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 "prov/ciphercommon.h"
11#include "crypto/aes_platform.h"
12#include "crypto/siv.h"
13
14typedef struct prov_cipher_hw_aes_siv_st {
15    int (*initkey)(void *ctx, const uint8_t *key, size_t keylen);
16    int (*cipher)(void *ctx, unsigned char *out, const unsigned char *in,
17                  size_t len);
18    void (*setspeed)(void *ctx, int speed);
19    int (*settag)(void *ctx, const unsigned char *tag, size_t tagl);
20    void (*cleanup)(void *ctx);
21    int (*dupctx)(void *src, void *dst);
22} PROV_CIPHER_HW_AES_SIV;
23
24typedef struct prov_siv_ctx_st {
25    unsigned int mode;       /* The mode that we are using */
26    unsigned int enc : 1;    /* Set to 1 if we are encrypting or 0 otherwise */
27    size_t keylen;           /* The input keylength (twice the alg key length) */
28    size_t taglen;           /* the taglen is the same as the sivlen */
29    SIV128_CONTEXT siv;
30    EVP_CIPHER *ctr;        /* These are fetched - so we need to free them */
31    EVP_CIPHER *cbc;
32    const PROV_CIPHER_HW_AES_SIV *hw;
33    OSSL_LIB_CTX *libctx;
34} PROV_AES_SIV_CTX;
35
36const PROV_CIPHER_HW_AES_SIV *ossl_prov_cipher_hw_aes_siv(size_t keybits);
37