502 lines
16 KiB
C
502 lines
16 KiB
C
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/*
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
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* 2006.
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*/
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/* ====================================================================
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* Copyright (c) 2006-2018 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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#ifndef OPENSSL_NO_ENGINE
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# include <openssl/engine.h>
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#endif
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#include "asn1_locl.h"
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extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];
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extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
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extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
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/* Keep this sorted in type order !! */
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static const EVP_PKEY_ASN1_METHOD *standard_methods[] = {
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#ifndef OPENSSL_NO_RSA
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&rsa_asn1_meths[0],
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&rsa_asn1_meths[1],
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#endif
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#ifndef OPENSSL_NO_DH
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&dh_asn1_meth,
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#endif
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#ifndef OPENSSL_NO_DSA
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&dsa_asn1_meths[0],
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&dsa_asn1_meths[1],
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&dsa_asn1_meths[2],
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&dsa_asn1_meths[3],
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&dsa_asn1_meths[4],
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#endif
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#ifndef OPENSSL_NO_EC
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&eckey_asn1_meth,
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#endif
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&hmac_asn1_meth,
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#ifndef OPENSSL_NO_CMAC
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&cmac_asn1_meth,
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#endif
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#ifndef OPENSSL_NO_DH
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&dhx_asn1_meth
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#endif
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};
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typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
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DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
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static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
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#ifdef TEST
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void main()
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{
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int i;
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for (i = 0;
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i < sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *); i++)
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fprintf(stderr, "Number %d id=%d (%s)\n", i,
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standard_methods[i]->pkey_id,
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OBJ_nid2sn(standard_methods[i]->pkey_id));
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}
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#endif
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DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
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const EVP_PKEY_ASN1_METHOD *, ameth);
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static int ameth_cmp(const EVP_PKEY_ASN1_METHOD *const *a,
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const EVP_PKEY_ASN1_METHOD *const *b)
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{
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return ((*a)->pkey_id - (*b)->pkey_id);
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}
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IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
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const EVP_PKEY_ASN1_METHOD *, ameth);
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int EVP_PKEY_asn1_get_count(void)
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{
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int num = sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *);
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if (app_methods)
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num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
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return num;
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}
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const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
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{
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int num = sizeof(standard_methods) / sizeof(EVP_PKEY_ASN1_METHOD *);
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if (idx < 0)
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return NULL;
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if (idx < num)
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return standard_methods[idx];
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idx -= num;
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return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
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}
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static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
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{
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EVP_PKEY_ASN1_METHOD tmp;
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const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
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tmp.pkey_id = type;
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if (app_methods) {
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int idx;
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idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
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if (idx >= 0)
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return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
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}
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ret = OBJ_bsearch_ameth(&t, standard_methods, sizeof(standard_methods)
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/ sizeof(EVP_PKEY_ASN1_METHOD *));
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if (!ret || !*ret)
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return NULL;
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return *ret;
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}
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/*
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* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
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* search through engines and set *pe to a functional reference to the engine
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* implementing 'type' or NULL if no engine implements it.
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*/
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const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
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{
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const EVP_PKEY_ASN1_METHOD *t;
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for (;;) {
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t = pkey_asn1_find(type);
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if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
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break;
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type = t->pkey_base_id;
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}
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if (pe) {
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#ifndef OPENSSL_NO_ENGINE
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ENGINE *e;
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/* type will contain the final unaliased type */
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e = ENGINE_get_pkey_asn1_meth_engine(type);
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if (e) {
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*pe = e;
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return ENGINE_get_pkey_asn1_meth(e, type);
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}
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#endif
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*pe = NULL;
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}
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return t;
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}
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const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
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const char *str, int len)
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{
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int i;
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const EVP_PKEY_ASN1_METHOD *ameth;
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if (len == -1)
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len = strlen(str);
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if (pe) {
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#ifndef OPENSSL_NO_ENGINE
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ENGINE *e;
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ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
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if (ameth) {
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/*
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* Convert structural into functional reference
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*/
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if (!ENGINE_init(e))
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ameth = NULL;
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ENGINE_free(e);
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*pe = e;
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return ameth;
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}
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#endif
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*pe = NULL;
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}
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for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
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ameth = EVP_PKEY_asn1_get0(i);
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if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
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continue;
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if (((int)strlen(ameth->pem_str) == len) &&
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!strncasecmp(ameth->pem_str, str, len))
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return ameth;
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}
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return NULL;
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}
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int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
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{
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/*
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* One of the following must be true:
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*
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* pem_str == NULL AND ASN1_PKEY_ALIAS is set
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* pem_str != NULL AND ASN1_PKEY_ALIAS is clear
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*
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* Anything else is an error and may lead to a corrupt ASN1 method table
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*/
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if (!((ameth->pem_str == NULL
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&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
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|| (ameth->pem_str != NULL
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&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
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return 0;
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}
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if (app_methods == NULL) {
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app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
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if (!app_methods)
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return 0;
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}
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if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
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return 0;
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sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
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return 1;
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}
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int EVP_PKEY_asn1_add_alias(int to, int from)
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{
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EVP_PKEY_ASN1_METHOD *ameth;
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ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
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if (!ameth)
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return 0;
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ameth->pkey_base_id = to;
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if (!EVP_PKEY_asn1_add0(ameth)) {
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EVP_PKEY_asn1_free(ameth);
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return 0;
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}
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return 1;
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}
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int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id,
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int *ppkey_flags, const char **pinfo,
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const char **ppem_str,
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const EVP_PKEY_ASN1_METHOD *ameth)
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{
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if (!ameth)
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return 0;
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if (ppkey_id)
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*ppkey_id = ameth->pkey_id;
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if (ppkey_base_id)
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*ppkey_base_id = ameth->pkey_base_id;
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if (ppkey_flags)
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*ppkey_flags = ameth->pkey_flags;
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if (pinfo)
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*pinfo = ameth->info;
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if (ppem_str)
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*ppem_str = ameth->pem_str;
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return 1;
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}
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const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
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{
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return pkey->ameth;
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}
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EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
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const char *pem_str, const char *info)
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{
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EVP_PKEY_ASN1_METHOD *ameth;
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ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD));
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if (!ameth)
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return NULL;
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memset(ameth, 0, sizeof(EVP_PKEY_ASN1_METHOD));
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ameth->pkey_id = id;
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ameth->pkey_base_id = id;
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ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;
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if (info) {
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ameth->info = BUF_strdup(info);
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if (!ameth->info)
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goto err;
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} else
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ameth->info = NULL;
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if (pem_str) {
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ameth->pem_str = BUF_strdup(pem_str);
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if (!ameth->pem_str)
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goto err;
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} else
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ameth->pem_str = NULL;
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ameth->pub_decode = 0;
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ameth->pub_encode = 0;
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ameth->pub_cmp = 0;
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ameth->pub_print = 0;
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ameth->priv_decode = 0;
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ameth->priv_encode = 0;
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ameth->priv_print = 0;
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ameth->old_priv_encode = 0;
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ameth->old_priv_decode = 0;
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ameth->item_verify = 0;
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ameth->item_sign = 0;
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ameth->pkey_size = 0;
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ameth->pkey_bits = 0;
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ameth->param_decode = 0;
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ameth->param_encode = 0;
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ameth->param_missing = 0;
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ameth->param_copy = 0;
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ameth->param_cmp = 0;
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ameth->param_print = 0;
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ameth->pkey_free = 0;
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ameth->pkey_ctrl = 0;
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return ameth;
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||
|
|
|
||
|
|
err:
|
||
|
|
|
||
|
|
EVP_PKEY_asn1_free(ameth);
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
|
||
|
|
const EVP_PKEY_ASN1_METHOD *src)
|
||
|
|
{
|
||
|
|
|
||
|
|
dst->pub_decode = src->pub_decode;
|
||
|
|
dst->pub_encode = src->pub_encode;
|
||
|
|
dst->pub_cmp = src->pub_cmp;
|
||
|
|
dst->pub_print = src->pub_print;
|
||
|
|
|
||
|
|
dst->priv_decode = src->priv_decode;
|
||
|
|
dst->priv_encode = src->priv_encode;
|
||
|
|
dst->priv_print = src->priv_print;
|
||
|
|
|
||
|
|
dst->old_priv_encode = src->old_priv_encode;
|
||
|
|
dst->old_priv_decode = src->old_priv_decode;
|
||
|
|
|
||
|
|
dst->pkey_size = src->pkey_size;
|
||
|
|
dst->pkey_bits = src->pkey_bits;
|
||
|
|
|
||
|
|
dst->param_decode = src->param_decode;
|
||
|
|
dst->param_encode = src->param_encode;
|
||
|
|
dst->param_missing = src->param_missing;
|
||
|
|
dst->param_copy = src->param_copy;
|
||
|
|
dst->param_cmp = src->param_cmp;
|
||
|
|
dst->param_print = src->param_print;
|
||
|
|
|
||
|
|
dst->pkey_free = src->pkey_free;
|
||
|
|
dst->pkey_ctrl = src->pkey_ctrl;
|
||
|
|
|
||
|
|
dst->item_sign = src->item_sign;
|
||
|
|
dst->item_verify = src->item_verify;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
|
||
|
|
{
|
||
|
|
if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
|
||
|
|
if (ameth->pem_str)
|
||
|
|
OPENSSL_free(ameth->pem_str);
|
||
|
|
if (ameth->info)
|
||
|
|
OPENSSL_free(ameth->info);
|
||
|
|
OPENSSL_free(ameth);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
int (*pub_decode) (EVP_PKEY *pk,
|
||
|
|
X509_PUBKEY *pub),
|
||
|
|
int (*pub_encode) (X509_PUBKEY *pub,
|
||
|
|
const EVP_PKEY *pk),
|
||
|
|
int (*pub_cmp) (const EVP_PKEY *a,
|
||
|
|
const EVP_PKEY *b),
|
||
|
|
int (*pub_print) (BIO *out,
|
||
|
|
const EVP_PKEY *pkey,
|
||
|
|
int indent, ASN1_PCTX *pctx),
|
||
|
|
int (*pkey_size) (const EVP_PKEY *pk),
|
||
|
|
int (*pkey_bits) (const EVP_PKEY *pk))
|
||
|
|
{
|
||
|
|
ameth->pub_decode = pub_decode;
|
||
|
|
ameth->pub_encode = pub_encode;
|
||
|
|
ameth->pub_cmp = pub_cmp;
|
||
|
|
ameth->pub_print = pub_print;
|
||
|
|
ameth->pkey_size = pkey_size;
|
||
|
|
ameth->pkey_bits = pkey_bits;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
int (*priv_decode) (EVP_PKEY *pk,
|
||
|
|
PKCS8_PRIV_KEY_INFO
|
||
|
|
*p8inf),
|
||
|
|
int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8,
|
||
|
|
const EVP_PKEY *pk),
|
||
|
|
int (*priv_print) (BIO *out,
|
||
|
|
const EVP_PKEY *pkey,
|
||
|
|
int indent,
|
||
|
|
ASN1_PCTX *pctx))
|
||
|
|
{
|
||
|
|
ameth->priv_decode = priv_decode;
|
||
|
|
ameth->priv_encode = priv_encode;
|
||
|
|
ameth->priv_print = priv_print;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
int (*param_decode) (EVP_PKEY *pkey,
|
||
|
|
const unsigned char **pder,
|
||
|
|
int derlen),
|
||
|
|
int (*param_encode) (const EVP_PKEY *pkey,
|
||
|
|
unsigned char **pder),
|
||
|
|
int (*param_missing) (const EVP_PKEY *pk),
|
||
|
|
int (*param_copy) (EVP_PKEY *to,
|
||
|
|
const EVP_PKEY *from),
|
||
|
|
int (*param_cmp) (const EVP_PKEY *a,
|
||
|
|
const EVP_PKEY *b),
|
||
|
|
int (*param_print) (BIO *out,
|
||
|
|
const EVP_PKEY *pkey,
|
||
|
|
int indent, ASN1_PCTX *pctx))
|
||
|
|
{
|
||
|
|
ameth->param_decode = param_decode;
|
||
|
|
ameth->param_encode = param_encode;
|
||
|
|
ameth->param_missing = param_missing;
|
||
|
|
ameth->param_copy = param_copy;
|
||
|
|
ameth->param_cmp = param_cmp;
|
||
|
|
ameth->param_print = param_print;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
void (*pkey_free) (EVP_PKEY *pkey))
|
||
|
|
{
|
||
|
|
ameth->pkey_free = pkey_free;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
int (*pkey_ctrl) (EVP_PKEY *pkey, int op,
|
||
|
|
long arg1, void *arg2))
|
||
|
|
{
|
||
|
|
ameth->pkey_ctrl = pkey_ctrl;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
|
||
|
|
int (*item_verify) (EVP_MD_CTX *ctx,
|
||
|
|
const ASN1_ITEM *it,
|
||
|
|
void *asn,
|
||
|
|
X509_ALGOR *a,
|
||
|
|
ASN1_BIT_STRING *sig,
|
||
|
|
EVP_PKEY *pkey),
|
||
|
|
int (*item_sign) (EVP_MD_CTX *ctx,
|
||
|
|
const ASN1_ITEM *it,
|
||
|
|
void *asn,
|
||
|
|
X509_ALGOR *alg1,
|
||
|
|
X509_ALGOR *alg2,
|
||
|
|
ASN1_BIT_STRING *sig))
|
||
|
|
{
|
||
|
|
ameth->item_sign = item_sign;
|
||
|
|
ameth->item_verify = item_verify;
|
||
|
|
}
|