pineapple-src/externals/libressl/crypto/dh/dh_asn1.c

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2020-12-28 15:15:37 +00:00
/* $OpenBSD: dh_asn1.c,v 1.10 2016/12/30 15:26:49 jsing Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <openssl/asn1t.h>
#include <openssl/bn.h>
#include <openssl/dh.h>
#include <openssl/objects.h>
/* Override the default free and new methods */
static int
dh_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
{
if (operation == ASN1_OP_NEW_PRE) {
*pval = (ASN1_VALUE *)DH_new();
if (*pval)
return 2;
return 0;
} else if (operation == ASN1_OP_FREE_PRE) {
DH_free((DH *)*pval);
*pval = NULL;
return 2;
}
return 1;
}
static const ASN1_AUX DHparams_aux = {
.app_data = NULL,
.flags = 0,
.ref_offset = 0,
.ref_lock = 0,
.asn1_cb = dh_cb,
.enc_offset = 0,
};
static const ASN1_TEMPLATE DHparams_seq_tt[] = {
{
.flags = 0,
.tag = 0,
.offset = offsetof(DH, p),
.field_name = "p",
.item = &BIGNUM_it,
},
{
.flags = 0,
.tag = 0,
.offset = offsetof(DH, g),
.field_name = "g",
.item = &BIGNUM_it,
},
{
.flags = ASN1_TFLG_OPTIONAL,
.tag = 0,
.offset = offsetof(DH, length),
.field_name = "length",
.item = &ZLONG_it,
},
};
const ASN1_ITEM DHparams_it = {
.itype = ASN1_ITYPE_SEQUENCE,
.utype = V_ASN1_SEQUENCE,
.templates = DHparams_seq_tt,
.tcount = sizeof(DHparams_seq_tt) / sizeof(ASN1_TEMPLATE),
.funcs = &DHparams_aux,
.size = sizeof(DH),
.sname = "DH",
};
DH *
d2i_DHparams(DH **a, const unsigned char **in, long len)
{
return (DH *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
&DHparams_it);
}
int
i2d_DHparams(const DH *a, unsigned char **out)
{
return ASN1_item_i2d((ASN1_VALUE *)a, out, &DHparams_it);
}
DH *
d2i_DHparams_bio(BIO *bp, DH **a)
{
return ASN1_item_d2i_bio(&DHparams_it, bp, a);
}
int
i2d_DHparams_bio(BIO *bp, DH *a)
{
return ASN1_item_i2d_bio(&DHparams_it, bp, a);
}
DH *
d2i_DHparams_fp(FILE *fp, DH **a)
{
return ASN1_item_d2i_fp(&DHparams_it, fp, a);
}
int
i2d_DHparams_fp(FILE *fp, DH *a)
{
return ASN1_item_i2d_fp(&DHparams_it, fp, a);
}
DH *
DHparams_dup(DH *dh)
{
return ASN1_item_dup(&DHparams_it, dh);
}