1 /*
2 * Copyright (c) 2004 The OpenBSD project
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "includes.h"
18
19 #include <openssl/evp.h>
20
21 #include <string.h>
22
23 #if !defined(EVP_CTRL_SET_ACSS_MODE) && (OPENSSL_VERSION_NUMBER >= 0x00907000L)
24
25 #include "acss.h"
26 #include "openbsd-compat/openssl-compat.h"
27
28 #define data(ctx) ((EVP_ACSS_KEY *)(ctx)->cipher_data)
29
30 typedef struct {
31 ACSS_KEY ks;
32 } EVP_ACSS_KEY;
33
34 #define EVP_CTRL_SET_ACSS_MODE 0xff06
35 #define EVP_CTRL_SET_ACSS_SUBKEY 0xff07
36
37 static int
acss_init_key(EVP_CIPHER_CTX * ctx,const unsigned char * key,const unsigned char * iv,int enc)38 acss_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
39 const unsigned char *iv, int enc)
40 {
41 acss_setkey(&data(ctx)->ks,key,enc,ACSS_DATA);
42 return 1;
43 }
44
45 static int
acss_ciph(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,LIBCRYPTO_EVP_INL_TYPE inl)46 acss_ciph(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
47 LIBCRYPTO_EVP_INL_TYPE inl)
48 {
49 acss(&data(ctx)->ks,inl,in,out);
50 return 1;
51 }
52
53 static int
acss_ctrl(EVP_CIPHER_CTX * ctx,int type,int arg,void * ptr)54 acss_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
55 {
56 switch(type) {
57 case EVP_CTRL_SET_ACSS_MODE:
58 data(ctx)->ks.mode = arg;
59 return 1;
60 case EVP_CTRL_SET_ACSS_SUBKEY:
61 acss_setsubkey(&data(ctx)->ks,(unsigned char *)ptr);
62 return 1;
63 default:
64 return -1;
65 }
66 }
67
68 const EVP_CIPHER *
evp_acss(void)69 evp_acss(void)
70 {
71 static EVP_CIPHER acss_cipher;
72
73 memset(&acss_cipher, 0, sizeof(EVP_CIPHER));
74
75 acss_cipher.nid = NID_undef;
76 acss_cipher.block_size = 1;
77 acss_cipher.key_len = 5;
78 acss_cipher.init = acss_init_key;
79 acss_cipher.do_cipher = acss_ciph;
80 acss_cipher.ctx_size = sizeof(EVP_ACSS_KEY);
81 acss_cipher.ctrl = acss_ctrl;
82
83 return (&acss_cipher);
84 }
85 #endif
86
87