1 /* $OpenBSD: evp_pkey.c,v 1.23 2018/08/24 20:26:03 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_locl.h" 66 67 /* Extract a private key from a PKCS8 structure */ 68 69 EVP_PKEY * 70 EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8) 71 { 72 EVP_PKEY *pkey = NULL; 73 const ASN1_OBJECT *algoid; 74 char obj_tmp[80]; 75 76 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8)) 77 return NULL; 78 79 if (!(pkey = EVP_PKEY_new())) { 80 EVPerror(ERR_R_MALLOC_FAILURE); 81 return NULL; 82 } 83 84 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) { 85 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 86 i2t_ASN1_OBJECT(obj_tmp, 80, algoid); 87 ERR_asprintf_error_data("TYPE=%s", obj_tmp); 88 goto error; 89 } 90 91 if (pkey->ameth->priv_decode) { 92 if (!pkey->ameth->priv_decode(pkey, p8)) { 93 EVPerror(EVP_R_PRIVATE_KEY_DECODE_ERROR); 94 goto error; 95 } 96 } else { 97 EVPerror(EVP_R_METHOD_NOT_SUPPORTED); 98 goto error; 99 } 100 101 return pkey; 102 103 error: 104 EVP_PKEY_free(pkey); 105 return NULL; 106 } 107 108 /* Turn a private key into a PKCS8 structure */ 109 110 PKCS8_PRIV_KEY_INFO * 111 EVP_PKEY2PKCS8(EVP_PKEY *pkey) 112 { 113 PKCS8_PRIV_KEY_INFO *p8; 114 115 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) { 116 EVPerror(ERR_R_MALLOC_FAILURE); 117 return NULL; 118 } 119 120 if (pkey->ameth) { 121 if (pkey->ameth->priv_encode) { 122 if (!pkey->ameth->priv_encode(p8, pkey)) { 123 EVPerror(EVP_R_PRIVATE_KEY_ENCODE_ERROR); 124 goto error; 125 } 126 } else { 127 EVPerror(EVP_R_METHOD_NOT_SUPPORTED); 128 goto error; 129 } 130 } else { 131 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 132 goto error; 133 } 134 return p8; 135 136 error: 137 PKCS8_PRIV_KEY_INFO_free(p8); 138 return NULL; 139 } 140 141 /* EVP_PKEY attribute functions */ 142 143 int 144 EVP_PKEY_get_attr_count(const EVP_PKEY *key) 145 { 146 return X509at_get_attr_count(key->attributes); 147 } 148 149 int 150 EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos) 151 { 152 return X509at_get_attr_by_NID(key->attributes, nid, lastpos); 153 } 154 155 int 156 EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, const ASN1_OBJECT *obj, 157 int lastpos) 158 { 159 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos); 160 } 161 162 X509_ATTRIBUTE * 163 EVP_PKEY_get_attr(const EVP_PKEY *key, int loc) 164 { 165 return X509at_get_attr(key->attributes, loc); 166 } 167 168 X509_ATTRIBUTE * 169 EVP_PKEY_delete_attr(EVP_PKEY *key, int loc) 170 { 171 return X509at_delete_attr(key->attributes, loc); 172 } 173 174 int 175 EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr) 176 { 177 if (X509at_add1_attr(&key->attributes, attr)) 178 return 1; 179 return 0; 180 } 181 182 int 183 EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, const ASN1_OBJECT *obj, int type, 184 const unsigned char *bytes, int len) 185 { 186 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len)) 187 return 1; 188 return 0; 189 } 190 191 int 192 EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, int nid, int type, 193 const unsigned char *bytes, int len) 194 { 195 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len)) 196 return 1; 197 return 0; 198 } 199 200 int 201 EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, const char *attrname, int type, 202 const unsigned char *bytes, int len) 203 { 204 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, 205 bytes, len)) 206 return 1; 207 return 0; 208 } 209