From 776644efe78f427a75fc5e122014b44b39d470c3 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Fri, 31 Jan 2020 10:24:07 +0100 Subject: crypto-native: add ARMv8 AES-CBC implementation Type: feature Change-Id: I32256061b9509880eec843db2f918879cdafbe47 Signed-off-by: Damjan Marion --- src/plugins/crypto_native/aes.h | 131 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 130 insertions(+), 1 deletion(-) (limited to 'src/plugins/crypto_native/aes.h') 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) -- cgit 1.2.3-korg