1 /* crypto/asn1/d2i_pu.c */

     2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

     3  * All rights reserved.

     4  *

     5  * This package is an SSL implementation written

     6  * by Eric Young (eay@cryptsoft.com).

     7  * The implementation was written so as to conform with Netscapes SSL.

     8  * 

     9  * This library is free for commercial and non-commercial use as long as

    10  * the following conditions are aheared to.  The following conditions

    11  * apply to all code found in this distribution, be it the RC4, RSA,

    12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

    13  * included with this distribution is covered by the same copyright terms

    14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

    15  * 

    16  * Copyright remains Eric Young's, and as such any Copyright notices in

    17  * the code are not to be removed.

    18  * If this package is used in a product, Eric Young should be given attribution

    19  * as the author of the parts of the library used.

    20  * This can be in the form of a textual message at program startup or

    21  * in documentation (online or textual) provided with the package.

    22  * 

    23  * Redistribution and use in source and binary forms, with or without

    24  * modification, are permitted provided that the following conditions

    25  * are met:

    26  * 1. Redistributions of source code must retain the copyright

    27  *    notice, this list of conditions and the following disclaimer.

    28  * 2. Redistributions in binary form must reproduce the above copyright

    29  *    notice, this list of conditions and the following disclaimer in the

    30  *    documentation and/or other materials provided with the distribution.

    31  * 3. All advertising materials mentioning features or use of this software

    32  *    must display the following acknowledgement:

    33  *    "This product includes cryptographic software written by

    34  *     Eric Young (eay@cryptsoft.com)"

    35  *    The word 'cryptographic' can be left out if the rouines from the library

    36  *    being used are not cryptographic related :-).

    37  * 4. If you include any Windows specific code (or a derivative thereof) from 

    38  *    the apps directory (application code) you must include an acknowledgement:

    39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

    40  * 

    41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

    42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

    45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

    46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

    47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

    49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

    50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

    51  * SUCH DAMAGE.

    52  * 

    53  * The licence and distribution terms for any publically available version or

    54  * derivative of this code cannot be changed.  i.e. this code cannot simply be

    55  * copied and put under another distribution licence

    56  * [including the GNU Public Licence.]

    57  */

    58 

    59 #include <stdio.h>

    60 #include "cryptlib.h"

    61 #include <openssl/bn.h>

    62 #include <openssl/evp.h>

    63 #include <openssl/objects.h>

    64 #include <openssl/asn1.h>

    65 #ifndef OPENSSL_NO_RSA

    66 #include <openssl/rsa.h>

    67 #endif

    68 #ifndef OPENSSL_NO_DSA

    69 #include <openssl/dsa.h>

    70 #endif

    71 #ifndef OPENSSL_NO_EC

    72 #include <openssl/ec.h>

    73 #endif

    74 

    75 EXPORT_C EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,

    76 	     long length)

    77 	{

    78 	EVP_PKEY *ret;

    79 

    80 	if ((a == NULL) || (*a == NULL))

    81 		{

    82 		if ((ret=EVP_PKEY_new()) == NULL)

    83 			{

    84 			ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_EVP_LIB);

    85 			return(NULL);

    86 			}

    87 		}

    88 	else	ret= *a;

    89 

    90 	ret->save_type=type;

    91 	ret->type=EVP_PKEY_type(type);

    92 	switch (ret->type)

    93 		{

    94 #ifndef OPENSSL_NO_RSA

    95 	case EVP_PKEY_RSA:

    96 		if ((ret->pkey.rsa=d2i_RSAPublicKey(NULL,

    97 			(const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */

    98 			{

    99 			ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);

   100 			goto err;

   101 			}

   102 		break;

   103 #endif

   104 #ifndef OPENSSL_NO_DSA

   105 	case EVP_PKEY_DSA:

   106 		if (!d2i_DSAPublicKey(&(ret->pkey.dsa),

   107 			(const unsigned char **)pp,length)) /* TMP UGLY CAST */

   108 			{

   109 			ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);

   110 			goto err;

   111 			}

   112 		break;

   113 #endif

   114 #ifndef OPENSSL_NO_EC

   115 	case EVP_PKEY_EC:

   116 		if (!o2i_ECPublicKey(&(ret->pkey.ec),

   117 				     (const unsigned char **)pp, length))

   118 			{

   119 			ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);

   120 			goto err;

   121 			}

   122 	break;

   123 #endif

   124 	default:

   125 		ASN1err(ASN1_F_D2I_PUBLICKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);

   126 		goto err;

   127 		/* break; */

   128 		}

   129 	if (a != NULL) (*a)=ret;

   130 	return(ret);

   131 err:

   132 	if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret);

   133 	return(NULL);

   134 	}

   135