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dh_ameth.c

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1/* $OpenBSD: dh_ameth.c,v 1.17 2018/08/24 20:22:15 tb 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-
61#include <openssl/asn1.h>-
62#include <openssl/bn.h>-
63#include <openssl/dh.h>-
64#include <openssl/err.h>-
65#include <openssl/x509.h>-
66-
67#include "asn1_locl.h"-
68-
69static void-
70int_dh_free(EVP_PKEY *pkey)-
71{-
72 DH_free(pkey->pkey.dh);-
73}
never executed: end of block
0
74-
75static int-
76dh_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)-
77{-
78 const unsigned char *p, *pm;-
79 int pklen, pmlen;-
80 int ptype;-
81 const void *pval;-
82 const ASN1_STRING *pstr;-
83 X509_ALGOR *palg;-
84 ASN1_INTEGER *public_key = NULL;-
85 DH *dh = NULL;-
86-
87 if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey))
!X509_PUBKEY_g...&palg, pubkey)Description
TRUEnever evaluated
FALSEnever evaluated
0
88 return 0;
never executed: return 0;
0
89 X509_ALGOR_get0(NULL, &ptype, &pval, palg);-
90-
91 if (ptype != V_ASN1_SEQUENCE) {
ptype != 16Description
TRUEnever evaluated
FALSEnever evaluated
0
92 DHerror(DH_R_PARAMETER_ENCODING_ERROR);-
93 goto err;
never executed: goto err;
0
94 }-
95-
96 pstr = pval; -
97 pm = pstr->data;-
98 pmlen = pstr->length;-
99-
100 if (!(dh = d2i_DHparams(NULL, &pm, pmlen))) {
!(dh = d2i_DHp..., &pm, pmlen))Description
TRUEnever evaluated
FALSEnever evaluated
0
101 DHerror(DH_R_DECODE_ERROR);-
102 goto err;
never executed: goto err;
0
103 }-
104-
105 if (!(public_key=d2i_ASN1_INTEGER(NULL, &p, pklen))) {
!(public_key=d... , &p, pklen))Description
TRUEnever evaluated
FALSEnever evaluated
0
106 DHerror(DH_R_DECODE_ERROR);-
107 goto err;
never executed: goto err;
0
108 }-
109-
110 /* We have parameters now set public key */-
111 if (!(dh->pub_key = ASN1_INTEGER_to_BN(public_key, NULL))) {
!(dh->pub_key ...((void *)0) ))Description
TRUEnever evaluated
FALSEnever evaluated
0
112 DHerror(DH_R_BN_DECODE_ERROR);-
113 goto err;
never executed: goto err;
0
114 }-
115-
116 ASN1_INTEGER_free(public_key);-
117 EVP_PKEY_assign_DH(pkey, dh);-
118 return 1;
never executed: return 1;
0
119-
120err:-
121 if (public_key)
public_keyDescription
TRUEnever evaluated
FALSEnever evaluated
0
122 ASN1_INTEGER_free(public_key);
never executed: ASN1_INTEGER_free(public_key);
0
123 DH_free(dh);-
124 return 0;
never executed: return 0;
0
125}-
126-
127static int-
128dh_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)-
129{-
130 DH *dh;-
131 int ptype;-
132 unsigned char *penc = NULL;-
133 int penclen;-
134 ASN1_STRING *str;-
135 ASN1_INTEGER *pub_key = NULL;-
136-
137 dh=pkey->pkey.dh;-
138-
139 str = ASN1_STRING_new();-
140 if (str == NULL) {
str == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
141 DHerror(ERR_R_MALLOC_FAILURE);-
142 goto err;
never executed: goto err;
0
143 }-
144-
145 str->length = i2d_DHparams(dh, &str->data);-
146 if (str->length <= 0) {
str->length <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
147 DHerror(ERR_R_MALLOC_FAILURE);-
148 goto err;
never executed: goto err;
0
149 }-
150 ptype = V_ASN1_SEQUENCE;-
151-
152 pub_key = BN_to_ASN1_INTEGER(dh->pub_key, NULL);-
153 if (!pub_key)
!pub_keyDescription
TRUEnever evaluated
FALSEnever evaluated
0
154 goto err;
never executed: goto err;
0
155-
156 penclen = i2d_ASN1_INTEGER(pub_key, &penc);-
157-
158 ASN1_INTEGER_free(pub_key);-
159-
160 if (penclen <= 0) {
penclen <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
161 DHerror(ERR_R_MALLOC_FAILURE);-
162 goto err;
never executed: goto err;
0
163 }-
164-
165 if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_DH), ptype,
X509_PUBKEY_se...penc, penclen)Description
TRUEnever evaluated
FALSEnever evaluated
0
166 (void *)str, penc, penclen))
X509_PUBKEY_se...penc, penclen)Description
TRUEnever evaluated
FALSEnever evaluated
0
167 return 1;
never executed: return 1;
0
168-
169err:
code before this statement never executed: err:
0
170 free(penc);-
171 ASN1_STRING_free(str);-
172-
173 return 0;
never executed: return 0;
0
174}-
175-
176/*-
177 * PKCS#8 DH is defined in PKCS#11 of all places. It is similar to DH in-
178 * that the AlgorithmIdentifier contains the paramaters, the private key-
179 * is explcitly included and the pubkey must be recalculated.-
180 */-
181 -
182static int-
183dh_priv_decode(EVP_PKEY *pkey, const PKCS8_PRIV_KEY_INFO *p8)-
184{-
185 const unsigned char *p, *pm;-
186 int pklen, pmlen;-
187 int ptype;-
188 const void *pval;-
189 const ASN1_STRING *pstr;-
190 const X509_ALGOR *palg;-
191 ASN1_INTEGER *privkey = NULL;-
192 DH *dh = NULL;-
193-
194 if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8))
!PKCS8_pkey_ge...en, &palg, p8)Description
TRUEnever evaluated
FALSEnever evaluated
0
195 return 0;
never executed: return 0;
0
196-
197 X509_ALGOR_get0(NULL, &ptype, &pval, palg);-
198-
199 if (ptype != V_ASN1_SEQUENCE)
ptype != 16Description
TRUEnever evaluated
FALSEnever evaluated
0
200 goto decerr;
never executed: goto decerr;
0
201-
202 if (!(privkey=d2i_ASN1_INTEGER(NULL, &p, pklen)))
!(privkey=d2i_... , &p, pklen))Description
TRUEnever evaluated
FALSEnever evaluated
0
203 goto decerr;
never executed: goto decerr;
0
204-
205 pstr = pval; -
206 pm = pstr->data;-
207 pmlen = pstr->length;-
208 if (!(dh = d2i_DHparams(NULL, &pm, pmlen)))
!(dh = d2i_DHp..., &pm, pmlen))Description
TRUEnever evaluated
FALSEnever evaluated
0
209 goto decerr;
never executed: goto decerr;
0
210 /* We have parameters now set private key */-
211 if (!(dh->priv_key = ASN1_INTEGER_to_BN(privkey, NULL))) {
!(dh->priv_key...((void *)0) ))Description
TRUEnever evaluated
FALSEnever evaluated
0
212 DHerror(DH_R_BN_ERROR);-
213 goto dherr;
never executed: goto dherr;
0
214 }-
215 /* Calculate public key */-
216 if (!DH_generate_key(dh))
!DH_generate_key(dh)Description
TRUEnever evaluated
FALSEnever evaluated
0
217 goto dherr;
never executed: goto dherr;
0
218-
219 EVP_PKEY_assign_DH(pkey, dh);-
220-
221 ASN1_INTEGER_free(privkey);-
222-
223 return 1;
never executed: return 1;
0
224-
225decerr:-
226 DHerror(EVP_R_DECODE_ERROR);-
227dherr:
code before this statement never executed: dherr:
0
228 DH_free(dh);-
229 return 0;
never executed: return 0;
0
230}-
231-
232static int-
233dh_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)-
234{-
235 ASN1_STRING *params = NULL;-
236 ASN1_INTEGER *prkey = NULL;-
237 unsigned char *dp = NULL;-
238 int dplen;-
239-
240 params = ASN1_STRING_new();-
241-
242 if (!params) {
!paramsDescription
TRUEnever evaluated
FALSEnever evaluated
0
243 DHerror(ERR_R_MALLOC_FAILURE);-
244 goto err;
never executed: goto err;
0
245 }-
246-
247 params->length = i2d_DHparams(pkey->pkey.dh, &params->data);-
248 if (params->length <= 0) {
params->length <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
249 DHerror(ERR_R_MALLOC_FAILURE);-
250 goto err;
never executed: goto err;
0
251 }-
252 params->type = V_ASN1_SEQUENCE;-
253-
254 /* Get private key into integer */-
255 prkey = BN_to_ASN1_INTEGER(pkey->pkey.dh->priv_key, NULL);-
256-
257 if (!prkey) {
!prkeyDescription
TRUEnever evaluated
FALSEnever evaluated
0
258 DHerror(DH_R_BN_ERROR);-
259 goto err;
never executed: goto err;
0
260 }-
261-
262 dplen = i2d_ASN1_INTEGER(prkey, &dp);-
263-
264 ASN1_INTEGER_free(prkey);-
265 prkey = NULL;-
266-
267 if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dhKeyAgreement), 0,
!PKCS8_pkey_se...ms, dp, dplen)Description
TRUEnever evaluated
FALSEnever evaluated
0
268 V_ASN1_SEQUENCE, params, dp, dplen))
!PKCS8_pkey_se...ms, dp, dplen)Description
TRUEnever evaluated
FALSEnever evaluated
0
269 goto err;
never executed: goto err;
0
270-
271 return 1;
never executed: return 1;
0
272-
273err:-
274 free(dp);-
275 ASN1_STRING_free(params);-
276 ASN1_INTEGER_free(prkey);-
277 return 0;
never executed: return 0;
0
278}-
279-
280static void-
281update_buflen(const BIGNUM *b, size_t *pbuflen)-
282{-
283 size_t i;-
284-
285 if (!b)
!bDescription
TRUEnever evaluated
FALSEnever evaluated
0
286 return;
never executed: return;
0
287 if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
*pbuflen < (i ...bits(b)+7)/8))Description
TRUEnever evaluated
FALSEnever evaluated
0
288 *pbuflen = i;
never executed: *pbuflen = i;
0
289}
never executed: end of block
0
290-
291static int-
292dh_param_decode(EVP_PKEY *pkey, const unsigned char **pder, int derlen)-
293{-
294 DH *dh;-
295-
296 if (!(dh = d2i_DHparams(NULL, pder, derlen))) {
!(dh = d2i_DHp...pder, derlen))Description
TRUEnever evaluated
FALSEnever evaluated
0
297 DHerror(ERR_R_DH_LIB);-
298 return 0;
never executed: return 0;
0
299 }-
300 EVP_PKEY_assign_DH(pkey, dh);-
301 return 1;
never executed: return 1;
0
302}-
303-
304static int-
305dh_param_encode(const EVP_PKEY *pkey, unsigned char **pder)-
306{-
307 return i2d_DHparams(pkey->pkey.dh, pder);
never executed: return i2d_DHparams(pkey->pkey.dh, pder);
0
308}-
309-
310static int-
311do_dh_print(BIO *bp, const DH *x, int indent, ASN1_PCTX *ctx, int ptype)-
312{-
313 unsigned char *m = NULL;-
314 int reason = ERR_R_BUF_LIB, ret = 0;-
315 size_t buf_len = 0;-
316 const char *ktype = NULL;-
317 BIGNUM *priv_key, *pub_key;-
318-
319 if (ptype == 2)
ptype == 2Description
TRUEnever evaluated
FALSEnever evaluated
0
320 priv_key = x->priv_key;
never executed: priv_key = x->priv_key;
0
321 else-
322 priv_key = NULL;
never executed: priv_key = ((void *)0) ;
0
323-
324 if (ptype > 0)
ptype > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
325 pub_key = x->pub_key;
never executed: pub_key = x->pub_key;
0
326 else-
327 pub_key = NULL;
never executed: pub_key = ((void *)0) ;
0
328-
329 update_buflen(x->p, &buf_len);-
330-
331 if (buf_len == 0) {
buf_len == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
332 reason = ERR_R_PASSED_NULL_PARAMETER;-
333 goto err;
never executed: goto err;
0
334 }-
335-
336 update_buflen(x->g, &buf_len);-
337 update_buflen(pub_key, &buf_len);-
338 update_buflen(priv_key, &buf_len);-
339-
340 if (ptype == 2)
ptype == 2Description
TRUEnever evaluated
FALSEnever evaluated
0
341 ktype = "PKCS#3 DH Private-Key";
never executed: ktype = "PKCS#3 DH Private-Key";
0
342 else if (ptype == 1)
ptype == 1Description
TRUEnever evaluated
FALSEnever evaluated
0
343 ktype = "PKCS#3 DH Public-Key";
never executed: ktype = "PKCS#3 DH Public-Key";
0
344 else-
345 ktype = "PKCS#3 DH Parameters";
never executed: ktype = "PKCS#3 DH Parameters";
0
346-
347 m= malloc(buf_len + 10);-
348 if (m == NULL) {
m == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
349 reason = ERR_R_MALLOC_FAILURE;-
350 goto err;
never executed: goto err;
0
351 }-
352-
353 BIO_indent(bp, indent, 128);-
354 if (BIO_printf(bp, "%s: (%d bit)\n", ktype, BN_num_bits(x->p)) <= 0)
BIO_printf(bp,...ts(x->p)) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
355 goto err;
never executed: goto err;
0
356 indent += 4;-
357-
358 if (!ASN1_bn_print(bp, "private-key:", priv_key, m, indent))
!ASN1_bn_print...ey, m, indent)Description
TRUEnever evaluated
FALSEnever evaluated
0
359 goto err;
never executed: goto err;
0
360 if (!ASN1_bn_print(bp, "public-key:", pub_key, m, indent))
!ASN1_bn_print...ey, m, indent)Description
TRUEnever evaluated
FALSEnever evaluated
0
361 goto err;
never executed: goto err;
0
362-
363 if (!ASN1_bn_print(bp, "prime:", x->p, m, indent))
!ASN1_bn_print...>p, m, indent)Description
TRUEnever evaluated
FALSEnever evaluated
0
364 goto err;
never executed: goto err;
0
365 if (!ASN1_bn_print(bp, "generator:", x->g, m, indent))
!ASN1_bn_print...>g, m, indent)Description
TRUEnever evaluated
FALSEnever evaluated
0
366 goto err;
never executed: goto err;
0
367 if (x->length != 0) {
x->length != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
368 BIO_indent(bp, indent, 128);-
369 if (BIO_printf(bp, "recommended-private-length: %d bits\n",
BIO_printf(bp,...->length) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
370 (int)x->length) <= 0)
BIO_printf(bp,...->length) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
371 goto err;
never executed: goto err;
0
372 }
never executed: end of block
0
373-
374 ret = 1;-
375 if (0) {-
376err:-
377 DHerror(reason);-
378 }
never executed: end of block
0
379 free(m);-
380 return(ret);
never executed: return(ret);
0
381}-
382-
383static int-
384int_dh_size(const EVP_PKEY *pkey)-
385{-
386 return DH_size(pkey->pkey.dh);
never executed: return DH_size(pkey->pkey.dh);
0
387}-
388-
389static int-
390dh_bits(const EVP_PKEY *pkey)-
391{-
392 return BN_num_bits(pkey->pkey.dh->p);
never executed: return BN_num_bits(pkey->pkey.dh->p);
0
393}-
394-
395static int-
396dh_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)-
397{-
398 if (BN_cmp(a->pkey.dh->p, b->pkey.dh->p) ||
BN_cmp(a->pkey...b->pkey.dh->p)Description
TRUEnever evaluated
FALSEnever evaluated
0
399 BN_cmp(a->pkey.dh->g, b->pkey.dh->g))
BN_cmp(a->pkey...b->pkey.dh->g)Description
TRUEnever evaluated
FALSEnever evaluated
0
400 return 0;
never executed: return 0;
0
401 else-
402 return 1;
never executed: return 1;
0
403}-
404-
405static int-
406dh_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)-
407{-
408 BIGNUM *a;-
409-
410 if ((a = BN_dup(from->pkey.dh->p)) == NULL)
(a = BN_dup(fr...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
411 return 0;
never executed: return 0;
0
412 BN_free(to->pkey.dh->p);-
413 to->pkey.dh->p = a;-
414-
415 if ((a = BN_dup(from->pkey.dh->g)) == NULL)
(a = BN_dup(fr...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
416 return 0;
never executed: return 0;
0
417 BN_free(to->pkey.dh->g);-
418 to->pkey.dh->g = a;-
419-
420 return 1;
never executed: return 1;
0
421}-
422-
423static int-
424dh_missing_parameters(const EVP_PKEY *a)-
425{-
426 if (!a->pkey.dh->p || !a->pkey.dh->g)
!a->pkey.dh->pDescription
TRUEnever evaluated
FALSEnever evaluated
!a->pkey.dh->gDescription
TRUEnever evaluated
FALSEnever evaluated
0
427 return 1;
never executed: return 1;
0
428 return 0;
never executed: return 0;
0
429}-
430-
431static int-
432dh_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)-
433{-
434 if (dh_cmp_parameters(a, b) == 0)
dh_cmp_parameters(a, b) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
435 return 0;
never executed: return 0;
0
436 if (BN_cmp(b->pkey.dh->pub_key, a->pkey.dh->pub_key) != 0)
BN_cmp(b->pkey...>pub_key) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
437 return 0;
never executed: return 0;
0
438 else-
439 return 1;
never executed: return 1;
0
440}-
441-
442static int-
443dh_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)-
444{-
445 return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 0);
never executed: return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 0);
0
446}-
447-
448static int-
449dh_public_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)-
450{-
451 return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 1);
never executed: return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 1);
0
452}-
453-
454static int-
455dh_private_print(BIO *bp, const EVP_PKEY *pkey, int indent, ASN1_PCTX *ctx)-
456{-
457 return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 2);
never executed: return do_dh_print(bp, pkey->pkey.dh, indent, ctx, 2);
0
458}-
459-
460int-
461DHparams_print(BIO *bp, const DH *x)-
462{-
463 return do_dh_print(bp, x, 4, NULL, 0);
never executed: return do_dh_print(bp, x, 4, ((void *)0) , 0);
0
464}-
465-
466const EVP_PKEY_ASN1_METHOD dh_asn1_meth = {-
467 .pkey_id = EVP_PKEY_DH,-
468 .pkey_base_id = EVP_PKEY_DH,-
469-
470 .pem_str = "DH",-
471 .info = "OpenSSL PKCS#3 DH method",-
472-
473 .pub_decode = dh_pub_decode,-
474 .pub_encode = dh_pub_encode,-
475 .pub_cmp = dh_pub_cmp,-
476 .pub_print = dh_public_print,-
477-
478 .priv_decode = dh_priv_decode,-
479 .priv_encode = dh_priv_encode,-
480 .priv_print = dh_private_print,-
481-
482 .pkey_size = int_dh_size,-
483 .pkey_bits = dh_bits,-
484-
485 .param_decode = dh_param_decode,-
486 .param_encode = dh_param_encode,-
487 .param_missing = dh_missing_parameters,-
488 .param_copy = dh_copy_parameters,-
489 .param_cmp = dh_cmp_parameters,-
490 .param_print = dh_param_print,-
491-
492 .pkey_free = int_dh_free,-
493};-
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