d2i_pu.c revision 296465
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 75EVP_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 if ((ret = EVP_PKEY_new()) == NULL) { 82 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_EVP_LIB); 83 return (NULL); 84 } 85 } else 86 ret = *a; 87 88 ret->save_type = type; 89 ret->type = EVP_PKEY_type(type); 90 switch (ret->type) { 91#ifndef OPENSSL_NO_RSA 92 case EVP_PKEY_RSA: 93 /* TMP UGLY CAST */ 94 if ((ret->pkey.rsa = d2i_RSAPublicKey(NULL, 95 (const unsigned char **)pp, 96 length)) == NULL) { 97 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB); 98 goto err; 99 } 100 break; 101#endif 102#ifndef OPENSSL_NO_DSA 103 case EVP_PKEY_DSA: 104 /* TMP UGLY CAST */ 105 if (!d2i_DSAPublicKey(&(ret->pkey.dsa), 106 (const unsigned char **)pp, length)) { 107 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB); 108 goto err; 109 } 110 break; 111#endif 112#ifndef OPENSSL_NO_EC 113 case EVP_PKEY_EC: 114 if (!o2i_ECPublicKey(&(ret->pkey.ec), 115 (const unsigned char **)pp, length)) { 116 ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB); 117 goto err; 118 } 119 break; 120#endif 121 default: 122 ASN1err(ASN1_F_D2I_PUBLICKEY, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE); 123 goto err; 124 /* break; */ 125 } 126 if (a != NULL) 127 (*a) = ret; 128 return (ret); 129 err: 130 if ((ret != NULL) && ((a == NULL) || (*a != ret))) 131 EVP_PKEY_free(ret); 132 return (NULL); 133} 134