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authorDamjan Marion <dmarion@me.com>2020-01-31 10:24:07 +0100
committerDamjan Marion <damarion@cisco.com>2020-01-31 18:06:09 +0100
commit776644efe78f427a75fc5e122014b44b39d470c3 (patch)
treef8487ba02ad941bc2c09206b3d0477db3cc595ba /src/plugins/crypto_native/aes.h
parent62b1cea6eda4060968f44b2639fdd756617211f4 (diff)
crypto-native: add ARMv8 AES-CBC implementation
Type: feature Change-Id: I32256061b9509880eec843db2f918879cdafbe47 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.h131
1 files changed, 130 insertions, 1 deletions
diff --git a/src/plugins/crypto_native/aes.h b/src/plugins/crypto_native/aes.h
index 721ad5da038..85d6f7916f8 100644
--- a/src/plugins/crypto_native/aes.h
+++ b/src/plugins/crypto_native/aes.h
@@ -1,6 +1,6 @@
/*
*------------------------------------------------------------------
- * Copyright (c) 2019 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
@@ -28,6 +28,8 @@ typedef enum
#define AES_KEY_ROUNDS(x) (10 + x * 2)
#define AES_KEY_BYTES(x) (16 + x * 8)
+#ifdef __x86_64__
+
static_always_inline u8x16
aes_block_load (u8 * p)
{
@@ -191,6 +193,133 @@ aes256_key_expand (u8x16 * key_schedule, u8 * key)
aes256_key_assist (k, 12, _mm_aeskeygenassist_si128 (k[11], 0x20));
aes256_key_assist (k, 14, _mm_aeskeygenassist_si128 (k[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
+aes128_key_expand_round_neon (u8x16 * rk, u32 rcon)
+{
+ u8x16 r, t, last_round = rk[-1], z = { };
+ r = vqtbl1q_u8 (last_round, aese_prep_mask1);
+ r = vaeseq_u8 (r, z);
+ r ^= (u8x16) vdupq_n_u32 (rcon);
+ r ^= last_round;
+ r ^= t = vextq_u8 (z, last_round, 12);
+ r ^= t = vextq_u8 (z, t, 12);
+ r ^= vextq_u8 (z, t, 12);
+ rk[0] = r;
+}
+
+void
+aes128_key_expand (u8x16 * rk, const u8 * k)
+{
+ rk[0] = vld1q_u8 (k);
+ 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 + 4, 0x08);
+ aes128_key_expand_round_neon (rk + 5, 0x10);
+ aes128_key_expand_round_neon (rk + 6, 0x20);
+ aes128_key_expand_round_neon (rk + 7, 0x40);
+ aes128_key_expand_round_neon (rk + 8, 0x80);
+ aes128_key_expand_round_neon (rk + 9, 0x1b);
+ aes128_key_expand_round_neon (rk + 10, 0x36);
+}
+
+static inline void
+aes192_key_expand_round_neon (u8x8 * rk, u32 rcon)
+{
+ u8x8 r, last_round = rk[-1], z = { };
+ u8x16 r2, z2 = { };
+
+ r2 = (u8x16) vdupq_lane_u64 ((uint64x1_t) last_round, 0);
+ r2 = vqtbl1q_u8 (r2, aese_prep_mask1);
+ r2 = vaeseq_u8 (r2, z2);
+ r2 ^= (u8x16) vdupq_n_u32 (rcon);
+
+ r = (u8x8) vdup_laneq_u64 ((u64x2) r2, 0);
+ r ^= rk[-3];
+ r ^= vext_u8 (z, rk[-3], 4);
+ rk[0] = r;
+
+ r = rk[-2] ^ vext_u8 (r, z, 4);
+ r ^= vext_u8 (z, r, 4);
+ rk[1] = r;
+
+ if (rcon == 0x80)
+ return;
+
+ r = rk[-1] ^ vext_u8 (r, z, 4);
+ r ^= vext_u8 (z, r, 4);
+ rk[2] = r;
+}
+
+void
+aes192_key_expand (u8x16 * ek, const u8 * k)
+{
+ u8x8 *rk = (u8x8 *) ek;
+ ek[0] = vld1q_u8 (k);
+ rk[2] = vld1_u8 (k + 16);
+ aes192_key_expand_round_neon (rk + 3, 0x01);
+ aes192_key_expand_round_neon (rk + 6, 0x02);
+ aes192_key_expand_round_neon (rk + 9, 0x04);
+ aes192_key_expand_round_neon (rk + 12, 0x08);
+ aes192_key_expand_round_neon (rk + 15, 0x10);
+ aes192_key_expand_round_neon (rk + 18, 0x20);
+ aes192_key_expand_round_neon (rk + 21, 0x40);
+ aes192_key_expand_round_neon (rk + 24, 0x80);
+}
+
+
+static inline void
+aes256_key_expand_round_neon (u8x16 * rk, u32 rcon)
+{
+ u8x16 r, t, z = { };
+
+ r = vqtbl1q_u8 (rk[-1], rcon ? aese_prep_mask1 : aese_prep_mask2);
+ r = vaeseq_u8 (r, z);
+ if (rcon)
+ r ^= (u8x16) vdupq_n_u32 (rcon);
+ r ^= rk[-2];
+ r ^= t = vextq_u8 (z, rk[-2], 12);
+ r ^= t = vextq_u8 (z, t, 12);
+ r ^= vextq_u8 (z, t, 12);
+ rk[0] = r;
+}
+
+void
+aes256_key_expand (u8x16 * rk, const u8 * k)
+{
+ rk[0] = vld1q_u8 (k);
+ rk[1] = vld1q_u8 (k + 16);
+ aes256_key_expand_round_neon (rk + 2, 0x01);
+ aes256_key_expand_round_neon (rk + 3, 0);
+ aes256_key_expand_round_neon (rk + 4, 0x02);
+ aes256_key_expand_round_neon (rk + 5, 0);
+ aes256_key_expand_round_neon (rk + 6, 0x04);
+ aes256_key_expand_round_neon (rk + 7, 0);
+ aes256_key_expand_round_neon (rk + 8, 0x08);
+ aes256_key_expand_round_neon (rk + 9, 0);
+ aes256_key_expand_round_neon (rk + 10, 0x10);
+ aes256_key_expand_round_neon (rk + 11, 0);
+ aes256_key_expand_round_neon (rk + 12, 0x20);
+ aes256_key_expand_round_neon (rk + 13, 0);
+ aes256_key_expand_round_neon (rk + 14, 0x40);
+}
+
+#endif
static_always_inline void
aes_key_expand (u8x16 * key_schedule, u8 * key, aes_key_size_t ks)