1/*
2 * Copyright 2019 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 "cipher_idea.h"
11
12static int cipher_hw_idea_initkey(PROV_CIPHER_CTX *ctx,
13 const unsigned char *key, size_t keylen)
14{
15 PROV_IDEA_CTX *ictx = (PROV_IDEA_CTX *)ctx;
16 IDEA_KEY_SCHEDULE *ks = &(ictx->ks.ks);
17
18 if (ctx->enc
19 || ctx->mode == EVP_CIPH_OFB_MODE
20 || ctx->mode == EVP_CIPH_CFB_MODE) {
21 IDEA_set_encrypt_key(key, ks);
22 } else {
23 IDEA_KEY_SCHEDULE tmp;
24
25 IDEA_set_encrypt_key(key, &tmp);
26 IDEA_set_decrypt_key(&tmp, ks);
27 OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE));
28 }
29 return 1;
30}
31
32# define PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, fname) \
33IMPLEMENT_CIPHER_HW_##UCMODE(mode, idea, PROV_IDEA_CTX, IDEA_KEY_SCHEDULE, \
34 fname) \
35static const PROV_CIPHER_HW idea_##mode = { \
36 cipher_hw_idea_initkey, \
37 cipher_hw_idea_##mode##_cipher \
38}; \
39const PROV_CIPHER_HW *PROV_CIPHER_HW_idea_##mode(size_t keybits) \
40{ \
41 return &idea_##mode; \
42}
43
44# define PROV_CIPHER_HW_idea_mode(mode, UCMODE) \
45 PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, IDEA_##mode)
46
47PROV_CIPHER_HW_idea_mode(cbc, CBC)
48PROV_CIPHER_HW_idea_mode(ofb64, OFB)
49PROV_CIPHER_HW_idea_mode(cfb64, CFB)
50/*
51 * IDEA_ecb_encrypt() does not have a enc parameter - so we create a macro
52 * that ignores this parameter when IMPLEMENT_CIPHER_HW_ecb() is called.
53 */
54#define IDEA2_ecb_encrypt(in, out, ks, enc) IDEA_ecb_encrypt(in, out, ks)
55
56PROV_CIPHER_HW_idea_mode_ex(ecb, ECB, IDEA2_ecb)
57