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/*
* AES round fragments, generic version
* SPDX-License-Identifier: GPL-2.0-or-later
*
* Copyright (C) 2023 Linaro, Ltd.
*/
#ifndef CRYPTO_AES_ROUND_H
#define CRYPTO_AES_ROUND_H
/* Hosts with acceleration will usually need a 16-byte vector type. */
typedef uint8_t AESStateVec __attribute__((vector_size(16)));
typedef union {
uint8_t b[16];
uint32_t w[4];
uint64_t d[2];
AESStateVec v;
} AESState;
#include "host/crypto/aes-round.h"
/*
* Perform MixColumns.
*/
void aesenc_MC_gen(AESState *ret, const AESState *st);
void aesenc_MC_genrev(AESState *ret, const AESState *st);
static inline void aesenc_MC(AESState *r, const AESState *st, bool be)
{
if (HAVE_AES_ACCEL) {
aesenc_MC_accel(r, st, be);
} else if (HOST_BIG_ENDIAN == be) {
aesenc_MC_gen(r, st);
} else {
aesenc_MC_genrev(r, st);
}
}
/*
* Perform SubBytes + ShiftRows + AddRoundKey.
*/
void aesenc_SB_SR_AK_gen(AESState *ret, const AESState *st,
const AESState *rk);
void aesenc_SB_SR_AK_genrev(AESState *ret, const AESState *st,
const AESState *rk);
static inline void aesenc_SB_SR_AK(AESState *r, const AESState *st,
const AESState *rk, bool be)
{
if (HAVE_AES_ACCEL) {
aesenc_SB_SR_AK_accel(r, st, rk, be);
} else if (HOST_BIG_ENDIAN == be) {
aesenc_SB_SR_AK_gen(r, st, rk);
} else {
aesenc_SB_SR_AK_genrev(r, st, rk);
}
}
/*
* Perform InvSubBytes + InvShiftRows + AddRoundKey.
*/
void aesdec_ISB_ISR_AK_gen(AESState *ret, const AESState *st,
const AESState *rk);
void aesdec_ISB_ISR_AK_genrev(AESState *ret, const AESState *st,
const AESState *rk);
static inline void aesdec_ISB_ISR_AK(AESState *r, const AESState *st,
const AESState *rk, bool be)
{
if (HAVE_AES_ACCEL) {
aesdec_ISB_ISR_AK_accel(r, st, rk, be);
} else if (HOST_BIG_ENDIAN == be) {
aesdec_ISB_ISR_AK_gen(r, st, rk);
} else {
aesdec_ISB_ISR_AK_genrev(r, st, rk);
}
}
#endif /* CRYPTO_AES_ROUND_H */
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