1 /*
2 * Copyright 2019-2020 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 /*
11 * IDEA low level APIs are deprecated for public use, but still ok for internal
12 * use where we're using them to implement the higher level EVP interface, as is
13 * the case here.
14 */
15 #include "internal/deprecated.h"
16
17 #include "cipher_idea.h"
18
cipher_hw_idea_initkey(PROV_CIPHER_CTX * ctx,const unsigned char * key,size_t keylen)19 static int cipher_hw_idea_initkey(PROV_CIPHER_CTX *ctx,
20 const unsigned char *key, size_t keylen)
21 {
22 PROV_IDEA_CTX *ictx = (PROV_IDEA_CTX *)ctx;
23 IDEA_KEY_SCHEDULE *ks = &(ictx->ks.ks);
24
25 if (ctx->enc
26 || ctx->mode == EVP_CIPH_OFB_MODE
27 || ctx->mode == EVP_CIPH_CFB_MODE) {
28 IDEA_set_encrypt_key(key, ks);
29 } else {
30 IDEA_KEY_SCHEDULE tmp;
31
32 IDEA_set_encrypt_key(key, &tmp);
33 IDEA_set_decrypt_key(&tmp, ks);
34 OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE));
35 }
36 return 1;
37 }
38
39 #define PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, fname) \
40 IMPLEMENT_CIPHER_HW_##UCMODE(mode, idea, PROV_IDEA_CTX, IDEA_KEY_SCHEDULE, \
41 fname) static const PROV_CIPHER_HW idea_##mode \
42 = { \
43 cipher_hw_idea_initkey, \
44 cipher_hw_idea_##mode##_cipher \
45 }; \
46 const PROV_CIPHER_HW *ossl_prov_cipher_hw_idea_##mode(size_t keybits) \
47 { \
48 return &idea_##mode; \
49 }
50
51 #define PROV_CIPHER_HW_idea_mode(mode, UCMODE) \
52 PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, IDEA_##mode)
53
54 PROV_CIPHER_HW_idea_mode(cbc, CBC)
55 PROV_CIPHER_HW_idea_mode(ofb64, OFB)
56 PROV_CIPHER_HW_idea_mode(cfb64, CFB)
57 /*
58 * IDEA_ecb_encrypt() does not have a enc parameter - so we create a macro
59 * that ignores this parameter when IMPLEMENT_CIPHER_HW_ecb() is called.
60 */
61 #define IDEA2_ecb_encrypt(in, out, ks, enc) IDEA_ecb_encrypt(in, out, ks)
62
63 PROV_CIPHER_HW_idea_mode_ex(ecb, ECB, IDEA2_ecb)
64