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authorDamjan Marion <dmarion@me.com>2020-02-12 10:59:14 +0100
committerNeale Ranns <nranns@cisco.com>2020-02-13 12:47:22 +0000
commit622b5ce61971066917cfba9ae795d9cb926f2700 (patch)
tree49ad66aaf27b10d17868bd45b0cc9fe1d4cbf98c /src/plugins/crypto_native/aes.h
parent4e96ddaec8837b8c0bd27a75418e033da68e299b (diff)
crypto-native: add AArch64 AES-GCM native implementation
Type: feature Change-Id: I4f96b0af13b875d491704b010328a1814e1dbda1 Signed-off-by: Damjan Marion <dmarion@me.com>
Diffstat (limited to 'src/plugins/crypto_native/aes.h')
-rw-r--r--src/plugins/crypto_native/aes.h38
1 files changed, 25 insertions, 13 deletions
diff --git a/src/plugins/crypto_native/aes.h b/src/plugins/crypto_native/aes.h
index aacbf8ae34d..b914088e94d 100644
--- a/src/plugins/crypto_native/aes.h
+++ b/src/plugins/crypto_native/aes.h
@@ -28,8 +28,6 @@ typedef enum
#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
};
@@ -37,21 +35,31 @@ static const u8x16 byte_mask_scale = {
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_AES)
+ return vaesmcq_u8 (vaeseq_u8 (a, u8x16_splat (0))) ^ 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_AES)
+ return vaeseq_u8 (a, u8x16_splat (0)) ^ k;
+#endif
}
+#ifdef __x86_64__
+
static_always_inline u8x16
aes_dec_round (u8x16 a, u8x16 k)
{
@@ -63,11 +71,12 @@ aes_dec_last_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
@@ -91,31 +100,40 @@ aes_load_partial (u8x16u * p, int n_bytes)
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 i;
+ int rounds = AES_KEY_ROUNDS (ks);
block ^= round_keys[0];
- for (i = 1; i < AES_KEY_ROUNDS (ks); i += 1)
+ for (int i = 1; i < rounds; i += 1)
block = aes_enc_round (block, round_keys[i]);
- return aes_enc_last_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_AES)
+ return vaesimcq_u8 (a);
+#endif
}
+#ifdef __x86_64__
#define aes_keygen_assist(a, b) \
(u8x16) _mm_aeskeygenassist_si128((__m128i) a, b)
@@ -244,12 +262,6 @@ aes256_key_expand (u8x16 * rk, u8x16u const *k)
#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 =