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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * AEGIS common definitions4 *5 * Copyright (c) 2018 Ondrej Mosnacek <omosnacek@gmail.com>6 * Copyright (c) 2018 Red Hat, Inc. All rights reserved.7 */8 9#ifndef _CRYPTO_AEGIS_H10#define _CRYPTO_AEGIS_H11 12#include <crypto/aes.h>13#include <linux/bitops.h>14#include <linux/types.h>15 16#define AEGIS_BLOCK_SIZE 1617 18union aegis_block {19 __le64 words64[AEGIS_BLOCK_SIZE / sizeof(__le64)];20 __le32 words32[AEGIS_BLOCK_SIZE / sizeof(__le32)];21 u8 bytes[AEGIS_BLOCK_SIZE];22};23 24struct aegis_state;25 26extern int aegis128_have_aes_insn;27 28#define AEGIS_BLOCK_ALIGN (__alignof__(union aegis_block))29#define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t)p, AEGIS_BLOCK_ALIGN)30 31bool crypto_aegis128_have_simd(void);32void crypto_aegis128_update_simd(struct aegis_state *state, const void *msg);33void crypto_aegis128_init_simd(struct aegis_state *state,34 const union aegis_block *key,35 const u8 *iv);36void crypto_aegis128_encrypt_chunk_simd(struct aegis_state *state, u8 *dst,37 const u8 *src, unsigned int size);38void crypto_aegis128_decrypt_chunk_simd(struct aegis_state *state, u8 *dst,39 const u8 *src, unsigned int size);40int crypto_aegis128_final_simd(struct aegis_state *state,41 union aegis_block *tag_xor,42 unsigned int assoclen,43 unsigned int cryptlen,44 unsigned int authsize);45 46static __always_inline void crypto_aegis_block_xor(union aegis_block *dst,47 const union aegis_block *src)48{49 dst->words64[0] ^= src->words64[0];50 dst->words64[1] ^= src->words64[1];51}52 53static __always_inline void crypto_aegis_block_and(union aegis_block *dst,54 const union aegis_block *src)55{56 dst->words64[0] &= src->words64[0];57 dst->words64[1] &= src->words64[1];58}59 60static __always_inline void crypto_aegis_aesenc(union aegis_block *dst,61 const union aegis_block *src,62 const union aegis_block *key)63{64 const u8 *s = src->bytes;65 const u32 *t = crypto_ft_tab[0];66 u32 d0, d1, d2, d3;67 68 d0 = t[s[ 0]] ^ rol32(t[s[ 5]], 8) ^ rol32(t[s[10]], 16) ^ rol32(t[s[15]], 24);69 d1 = t[s[ 4]] ^ rol32(t[s[ 9]], 8) ^ rol32(t[s[14]], 16) ^ rol32(t[s[ 3]], 24);70 d2 = t[s[ 8]] ^ rol32(t[s[13]], 8) ^ rol32(t[s[ 2]], 16) ^ rol32(t[s[ 7]], 24);71 d3 = t[s[12]] ^ rol32(t[s[ 1]], 8) ^ rol32(t[s[ 6]], 16) ^ rol32(t[s[11]], 24);72 73 dst->words32[0] = cpu_to_le32(d0) ^ key->words32[0];74 dst->words32[1] = cpu_to_le32(d1) ^ key->words32[1];75 dst->words32[2] = cpu_to_le32(d2) ^ key->words32[2];76 dst->words32[3] = cpu_to_le32(d3) ^ key->words32[3];77}78 79#endif /* _CRYPTO_AEGIS_H */80