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/*
* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*-
* RISC-V 64 ZKND ZKNE support for AES modes ecb, cbc, ofb, cfb, ctr.
* This file is included by cipher_aes_hw.c
*/
#define cipher_hw_rv64i_zknd_zkne_cbc ossl_cipher_hw_generic_cbc
#define cipher_hw_rv64i_zknd_zkne_ecb ossl_cipher_hw_generic_ecb
#define cipher_hw_rv64i_zknd_zkne_ofb128 ossl_cipher_hw_generic_ofb128
#define cipher_hw_rv64i_zknd_zkne_cfb128 ossl_cipher_hw_generic_cfb128
#define cipher_hw_rv64i_zknd_zkne_cfb8 ossl_cipher_hw_generic_cfb8
#define cipher_hw_rv64i_zknd_zkne_cfb1 ossl_cipher_hw_generic_cfb1
#define cipher_hw_rv64i_zknd_zkne_ctr ossl_cipher_hw_generic_ctr
static int cipher_hw_rv64i_zknd_zkne_initkey(PROV_CIPHER_CTX *dat,
const unsigned char *key, size_t keylen)
{
int ret;
PROV_AES_CTX *adat = (PROV_AES_CTX *)dat;
AES_KEY *ks = &adat->ks.ks;
dat->ks = ks;
if ((dat->mode == EVP_CIPH_ECB_MODE || dat->mode == EVP_CIPH_CBC_MODE)
&& !dat->enc) {
ret = rv64i_zknd_set_decrypt_key(key, keylen * 8, ks);
dat->block = (block128_f) rv64i_zknd_decrypt;
dat->stream.cbc = NULL;
} else {
ret = rv64i_zkne_set_encrypt_key(key, keylen * 8, ks);
dat->block = (block128_f) rv64i_zkne_encrypt;
dat->stream.cbc = NULL;
}
if (ret < 0) {
ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
#define PROV_CIPHER_HW_declare(mode) \
static const PROV_CIPHER_HW rv64i_zknd_zkne_##mode = { \
cipher_hw_rv64i_zknd_zkne_initkey, \
cipher_hw_rv64i_zknd_zkne_##mode, \
cipher_hw_aes_copyctx \
};
#define PROV_CIPHER_HW_select(mode) \
if (RISCV_HAS_ZKND_AND_ZKNE()) \
return &rv64i_zknd_zkne_##mode;
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