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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/evp/e_idea.c
2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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
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
15 #include "internal/deprecated.h"
18 #include "internal/cryptlib.h"
20 #ifndef OPENSSL_NO_IDEA
21 # include <openssl/evp.h>
22 # include <openssl/objects.h>
23 # include "crypto/evp.h"
24 # include <openssl/idea.h>
25 # include "evp_local.h"
27 /* Can't use IMPLEMENT_BLOCK_CIPHER because IDEA_ecb_encrypt is different */
33 static int idea_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
34 const unsigned char *iv
, int enc
);
37 * NB IDEA_ecb_encrypt doesn't take an 'encrypt' argument so we treat it as a
41 static int idea_ecb_cipher(EVP_CIPHER_CTX
*ctx
, unsigned char *out
,
42 const unsigned char *in
, size_t inl
)
44 BLOCK_CIPHER_ecb_loop()
45 IDEA_ecb_encrypt(in
+ i
, out
+ i
, &EVP_C_DATA(EVP_IDEA_KEY
,ctx
)->ks
);
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
)
53 BLOCK_CIPHER_defs(idea
, IDEA_KEY_SCHEDULE
, NID_idea
, 8, 16, 8, 64,
54 0, idea_init_key
, NULL
,
55 EVP_CIPHER_set_asn1_iv
, EVP_CIPHER_get_asn1_iv
, NULL
)
57 static int idea_init_key(EVP_CIPHER_CTX
*ctx
, const unsigned char *key
,
58 const unsigned char *iv
, int enc
)
61 if (EVP_CIPHER_CTX_mode(ctx
) == EVP_CIPH_OFB_MODE
)
63 else if (EVP_CIPHER_CTX_mode(ctx
) == EVP_CIPH_CFB_MODE
)
67 IDEA_set_encrypt_key(key
, &EVP_C_DATA(EVP_IDEA_KEY
,ctx
)->ks
);
69 IDEA_KEY_SCHEDULE tmp
;
71 IDEA_set_encrypt_key(key
, &tmp
);
72 IDEA_set_decrypt_key(&tmp
, &EVP_C_DATA(EVP_IDEA_KEY
,ctx
)->ks
);
73 OPENSSL_cleanse((unsigned char *)&tmp
, sizeof(IDEA_KEY_SCHEDULE
));