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Diffstat (limited to 'src/lib/libcrypto/dh/dh_key.c')
-rw-r--r--src/lib/libcrypto/dh/dh_key.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/src/lib/libcrypto/dh/dh_key.c b/src/lib/libcrypto/dh/dh_key.c
deleted file mode 100644
index cede53bfc1..0000000000
--- a/src/lib/libcrypto/dh/dh_key.c
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@@ -1,154 +0,0 @@
1/* crypto/dh/dh_key.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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"
61#include <openssl/bn.h>
62#include <openssl/rand.h>
63#include <openssl/dh.h>
64
65int DH_generate_key(DH *dh)
66 {
67 int ok=0;
68 unsigned int i;
69 BN_CTX ctx;
70 BN_MONT_CTX *mont;
71 BIGNUM *pub_key=NULL,*priv_key=NULL;
72
73 BN_CTX_init(&ctx);
74
75 if (dh->priv_key == NULL)
76 {
77 i=dh->length;
78 if (i == 0)
79 {
80 /* Make the number p-1 bits long */
81 i=BN_num_bits(dh->p)-1;
82 }
83 priv_key=BN_new();
84 if (priv_key == NULL) goto err;
85 if (!BN_rand(priv_key,i,0,0)) goto err;
86 }
87 else
88 priv_key=dh->priv_key;
89
90 if (dh->pub_key == NULL)
91 {
92 pub_key=BN_new();
93 if (pub_key == NULL) goto err;
94 }
95 else
96 pub_key=dh->pub_key;
97
98 if ((dh->method_mont_p == NULL) && (dh->flags & DH_FLAG_CACHE_MONT_P))
99 {
100 if ((dh->method_mont_p=(char *)BN_MONT_CTX_new()) != NULL)
101 if (!BN_MONT_CTX_set((BN_MONT_CTX *)dh->method_mont_p,
102 dh->p,&ctx)) goto err;
103 }
104 mont=(BN_MONT_CTX *)dh->method_mont_p;
105
106 if (!BN_mod_exp_mont(pub_key,dh->g,priv_key,dh->p,&ctx,mont)) goto err;
107
108 dh->pub_key=pub_key;
109 dh->priv_key=priv_key;
110 ok=1;
111err:
112 if (ok != 1)
113 DHerr(DH_F_DH_GENERATE_KEY,ERR_R_BN_LIB);
114
115 if ((pub_key != NULL) && (dh->pub_key == NULL)) BN_free(pub_key);
116 if ((priv_key != NULL) && (dh->priv_key == NULL)) BN_free(priv_key);
117 BN_CTX_free(&ctx);
118 return(ok);
119 }
120
121int DH_compute_key(unsigned char *key, BIGNUM *pub_key, DH *dh)
122 {
123 BN_CTX ctx;
124 BN_MONT_CTX *mont;
125 BIGNUM *tmp;
126 int ret= -1;
127
128 BN_CTX_init(&ctx);
129 tmp= &(ctx.bn[ctx.tos++]);
130
131 if (dh->priv_key == NULL)
132 {
133 DHerr(DH_F_DH_COMPUTE_KEY,DH_R_NO_PRIVATE_VALUE);
134 goto err;
135 }
136 if ((dh->method_mont_p == NULL) && (dh->flags & DH_FLAG_CACHE_MONT_P))
137 {
138 if ((dh->method_mont_p=(char *)BN_MONT_CTX_new()) != NULL)
139 if (!BN_MONT_CTX_set((BN_MONT_CTX *)dh->method_mont_p,
140 dh->p,&ctx)) goto err;
141 }
142
143 mont=(BN_MONT_CTX *)dh->method_mont_p;
144 if (!BN_mod_exp_mont(tmp,pub_key,dh->priv_key,dh->p,&ctx,mont))
145 {
146 DHerr(DH_F_DH_COMPUTE_KEY,ERR_R_BN_LIB);
147 goto err;
148 }
149
150 ret=BN_bn2bin(tmp,key);
151err:
152 BN_CTX_free(&ctx);
153 return(ret);
154 }
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