1 /* $OpenBSD: evp_pkey.c,v 1.32 2024/08/31 10:25:38 tb Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 1999. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stdio.h> 60 #include <stdlib.h> 61 62 #include <openssl/err.h> 63 #include <openssl/x509.h> 64 65 #include "asn1_local.h" 66 #include "evp_local.h" 67 68 /* Extract a private key from a PKCS8 structure */ 69 70 EVP_PKEY * 71 EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8) 72 { 73 EVP_PKEY *pkey = NULL; 74 const ASN1_OBJECT *algoid; 75 char obj_tmp[80]; 76 77 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8)) 78 return NULL; 79 80 if (!(pkey = EVP_PKEY_new())) { 81 EVPerror(ERR_R_MALLOC_FAILURE); 82 return NULL; 83 } 84 85 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) { 86 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 87 i2t_ASN1_OBJECT(obj_tmp, 80, algoid); 88 ERR_asprintf_error_data("TYPE=%s", obj_tmp); 89 goto error; 90 } 91 92 if (pkey->ameth->priv_decode) { 93 if (!pkey->ameth->priv_decode(pkey, p8)) { 94 EVPerror(EVP_R_PRIVATE_KEY_DECODE_ERROR); 95 goto error; 96 } 97 } else { 98 EVPerror(EVP_R_METHOD_NOT_SUPPORTED); 99 goto error; 100 } 101 102 return pkey; 103 104 error: 105 EVP_PKEY_free(pkey); 106 return NULL; 107 } 108 LCRYPTO_ALIAS(EVP_PKCS82PKEY); 109 110 /* Turn a private key into a PKCS8 structure */ 111 112 PKCS8_PRIV_KEY_INFO * 113 EVP_PKEY2PKCS8(EVP_PKEY *pkey) 114 { 115 PKCS8_PRIV_KEY_INFO *p8; 116 117 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) { 118 EVPerror(ERR_R_MALLOC_FAILURE); 119 return NULL; 120 } 121 122 if (pkey->ameth) { 123 if (pkey->ameth->priv_encode) { 124 if (!pkey->ameth->priv_encode(p8, pkey)) { 125 EVPerror(EVP_R_PRIVATE_KEY_ENCODE_ERROR); 126 goto error; 127 } 128 } else { 129 EVPerror(EVP_R_METHOD_NOT_SUPPORTED); 130 goto error; 131 } 132 } else { 133 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 134 goto error; 135 } 136 return p8; 137 138 error: 139 PKCS8_PRIV_KEY_INFO_free(p8); 140 return NULL; 141 } 142 LCRYPTO_ALIAS(EVP_PKEY2PKCS8); 143