (k, 6, _mm_aeskeygenassist_si128 (k[5], 0x04));
- aes256_key_assist (k, 8, _mm_aeskeygenassist_si128 (k[7], 0x08));
- aes256_key_assist (k, 10, _mm_aeskeygenassist_si128 (k[9], 0x10));
- aes256_key_assist (k, 12, _mm_aeskeygenassist_si128 (k[11], 0x20));
- aes256_key_assist (k, 14, _mm_aeskeygenassist_si128 (k[13], 0x40));
+ rk[0] = k[0];
+ rk[1] = k[1];
+ aes256_key_assist (rk, 2, aes_keygen_assist (rk[1], 0x01));
+ aes256_key_assist (rk, 4, aes_keygen_assist (rk[3], 0x02));
+ aes256_key_assist (rk, 6, aes_keygen_assist (rk[5], 0x04));
+ aes256_key_assist (rk, 8, aes_keygen_assist (rk[7], 0x08));
+ aes256_key_assist (rk, 10, aes_keygen_assist (rk[9], 0x10));
+ aes256_key_assist (rk, 12, aes_keygen_assist (rk[11], 0x20));
+ aes256_key_assist (rk, 14, aes_keygen_assist (rk[13], 0x40));
}
#endif
#ifdef __aarch64__
-static_always_inline u8x16
-aes_inv_mix_column (u8x16 a)
-{
- return vaesimcq_u8 (a);
-}
-
static const u8x16 aese_prep_mask1 =
{ 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12 };
static const u8x16 aese_prep_mask2 =
{ 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15, 12, 13, 14, 15 };
-static inline void
+static_always_inline void
aes128_key_expand_round_neon (u8x16 * rk, u32 rcon)
{
u8x16 r, t, last_round = rk[-1], z = { };
rk[0] = r;
}
-void
-aes128_key_expand (u8x16 * rk, const u8 * k)
+static_always_inline void
+aes128_key_expand (u8x16 *rk, u8x16u const *k)
{
- rk[0] = vld1q_u8 (k);
+ rk[0] = k[0];
aes128_key_expand_round_neon (rk + 1, 0x01);
aes128_key_expand_round_neon (rk + 2, 0x02);
aes128_key_expand_round_neon (rk + 3, 0x04);
aes128_key_expand_round_neon (rk + 10, 0x36);
}
-static inline void
+static_always_inline void
aes192_key_expand_round_neon (u8x8 * rk, u32 rcon)
{
u8x8 r, last_round = rk[-1], z = { };
rk[2] = r;
}
-void
-aes192_key_expand (u8x16 * ek, const u8 * k)
+static_always_inline void
+aes192_key_expand (u8x16 * ek, const u8x16u * k)
{
u8x8 *rk = (u8x8 *) ek;
- ek[0] = vld1q_u8 (k);
- rk[2] = vld1_u8 (k + 16);
+ ek[0] = k[0];
+ rk[2] = *(u8x8u *) (k + 1);
aes192_key_expand_round_neon (rk + 3, 0x01);
aes192_key_expand_round_neon (rk + 6, 0x02);
aes192_key_expand_round_neon (rk + 9, 0x04);
}
-static inline void
+static_always_inline void
aes256_key_expand_round_neon (u8x16 * rk, u32 rcon)
{
u8x16 r, t, z = { };
rk[0] = r;
}
-void
-aes256_key_expand (u8x16 * rk, const u8 * k)
+static_always_inline void
+aes256_key_expand (u8x16 *rk, u8x16u const *k)
{
- rk[0] = vld1q_u8 (k);
- rk[1] = vld1q_u8 (k + 16);
+ rk[0] = k[0];
+ rk[1] = k[1];
aes256_key_expand_round_neon (rk + 2, 0x01);
aes256_key_expand_round_neon (rk + 3, 0);
aes256_key_expand_round_neon (rk + 4, 0x02);
#endif
static_always_inline void
-aes_key_expand (u8x16 * key_schedule, u8 * key, aes_key_size_t ks)
+aes_key_expand (u8x16 * key_schedule, u8 const *key, aes_key_size_t ks)
{
switch (ks)
{
case AES_KEY_128:
- aes128_key_expand (key_schedule, key);
+ aes128_key_expand (key_schedule, (u8x16u const *) key);
break;
case AES_KEY_192:
- aes192_key_expand (key_schedule, key);
+ aes192_key_expand (key_schedule, (u8x16u const *) key);
break;
case AES_KEY_256:
- aes256_key_expand (key_schedule, key);
+ aes256_key_expand (key_schedule, (u8x16u const *) key);
break;
}
}
Code Review / vpp.git / blobdiff