6b0a96ce3a
Start adding infrastructure for accelerating guest AES. Begin with a SubBytes + ShiftRows + AddRoundKey primitive. Acked-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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* AES round fragments, generic version
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Copyright (C) 2023 Linaro, Ltd.
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*/
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#ifndef CRYPTO_AES_ROUND_H
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#define CRYPTO_AES_ROUND_H
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/* Hosts with acceleration will usually need a 16-byte vector type. */
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typedef uint8_t AESStateVec __attribute__((vector_size(16)));
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typedef union {
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uint8_t b[16];
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uint32_t w[4];
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uint64_t d[2];
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AESStateVec v;
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} AESState;
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#include "host/crypto/aes-round.h"
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/*
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* Perform SubBytes + ShiftRows + AddRoundKey.
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*/
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void aesenc_SB_SR_AK_gen(AESState *ret, const AESState *st,
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const AESState *rk);
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void aesenc_SB_SR_AK_genrev(AESState *ret, const AESState *st,
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const AESState *rk);
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static inline void aesenc_SB_SR_AK(AESState *r, const AESState *st,
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const AESState *rk, bool be)
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{
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if (HAVE_AES_ACCEL) {
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aesenc_SB_SR_AK_accel(r, st, rk, be);
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} else if (HOST_BIG_ENDIAN == be) {
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aesenc_SB_SR_AK_gen(r, st, rk);
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} else {
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aesenc_SB_SR_AK_genrev(r, st, rk);
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}
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}
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#endif /* CRYPTO_AES_ROUND_H */
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