1/* $OpenBSD: a_pubkey.c,v 1.7 2024/04/09 13:52:41 beck Exp $ */ 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 61#include <openssl/opensslconf.h> 62 63#include <openssl/asn1.h> 64#include <openssl/bn.h> 65#include <openssl/err.h> 66#include <openssl/evp.h> 67#include <openssl/objects.h> 68 69#ifndef OPENSSL_NO_DSA 70#include <openssl/dsa.h> 71#endif 72#ifndef OPENSSL_NO_EC 73#include <openssl/ec.h> 74#endif 75#ifndef OPENSSL_NO_RSA 76#include <openssl/rsa.h> 77#endif 78 79#include "evp_local.h" 80 81EVP_PKEY * 82d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp, long length) 83{ 84 EVP_PKEY *ret; 85 86 if ((a == NULL) || (*a == NULL)) { 87 if ((ret = EVP_PKEY_new()) == NULL) { 88 ASN1error(ERR_R_EVP_LIB); 89 return (NULL); 90 } 91 } else 92 ret = *a; 93 94 if (!EVP_PKEY_set_type(ret, type)) { 95 ASN1error(ERR_R_EVP_LIB); 96 goto err; 97 } 98 99 switch (EVP_PKEY_id(ret)) { 100#ifndef OPENSSL_NO_RSA 101 case EVP_PKEY_RSA: 102 if ((ret->pkey.rsa = d2i_RSAPublicKey(NULL, pp, length)) == 103 NULL) { 104 ASN1error(ERR_R_ASN1_LIB); 105 goto err; 106 } 107 break; 108#endif 109#ifndef OPENSSL_NO_DSA 110 case EVP_PKEY_DSA: 111 if (!d2i_DSAPublicKey(&(ret->pkey.dsa), pp, length)) { 112 ASN1error(ERR_R_ASN1_LIB); 113 goto err; 114 } 115 break; 116#endif 117#ifndef OPENSSL_NO_EC 118 case EVP_PKEY_EC: 119 if (!o2i_ECPublicKey(&(ret->pkey.ec), pp, length)) { 120 ASN1error(ERR_R_ASN1_LIB); 121 goto err; 122 } 123 break; 124#endif 125 default: 126 ASN1error(ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE); 127 goto err; 128 /* break; */ 129 } 130 if (a != NULL) 131 (*a) = ret; 132 return (ret); 133 134 err: 135 if (a == NULL || *a != ret) 136 EVP_PKEY_free(ret); 137 return (NULL); 138} 139LCRYPTO_ALIAS(d2i_PublicKey); 140 141int 142i2d_PublicKey(EVP_PKEY *a, unsigned char **pp) 143{ 144 switch (a->type) { 145#ifndef OPENSSL_NO_RSA 146 case EVP_PKEY_RSA: 147 return (i2d_RSAPublicKey(a->pkey.rsa, pp)); 148#endif 149#ifndef OPENSSL_NO_DSA 150 case EVP_PKEY_DSA: 151 return (i2d_DSAPublicKey(a->pkey.dsa, pp)); 152#endif 153#ifndef OPENSSL_NO_EC 154 case EVP_PKEY_EC: 155 return (i2o_ECPublicKey(a->pkey.ec, pp)); 156#endif 157 default: 158 ASN1error(ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE); 159 return (-1); 160 } 161} 162LCRYPTO_ALIAS(i2d_PublicKey); 163