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62867571 RS |
1 | /* |
2 | * Copyright 1995-2016 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 | ||
d02b48c6 | 10 | #include <stdio.h> |
b39fc560 | 11 | #include "internal/cryptlib.h" |
786b0075 RL |
12 | |
13 | #ifndef OPENSSL_NO_IDEA | |
0f113f3e MC |
14 | # include <openssl/evp.h> |
15 | # include <openssl/objects.h> | |
6435f0f6 | 16 | # include "internal/evp_int.h" |
0f113f3e | 17 | # include <openssl/idea.h> |
d02b48c6 | 18 | |
9021a5df | 19 | /* Can't use IMPLEMENT_BLOCK_CIPHER because IDEA_ecb_encrypt is different */ |
6435f0f6 RL |
20 | |
21 | typedef struct { | |
22 | IDEA_KEY_SCHEDULE ks; | |
23 | } EVP_IDEA_KEY; | |
24 | ||
1921eaad | 25 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e | 26 | const unsigned char *iv, int enc); |
d02b48c6 | 27 | |
0f113f3e | 28 | /* |
9021a5df | 29 | * NB IDEA_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a |
0f113f3e | 30 | * special case |
57ae2e24 DSH |
31 | */ |
32 | ||
1921eaad | 33 | static int idea_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
0f113f3e | 34 | const unsigned char *in, size_t inl) |
57ae2e24 | 35 | { |
0f113f3e | 36 | BLOCK_CIPHER_ecb_loop() |
098a2382 | 37 | IDEA_ecb_encrypt(in + i, out + i, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e | 38 | return 1; |
57ae2e24 DSH |
39 | } |
40 | ||
098a2382 M |
41 | BLOCK_CIPHER_func_cbc(idea, IDEA, EVP_IDEA_KEY, ks) |
42 | BLOCK_CIPHER_func_ofb(idea, IDEA, 64, EVP_IDEA_KEY, ks) | |
43 | BLOCK_CIPHER_func_cfb(idea, IDEA, 64, EVP_IDEA_KEY, ks) | |
57ae2e24 | 44 | |
9021a5df | 45 | BLOCK_CIPHER_defs(idea, IDEA_KEY_SCHEDULE, NID_idea, 8, 16, 8, 64, |
0f113f3e MC |
46 | 0, idea_init_key, NULL, |
47 | EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL) | |
57ae2e24 | 48 | |
1921eaad | 49 | static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
0f113f3e MC |
50 | const unsigned char *iv, int enc) |
51 | { | |
52 | if (!enc) { | |
53 | if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_OFB_MODE) | |
54 | enc = 1; | |
55 | else if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CFB_MODE) | |
56 | enc = 1; | |
57 | } | |
58 | if (enc) | |
9021a5df | 59 | IDEA_set_encrypt_key(key, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); |
0f113f3e MC |
60 | else { |
61 | IDEA_KEY_SCHEDULE tmp; | |
d02b48c6 | 62 | |
9021a5df RS |
63 | IDEA_set_encrypt_key(key, &tmp); |
64 | IDEA_set_decrypt_key(&tmp, &EVP_C_DATA(EVP_IDEA_KEY,ctx)->ks); | |
0f113f3e MC |
65 | OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE)); |
66 | } | |
67 | return 1; | |
68 | } | |
d02b48c6 | 69 | |
d02b48c6 | 70 | #endif |