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/*
* Copyright 2019-2023 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 "cipher_aes_ocb.h"
#define OCB_SET_KEY_FN(fn_set_enc_key, fn_set_dec_key, \
fn_block_enc, fn_block_dec, \
fn_stream_enc, fn_stream_dec) \
CRYPTO_ocb128_cleanup(&ctx->ocb); \
fn_set_enc_key(key, keylen * 8, &ctx->ksenc.ks); \
fn_set_dec_key(key, keylen * 8, &ctx->ksdec.ks); \
if (!CRYPTO_ocb128_init(&ctx->ocb, &ctx->ksenc.ks, &ctx->ksdec.ks, \
(block128_f)fn_block_enc, (block128_f)fn_block_dec, \
ctx->base.enc ? (ocb128_f)fn_stream_enc : \
(ocb128_f)fn_stream_dec)) \
return 0; \
ctx->key_set = 1
static int cipher_hw_aes_ocb_generic_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
/*
* We set both the encrypt and decrypt key here because decrypt
* needs both. (i.e- AAD uses encrypt).
*/
# ifdef HWAES_CAPABLE
if (HWAES_CAPABLE) {
OCB_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_set_decrypt_key,
HWAES_encrypt, HWAES_decrypt,
HWAES_ocb_encrypt, HWAES_ocb_decrypt);
} else
# endif
# ifdef VPAES_CAPABLE
if (VPAES_CAPABLE) {
OCB_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_set_decrypt_key,
vpaes_encrypt, vpaes_decrypt, NULL, NULL);
} else
# endif
{
OCB_SET_KEY_FN(AES_set_encrypt_key, AES_set_decrypt_key,
AES_encrypt, AES_decrypt, NULL, NULL);
}
return 1;
}
# if defined(AESNI_CAPABLE)
static int cipher_hw_aes_ocb_aesni_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
OCB_SET_KEY_FN(aesni_set_encrypt_key, aesni_set_decrypt_key,
aesni_encrypt, aesni_decrypt,
aesni_ocb_encrypt, aesni_ocb_decrypt);
return 1;
}
# define PROV_CIPHER_HW_declare() \
static const PROV_CIPHER_HW aesni_ocb = { \
cipher_hw_aes_ocb_aesni_initkey, \
NULL \
};
# define PROV_CIPHER_HW_select() \
if (AESNI_CAPABLE) \
return &aesni_ocb;
#elif defined(SPARC_AES_CAPABLE)
static int cipher_hw_aes_ocb_t4_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
OCB_SET_KEY_FN(aes_t4_set_encrypt_key, aes_t4_set_decrypt_key,
aes_t4_encrypt, aes_t4_decrypt, NULL, NULL);
return 1;
}
# define PROV_CIPHER_HW_declare() \
static const PROV_CIPHER_HW aes_t4_ocb = { \
cipher_hw_aes_ocb_t4_initkey, \
NULL \
};
# define PROV_CIPHER_HW_select() \
if (SPARC_AES_CAPABLE) \
return &aes_t4_ocb;
#elif defined(OPENSSL_CPUID_OBJ) && defined(__riscv) && __riscv_xlen == 64
static int cipher_hw_aes_ocb_rv64i_zknd_zkne_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
OCB_SET_KEY_FN(rv64i_zkne_set_encrypt_key, rv64i_zknd_set_decrypt_key,
rv64i_zkne_encrypt, rv64i_zknd_decrypt, NULL, NULL);
return 1;
}
static int cipher_hw_aes_ocb_rv64i_zvkned_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
/* Zvkned only supports 128 and 256 bit keys. */
if (keylen * 8 == 128 || keylen * 8 == 256) {
OCB_SET_KEY_FN(rv64i_zvkned_set_encrypt_key,
rv64i_zvkned_set_decrypt_key,
rv64i_zvkned_encrypt, rv64i_zvkned_decrypt,
NULL, NULL);
} else {
OCB_SET_KEY_FN(AES_set_encrypt_key, AES_set_encrypt_key,
rv64i_zvkned_encrypt, rv64i_zvkned_decrypt,
NULL, NULL);
}
return 1;
}
# define PROV_CIPHER_HW_declare() \
static const PROV_CIPHER_HW aes_rv64i_zknd_zkne_ocb = { \
cipher_hw_aes_ocb_rv64i_zknd_zkne_initkey, \
NULL \
}; \
static const PROV_CIPHER_HW aes_rv64i_zvkned_ocb = { \
cipher_hw_aes_ocb_rv64i_zvkned_initkey, \
NULL \
};
# define PROV_CIPHER_HW_select() \
if (RISCV_HAS_ZVKNED() && riscv_vlen() >= 128) \
return &aes_rv64i_zvkned_ocb; \
else if (RISCV_HAS_ZKND_AND_ZKNE()) \
return &aes_rv64i_zknd_zkne_ocb;
#elif defined(OPENSSL_CPUID_OBJ) && defined(__riscv) && __riscv_xlen == 32
static int cipher_hw_aes_ocb_rv32i_zknd_zkne_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
OCB_SET_KEY_FN(rv32i_zkne_set_encrypt_key, rv32i_zknd_zkne_set_decrypt_key,
rv32i_zkne_encrypt, rv32i_zknd_decrypt, NULL, NULL);
return 1;
}
static int cipher_hw_aes_ocb_rv32i_zbkb_zknd_zkne_initkey(PROV_CIPHER_CTX *vctx,
const unsigned char *key,
size_t keylen)
{
PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx;
OCB_SET_KEY_FN(rv32i_zbkb_zkne_set_encrypt_key, rv32i_zbkb_zknd_zkne_set_decrypt_key,
rv32i_zkne_encrypt, rv32i_zknd_decrypt, NULL, NULL);
return 1;
}
# define PROV_CIPHER_HW_declare() \
static const PROV_CIPHER_HW aes_rv32i_zknd_zkne_ocb = { \
cipher_hw_aes_ocb_rv32i_zknd_zkne_initkey, \
NULL \
}; \
static const PROV_CIPHER_HW aes_rv32i_zbkb_zknd_zkne_ocb = { \
cipher_hw_aes_ocb_rv32i_zbkb_zknd_zkne_initkey, \
NULL \
};
# define PROV_CIPHER_HW_select() \
if (RISCV_HAS_ZBKB_AND_ZKND_AND_ZKNE()) \
return &aes_rv32i_zbkb_zknd_zkne_ocb; \
if (RISCV_HAS_ZKND_AND_ZKNE()) \
return &aes_rv32i_zknd_zkne_ocb;
#else
# define PROV_CIPHER_HW_declare()
# define PROV_CIPHER_HW_select()
# endif
static const PROV_CIPHER_HW aes_generic_ocb = {
cipher_hw_aes_ocb_generic_initkey,
NULL
};
PROV_CIPHER_HW_declare()
const PROV_CIPHER_HW *ossl_prov_cipher_hw_aes_ocb(size_t keybits)
{
PROV_CIPHER_HW_select()
return &aes_generic_ocb;
}
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