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d02b48c6 | 1 | /* crypto/evp/e_null.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include "cryptlib.h" | |
ec577822 BM |
61 | #include <openssl/evp.h> |
62 | #include <openssl/objects.h> | |
d02b48c6 | 63 | |
1921eaad BL |
64 | static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
65 | const unsigned char *iv,int enc); | |
be06a934 | 66 | static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
b444ac3e | 67 | const unsigned char *in, size_t inl); |
13588350 | 68 | static const EVP_CIPHER n_cipher= |
d02b48c6 RE |
69 | { |
70 | NID_undef, | |
71 | 1,0,0, | |
9ebc37e6 | 72 | EVP_CIPH_FLAG_FIPS, |
d02b48c6 RE |
73 | null_init_key, |
74 | null_cipher, | |
58964a49 RE |
75 | NULL, |
76 | 0, | |
77 | NULL, | |
78 | NULL, | |
8215e7a9 | 79 | NULL, |
7f060601 | 80 | NULL |
d02b48c6 RE |
81 | }; |
82 | ||
13588350 | 83 | const EVP_CIPHER *EVP_enc_null(void) |
d02b48c6 RE |
84 | { |
85 | return(&n_cipher); | |
86 | } | |
87 | ||
1921eaad BL |
88 | static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
89 | const unsigned char *iv, int enc) | |
d02b48c6 | 90 | { |
dbad1690 | 91 | /* memset(&(ctx->c),0,sizeof(ctx->c));*/ |
be06a934 | 92 | return 1; |
d02b48c6 RE |
93 | } |
94 | ||
be06a934 | 95 | static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
b444ac3e | 96 | const unsigned char *in, size_t inl) |
d02b48c6 RE |
97 | { |
98 | if (in != out) | |
b444ac3e | 99 | memcpy((char *)out,(const char *)in,inl); |
be06a934 | 100 | return 1; |
d02b48c6 | 101 | } |