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/*
* Copyright 2001-2020 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
*/
/*
* This file uses the low level AES functions (which are deprecated for
* non-internal use) in order to implement provider AES ciphers.
*/
#include "internal/deprecated.h"
#include <openssl/proverr.h>
#include "cipher_aes.h"
static int cipher_hw_aes_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) {
#ifdef HWAES_CAPABLE
if (HWAES_CAPABLE) {
ret = HWAES_set_decrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)HWAES_decrypt;
dat->stream.cbc = NULL;
# ifdef HWAES_cbc_encrypt
if (dat->mode == EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
# endif
# ifdef HWAES_ecb_encrypt
if (dat->mode == EVP_CIPH_ECB_MODE)
dat->stream.ecb = (ecb128_f)HWAES_ecb_encrypt;
# endif
} else
#endif
#ifdef BSAES_CAPABLE
if (BSAES_CAPABLE && dat->mode == EVP_CIPH_CBC_MODE) {
ret = AES_set_decrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)AES_decrypt;
dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
} else
#endif
#ifdef VPAES_CAPABLE
if (VPAES_CAPABLE) {
ret = vpaes_set_decrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)vpaes_decrypt;
dat->stream.cbc = (dat->mode == EVP_CIPH_CBC_MODE)
?(cbc128_f)vpaes_cbc_encrypt : NULL;
} else
#endif
{
ret = AES_set_decrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)AES_decrypt;
dat->stream.cbc = (dat->mode == EVP_CIPH_CBC_MODE)
? (cbc128_f)AES_cbc_encrypt : NULL;
}
} else
#ifdef HWAES_CAPABLE
if (HWAES_CAPABLE) {
ret = HWAES_set_encrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)HWAES_encrypt;
dat->stream.cbc = NULL;
# ifdef HWAES_cbc_encrypt
if (dat->mode == EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
else
# endif
# ifdef HWAES_ecb_encrypt
if (dat->mode == EVP_CIPH_ECB_MODE)
dat->stream.ecb = (ecb128_f)HWAES_ecb_encrypt;
else
# endif
# ifdef HWAES_ctr32_encrypt_blocks
if (dat->mode == EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)HWAES_ctr32_encrypt_blocks;
else
# endif
(void)0; /* terminate potentially open 'else' */
} else
#endif
#ifdef BSAES_CAPABLE
if (BSAES_CAPABLE && dat->mode == EVP_CIPH_CTR_MODE) {
ret = AES_set_encrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)AES_encrypt;
dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
} else
#endif
#ifdef VPAES_CAPABLE
if (VPAES_CAPABLE) {
ret = vpaes_set_encrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)vpaes_encrypt;
dat->stream.cbc = (dat->mode == EVP_CIPH_CBC_MODE)
? (cbc128_f)vpaes_cbc_encrypt : NULL;
} else
#endif
{
ret = AES_set_encrypt_key(key, keylen * 8, ks);
dat->block = (block128_f)AES_encrypt;
dat->stream.cbc = (dat->mode == EVP_CIPH_CBC_MODE)
? (cbc128_f)AES_cbc_encrypt : NULL;
#ifdef AES_CTR_ASM
if (dat->mode == EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
#endif
}
if (ret < 0) {
ERR_raise(ERR_LIB_PROV, PROV_R_AES_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
IMPLEMENT_CIPHER_HW_COPYCTX(cipher_hw_aes_copyctx, PROV_AES_CTX)
#define PROV_CIPHER_HW_aes_mode(mode) \
static const PROV_CIPHER_HW aes_##mode = { \
cipher_hw_aes_initkey, \
ossl_cipher_hw_generic_##mode, \
cipher_hw_aes_copyctx \
}; \
PROV_CIPHER_HW_declare(mode) \
const PROV_CIPHER_HW *ossl_prov_cipher_hw_aes_##mode(size_t keybits) \
{ \
PROV_CIPHER_HW_select(mode) \
return &aes_##mode; \
}
#if defined(AESNI_CAPABLE)
# include "cipher_aes_hw_aesni.inc"
#elif defined(SPARC_AES_CAPABLE)
# include "cipher_aes_hw_t4.inc"
#elif defined(S390X_aes_128_CAPABLE)
# include "cipher_aes_hw_s390x.inc"
#else
/* The generic case */
# define PROV_CIPHER_HW_declare(mode)
# define PROV_CIPHER_HW_select(mode)
#endif
PROV_CIPHER_HW_aes_mode(cbc)
PROV_CIPHER_HW_aes_mode(ecb)
PROV_CIPHER_HW_aes_mode(ofb128)
PROV_CIPHER_HW_aes_mode(cfb128)
PROV_CIPHER_HW_aes_mode(cfb1)
PROV_CIPHER_HW_aes_mode(cfb8)
PROV_CIPHER_HW_aes_mode(ctr)
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