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Diffstat (limited to 'src/lib/libcrypto/dh/dh_pmeth.c')
-rw-r--r--src/lib/libcrypto/dh/dh_pmeth.c264
1 files changed, 0 insertions, 264 deletions
diff --git a/src/lib/libcrypto/dh/dh_pmeth.c b/src/lib/libcrypto/dh/dh_pmeth.c
deleted file mode 100644
index 6d750eb30d..0000000000
--- a/src/lib/libcrypto/dh/dh_pmeth.c
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1/* $OpenBSD: dh_pmeth.c,v 1.9 2014/07/11 08:44:48 jsing Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 2006.
4 */
5/* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <limits.h>
60#include <stdio.h>
61#include <string.h>
62
63#include <openssl/asn1t.h>
64#include <openssl/bn.h>
65#include <openssl/dh.h>
66#include <openssl/err.h>
67#include <openssl/evp.h>
68#include <openssl/x509.h>
69
70#include "evp_locl.h"
71
72/* DH pkey context structure */
73
74typedef struct {
75 /* Parameter gen parameters */
76 int prime_len;
77 int generator;
78 int use_dsa;
79 /* Keygen callback info */
80 int gentmp[2];
81 /* message digest */
82} DH_PKEY_CTX;
83
84static int
85pkey_dh_init(EVP_PKEY_CTX *ctx)
86{
87 DH_PKEY_CTX *dctx;
88
89 dctx = malloc(sizeof(DH_PKEY_CTX));
90 if (!dctx)
91 return 0;
92 dctx->prime_len = 1024;
93 dctx->generator = 2;
94 dctx->use_dsa = 0;
95
96 ctx->data = dctx;
97 ctx->keygen_info = dctx->gentmp;
98 ctx->keygen_info_count = 2;
99
100 return 1;
101}
102
103static int
104pkey_dh_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
105{
106 DH_PKEY_CTX *dctx, *sctx;
107
108 if (!pkey_dh_init(dst))
109 return 0;
110 sctx = src->data;
111 dctx = dst->data;
112 dctx->prime_len = sctx->prime_len;
113 dctx->generator = sctx->generator;
114 dctx->use_dsa = sctx->use_dsa;
115 return 1;
116}
117
118static void
119pkey_dh_cleanup(EVP_PKEY_CTX *ctx)
120{
121 DH_PKEY_CTX *dctx = ctx->data;
122
123 free(dctx);
124}
125
126static int
127pkey_dh_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
128{
129 DH_PKEY_CTX *dctx = ctx->data;
130
131 switch (type) {
132 case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
133 if (p1 < 256)
134 return -2;
135 dctx->prime_len = p1;
136 return 1;
137
138 case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
139 dctx->generator = p1;
140 return 1;
141
142 case EVP_PKEY_CTRL_PEER_KEY:
143 /* Default behaviour is OK */
144 return 1;
145
146 default:
147 return -2;
148 }
149}
150
151static int
152pkey_dh_ctrl_str(EVP_PKEY_CTX *ctx, const char *type, const char *value)
153{
154 long lval;
155 char *ep;
156 int len;
157
158 if (!strcmp(type, "dh_paramgen_prime_len")) {
159 errno = 0;
160 lval = strtol(value, &ep, 10);
161 if (value[0] == '\0' || *ep != '\0')
162 goto not_a_number;
163 if ((errno == ERANGE &&
164 (lval == LONG_MAX || lval == LONG_MIN)) ||
165 (lval > INT_MAX || lval < INT_MIN))
166 goto out_of_range;
167 len = lval;
168 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len);
169 } else if (!strcmp(type, "dh_paramgen_generator")) {
170 errno = 0;
171 lval = strtol(value, &ep, 10);
172 if (value[0] == '\0' || *ep != '\0')
173 goto not_a_number;
174 if ((errno == ERANGE &&
175 (lval == LONG_MAX || lval == LONG_MIN)) ||
176 (lval > INT_MAX || lval < INT_MIN))
177 goto out_of_range;
178 len = lval;
179 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, len);
180 }
181
182not_a_number:
183out_of_range:
184 return -2;
185}
186
187static int
188pkey_dh_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
189{
190 DH *dh = NULL;
191 DH_PKEY_CTX *dctx = ctx->data;
192 BN_GENCB *pcb, cb;
193 int ret;
194
195 if (ctx->pkey_gencb) {
196 pcb = &cb;
197 evp_pkey_set_cb_translate(pcb, ctx);
198 } else
199 pcb = NULL;
200 dh = DH_new();
201 if (!dh)
202 return 0;
203 ret = DH_generate_parameters_ex(dh, dctx->prime_len, dctx->generator,
204 pcb);
205 if (ret)
206 EVP_PKEY_assign_DH(pkey, dh);
207 else
208 DH_free(dh);
209 return ret;
210}
211
212static int
213pkey_dh_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
214{
215 DH *dh = NULL;
216
217 if (ctx->pkey == NULL) {
218 DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
219 return 0;
220 }
221 dh = DH_new();
222 if (!dh)
223 return 0;
224 EVP_PKEY_assign_DH(pkey, dh);
225 /* Note: if error return, pkey is freed by parent routine */
226 if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
227 return 0;
228 return DH_generate_key(pkey->pkey.dh);
229}
230
231static int
232pkey_dh_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
233{
234 int ret;
235
236 if (!ctx->pkey || !ctx->peerkey) {
237 DHerr(DH_F_PKEY_DH_DERIVE, DH_R_KEYS_NOT_SET);
238 return 0;
239 }
240 ret = DH_compute_key(key, ctx->peerkey->pkey.dh->pub_key,
241 ctx->pkey->pkey.dh);
242 if (ret < 0)
243 return ret;
244 *keylen = ret;
245 return 1;
246}
247
248const EVP_PKEY_METHOD dh_pkey_meth = {
249 .pkey_id = EVP_PKEY_DH,
250 .flags = EVP_PKEY_FLAG_AUTOARGLEN,
251
252 .init = pkey_dh_init,
253 .copy = pkey_dh_copy,
254 .cleanup = pkey_dh_cleanup,
255
256 .paramgen = pkey_dh_paramgen,
257
258 .keygen = pkey_dh_keygen,
259
260 .derive = pkey_dh_derive,
261
262 .ctrl = pkey_dh_ctrl,
263 .ctrl_str = pkey_dh_ctrl_str
264};
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