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Commit | Line | Data |
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62867571 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. |
0f113f3e | 3 | * |
4a8b0c55 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
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 | |
d02b48c6 RE |
8 | */ |
9 | ||
da2d32f6 P |
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 | ||
d02b48c6 | 17 | #include <stdio.h> |
b39fc560 | 18 | #include "internal/cryptlib.h" |
786b0075 RL |
19 | |
20 | #ifndef OPENSSL_NO_IDEA | |
0f113f3e MC |
21 | # include <openssl/evp.h> |
22 | # include <openssl/objects.h> | |
25f2138b | 23 | # include "crypto/evp.h" |
0f113f3e | 24 | # include <openssl/idea.h> |
2f5c405a | 25 | # include "evp_local.h" |
d02b48c6 | 26 | |
9021a5df | 27 | /* Can't use IMPLEMENT_BLOCK_CIPHER because IDEA_ecb_encrypt is different */ |
6435f0f6 RL |
28 | |
29 | typedef struct { | |
30 | IDEA_KEY_SCHEDULE ks; | |
31 | } EVP_IDEA_KEY; | |
32 | ||
1921eaad | 33 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e | 34 | const unsigned char *iv, int enc); |
d02b48c6 | 35 | |
0f113f3e | 36 | /* |
9021a5df | 37 | * NB IDEA_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a |
0f113f3e | 38 | * special case |
57ae2e24 DSH |
39 | */ |
40 | ||
1921eaad | 41 | static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 42 | const unsigned char *in, size_t inl) |
57ae2e24 | 43 | { |
0f113f3e | 44 | BLOCK_CIPHER_ecb_loop() |
098a2382 | 45 | IDEA_ecb_encrypt(in + i, out + i, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e | 46 | return 1; |
57ae2e24 DSH |
47 | } |
48 | ||
098a2382 M |
49 | BLOCK_CIPHER_func_cbc(idea, IDEA, EVP_IDEA_KEY, ks) |
50 | BLOCK_CIPHER_func_ofb(idea, IDEA, 64, EVP_IDEA_KEY, ks) | |
51 | BLOCK_CIPHER_func_cfb(idea, IDEA, 64, EVP_IDEA_KEY, ks) | |
57ae2e24 | 52 | |
9021a5df | 53 | BLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64, |
0f113f3e MC |
54 | 0, idea_init_key, NULL, |
55 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) | |
57ae2e24 | 56 | |
1921eaad | 57 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
58 | const unsigned char *iv, int enc) |
59 | { | |
60 | if (!enc) { | |
61 | if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) | |
62 | enc = 1; | |
63 | else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) | |
64 | enc = 1; | |
65 | } | |
66 | if (enc) | |
9021a5df | 67 | IDEA_set_encrypt_key(key, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e MC |
68 | else { |
69 | IDEA_KEY_SCHEDULE tmp; | |
d02b48c6 | 70 | |
9021a5df RS |
71 | IDEA_set_encrypt_key(key, &tmp); |
72 | IDEA_set_decrypt_key(&tmp, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); | |
0f113f3e MC |
73 | OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE)); |
74 | } | |
75 | return 1; | |
76 | } | |
d02b48c6 | 77 | |
d02b48c6 | 78 | #endif |