1/*
2 * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <openssl/aes.h>
11#include "prov/ciphercommon.h"
12#include "crypto/aes_platform.h"
13
14/*
15 * Available in cipher_fips.c, and compiled with different values depending
16 * on we're in the FIPS module or not.
17 */
18extern const int ossl_aes_xts_allow_insecure_decrypt;
19
20PROV_CIPHER_FUNC(void, xts_stream,
21                 (const unsigned char *in, unsigned char *out, size_t len,
22                  const AES_KEY *key1, const AES_KEY *key2,
23                  const unsigned char iv[16]));
24
25typedef struct prov_aes_xts_ctx_st {
26    PROV_CIPHER_CTX base;      /* Must be first */
27    union {
28        OSSL_UNION_ALIGN;
29        AES_KEY ks;
30    } ks1, ks2;                /* AES key schedules to use */
31    XTS128_CONTEXT xts;
32    OSSL_xts_stream_fn stream;
33} PROV_AES_XTS_CTX;
34
35const PROV_CIPHER_HW *ossl_prov_cipher_hw_aes_xts(size_t keybits);
36