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-rw-r--r--src/lib/libcrypto/ec/ec_pmeth.c323
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diff --git a/src/lib/libcrypto/ec/ec_pmeth.c b/src/lib/libcrypto/ec/ec_pmeth.c
deleted file mode 100644
index a52bff1f2f..0000000000
--- a/src/lib/libcrypto/ec/ec_pmeth.c
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1/* $OpenBSD: ec_pmeth.c,v 1.9 2015/06/20 14:19:39 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 <stdio.h>
60#include <string.h>
61
62#include <openssl/asn1t.h>
63#include <openssl/ec.h>
64#include <openssl/ecdsa.h>
65#include <openssl/err.h>
66#include <openssl/evp.h>
67#include <openssl/x509.h>
68
69#include "evp_locl.h"
70
71/* EC pkey context structure */
72
73typedef struct {
74 /* Key and paramgen group */
75 EC_GROUP *gen_group;
76 /* message digest */
77 const EVP_MD *md;
78} EC_PKEY_CTX;
79
80static int
81pkey_ec_init(EVP_PKEY_CTX * ctx)
82{
83 EC_PKEY_CTX *dctx;
84 dctx = malloc(sizeof(EC_PKEY_CTX));
85 if (!dctx)
86 return 0;
87 dctx->gen_group = NULL;
88 dctx->md = NULL;
89
90 ctx->data = dctx;
91
92 return 1;
93}
94
95static int
96pkey_ec_copy(EVP_PKEY_CTX * dst, EVP_PKEY_CTX * src)
97{
98 EC_PKEY_CTX *dctx, *sctx;
99 if (!pkey_ec_init(dst))
100 return 0;
101 sctx = src->data;
102 dctx = dst->data;
103 if (sctx->gen_group) {
104 dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
105 if (!dctx->gen_group)
106 return 0;
107 }
108 dctx->md = sctx->md;
109 return 1;
110}
111
112static void
113pkey_ec_cleanup(EVP_PKEY_CTX * ctx)
114{
115 EC_PKEY_CTX *dctx = ctx->data;
116 if (dctx) {
117 EC_GROUP_free(dctx->gen_group);
118 free(dctx);
119 }
120}
121
122static int
123pkey_ec_sign(EVP_PKEY_CTX * ctx, unsigned char *sig, size_t * siglen,
124 const unsigned char *tbs, size_t tbslen)
125{
126 int ret, type;
127 unsigned int sltmp;
128 EC_PKEY_CTX *dctx = ctx->data;
129 EC_KEY *ec = ctx->pkey->pkey.ec;
130
131 if (!sig) {
132 *siglen = ECDSA_size(ec);
133 return 1;
134 } else if (*siglen < (size_t) ECDSA_size(ec)) {
135 ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
136 return 0;
137 }
138 if (dctx->md)
139 type = EVP_MD_type(dctx->md);
140 else
141 type = NID_sha1;
142
143
144 ret = ECDSA_sign(type, tbs, tbslen, sig, &sltmp, ec);
145
146 if (ret <= 0)
147 return ret;
148 *siglen = (size_t) sltmp;
149 return 1;
150}
151
152static int
153pkey_ec_verify(EVP_PKEY_CTX * ctx,
154 const unsigned char *sig, size_t siglen,
155 const unsigned char *tbs, size_t tbslen)
156{
157 int ret, type;
158 EC_PKEY_CTX *dctx = ctx->data;
159 EC_KEY *ec = ctx->pkey->pkey.ec;
160
161 if (dctx->md)
162 type = EVP_MD_type(dctx->md);
163 else
164 type = NID_sha1;
165
166 ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
167
168 return ret;
169}
170
171static int
172pkey_ec_derive(EVP_PKEY_CTX * ctx, unsigned char *key, size_t * keylen)
173{
174 int ret;
175 size_t outlen;
176 const EC_POINT *pubkey = NULL;
177 if (!ctx->pkey || !ctx->peerkey) {
178 ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
179 return 0;
180 }
181 if (!key) {
182 const EC_GROUP *group;
183 group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
184 *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
185 return 1;
186 }
187 pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
188
189 /*
190 * NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
191 * not an error, the result is truncated.
192 */
193
194 outlen = *keylen;
195
196 ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0);
197 if (ret < 0)
198 return ret;
199 *keylen = ret;
200 return 1;
201}
202
203static int
204pkey_ec_ctrl(EVP_PKEY_CTX * ctx, int type, int p1, void *p2)
205{
206 EC_PKEY_CTX *dctx = ctx->data;
207 EC_GROUP *group;
208 switch (type) {
209 case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
210 group = EC_GROUP_new_by_curve_name(p1);
211 if (group == NULL) {
212 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
213 return 0;
214 }
215 EC_GROUP_free(dctx->gen_group);
216 dctx->gen_group = group;
217 return 1;
218
219 case EVP_PKEY_CTRL_MD:
220 if (EVP_MD_type((const EVP_MD *) p2) != NID_sha1 &&
221 EVP_MD_type((const EVP_MD *) p2) != NID_ecdsa_with_SHA1 &&
222 EVP_MD_type((const EVP_MD *) p2) != NID_sha224 &&
223 EVP_MD_type((const EVP_MD *) p2) != NID_sha256 &&
224 EVP_MD_type((const EVP_MD *) p2) != NID_sha384 &&
225 EVP_MD_type((const EVP_MD *) p2) != NID_sha512) {
226 ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
227 return 0;
228 }
229 dctx->md = p2;
230 return 1;
231
232 case EVP_PKEY_CTRL_PEER_KEY:
233 /* Default behaviour is OK */
234 case EVP_PKEY_CTRL_DIGESTINIT:
235 case EVP_PKEY_CTRL_PKCS7_SIGN:
236 case EVP_PKEY_CTRL_CMS_SIGN:
237 return 1;
238
239 default:
240 return -2;
241
242 }
243}
244
245static int
246pkey_ec_ctrl_str(EVP_PKEY_CTX * ctx,
247 const char *type, const char *value)
248{
249 if (!strcmp(type, "ec_paramgen_curve")) {
250 int nid;
251 nid = EC_curve_nist2nid(value);
252 if (nid == NID_undef)
253 nid = OBJ_sn2nid(value);
254 if (nid == NID_undef)
255 nid = OBJ_ln2nid(value);
256 if (nid == NID_undef) {
257 ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
258 return 0;
259 }
260 return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
261 }
262 return -2;
263}
264
265static int
266pkey_ec_paramgen(EVP_PKEY_CTX * ctx, EVP_PKEY * pkey)
267{
268 EC_KEY *ec = NULL;
269 EC_PKEY_CTX *dctx = ctx->data;
270 int ret = 0;
271 if (dctx->gen_group == NULL) {
272 ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
273 return 0;
274 }
275 ec = EC_KEY_new();
276 if (!ec)
277 return 0;
278 ret = EC_KEY_set_group(ec, dctx->gen_group);
279 if (ret)
280 EVP_PKEY_assign_EC_KEY(pkey, ec);
281 else
282 EC_KEY_free(ec);
283 return ret;
284}
285
286static int
287pkey_ec_keygen(EVP_PKEY_CTX * ctx, EVP_PKEY * pkey)
288{
289 EC_KEY *ec = NULL;
290 if (ctx->pkey == NULL) {
291 ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
292 return 0;
293 }
294 ec = EC_KEY_new();
295 if (!ec)
296 return 0;
297 EVP_PKEY_assign_EC_KEY(pkey, ec);
298 /* Note: if error return, pkey is freed by parent routine */
299 if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
300 return 0;
301 return EC_KEY_generate_key(pkey->pkey.ec);
302}
303
304const EVP_PKEY_METHOD ec_pkey_meth = {
305 .pkey_id = EVP_PKEY_EC,
306
307 .init = pkey_ec_init,
308 .copy = pkey_ec_copy,
309 .cleanup = pkey_ec_cleanup,
310
311 .paramgen = pkey_ec_paramgen,
312
313 .keygen = pkey_ec_keygen,
314
315 .sign = pkey_ec_sign,
316
317 .verify = pkey_ec_verify,
318
319 .derive = pkey_ec_derive,
320
321 .ctrl = pkey_ec_ctrl,
322 .ctrl_str = pkey_ec_ctrl_str
323};
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