pineapple/externals/libressl/crypto/asn1/a_pubkey.c

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2022-04-24 22:29:35 +02:00
/* $OpenBSD: a_pubkey.c,v 1.3 2021/12/25 13:17:48 jsing Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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 acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <openssl/opensslconf.h>
#include <openssl/asn1.h>
#include <openssl/bn.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_EC
#include <openssl/ec.h>
#endif
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#include "evp_locl.h"
EVP_PKEY *
d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp, long length)
{
EVP_PKEY *ret;
if ((a == NULL) || (*a == NULL)) {
if ((ret = EVP_PKEY_new()) == NULL) {
ASN1error(ERR_R_EVP_LIB);
return (NULL);
}
} else
ret = *a;
if (!EVP_PKEY_set_type(ret, type)) {
ASN1error(ERR_R_EVP_LIB);
goto err;
}
switch (EVP_PKEY_id(ret)) {
#ifndef OPENSSL_NO_RSA
case EVP_PKEY_RSA:
if ((ret->pkey.rsa = d2i_RSAPublicKey(NULL, pp, length)) ==
NULL) {
ASN1error(ERR_R_ASN1_LIB);
goto err;
}
break;
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
if (!d2i_DSAPublicKey(&(ret->pkey.dsa), pp, length)) {
ASN1error(ERR_R_ASN1_LIB);
goto err;
}
break;
#endif
#ifndef OPENSSL_NO_EC
case EVP_PKEY_EC:
if (!o2i_ECPublicKey(&(ret->pkey.ec), pp, length)) {
ASN1error(ERR_R_ASN1_LIB);
goto err;
}
break;
#endif
default:
ASN1error(ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
goto err;
/* break; */
}
if (a != NULL)
(*a) = ret;
return (ret);
err:
if (a == NULL || *a != ret)
EVP_PKEY_free(ret);
return (NULL);
}
int
i2d_PublicKey(EVP_PKEY *a, unsigned char **pp)
{
switch (a->type) {
#ifndef OPENSSL_NO_RSA
case EVP_PKEY_RSA:
return (i2d_RSAPublicKey(a->pkey.rsa, pp));
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
return (i2d_DSAPublicKey(a->pkey.dsa, pp));
#endif
#ifndef OPENSSL_NO_EC
case EVP_PKEY_EC:
return (i2o_ECPublicKey(a->pkey.ec, pp));
#endif
default:
ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
return (-1);
}
}