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79 lines
2.5 KiB
79 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* AEGIS common definitions |
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* |
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* Copyright (c) 2018 Ondrej Mosnacek <[email protected]> |
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* Copyright (c) 2018 Red Hat, Inc. All rights reserved. |
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*/ |
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#ifndef _CRYPTO_AEGIS_H |
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#define _CRYPTO_AEGIS_H |
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#include <crypto/aes.h> |
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#include <linux/bitops.h> |
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#include <linux/types.h> |
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#define AEGIS_BLOCK_SIZE 16 |
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union aegis_block { |
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__le64 words64[AEGIS_BLOCK_SIZE / sizeof(__le64)]; |
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__le32 words32[AEGIS_BLOCK_SIZE / sizeof(__le32)]; |
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u8 bytes[AEGIS_BLOCK_SIZE]; |
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}; |
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struct aegis_state; |
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extern int aegis128_have_aes_insn; |
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#define AEGIS_BLOCK_ALIGN (__alignof__(union aegis_block)) |
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#define AEGIS_ALIGNED(p) IS_ALIGNED((uintptr_t)p, AEGIS_BLOCK_ALIGN) |
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bool crypto_aegis128_have_simd(void); |
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void crypto_aegis128_update_simd(struct aegis_state *state, const void *msg); |
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void crypto_aegis128_init_simd(struct aegis_state *state, |
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const union aegis_block *key, |
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const u8 *iv); |
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void crypto_aegis128_encrypt_chunk_simd(struct aegis_state *state, u8 *dst, |
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const u8 *src, unsigned int size); |
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void crypto_aegis128_decrypt_chunk_simd(struct aegis_state *state, u8 *dst, |
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const u8 *src, unsigned int size); |
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int crypto_aegis128_final_simd(struct aegis_state *state, |
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union aegis_block *tag_xor, |
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unsigned int assoclen, |
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unsigned int cryptlen, |
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unsigned int authsize); |
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static __always_inline void crypto_aegis_block_xor(union aegis_block *dst, |
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const union aegis_block *src) |
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{ |
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dst->words64[0] ^= src->words64[0]; |
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dst->words64[1] ^= src->words64[1]; |
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} |
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static __always_inline void crypto_aegis_block_and(union aegis_block *dst, |
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const union aegis_block *src) |
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{ |
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dst->words64[0] &= src->words64[0]; |
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dst->words64[1] &= src->words64[1]; |
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} |
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static __always_inline void crypto_aegis_aesenc(union aegis_block *dst, |
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const union aegis_block *src, |
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const union aegis_block *key) |
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{ |
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const u8 *s = src->bytes; |
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const u32 *t = crypto_ft_tab[0]; |
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u32 d0, d1, d2, d3; |
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d0 = t[s[ 0]] ^ rol32(t[s[ 5]], 8) ^ rol32(t[s[10]], 16) ^ rol32(t[s[15]], 24); |
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d1 = t[s[ 4]] ^ rol32(t[s[ 9]], 8) ^ rol32(t[s[14]], 16) ^ rol32(t[s[ 3]], 24); |
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d2 = t[s[ 8]] ^ rol32(t[s[13]], 8) ^ rol32(t[s[ 2]], 16) ^ rol32(t[s[ 7]], 24); |
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d3 = t[s[12]] ^ rol32(t[s[ 1]], 8) ^ rol32(t[s[ 6]], 16) ^ rol32(t[s[11]], 24); |
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dst->words32[0] = cpu_to_le32(d0) ^ key->words32[0]; |
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dst->words32[1] = cpu_to_le32(d1) ^ key->words32[1]; |
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dst->words32[2] = cpu_to_le32(d2) ^ key->words32[2]; |
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dst->words32[3] = cpu_to_le32(d3) ^ key->words32[3]; |
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} |
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#endif /* _CRYPTO_AEGIS_H */
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