1 /* $OpenBSD: evp_pkey.c,v 1.19 2017/01/29 17:49:23 beck 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(PKCS8_PRIV_KEY_INFO *p8) 71 { 72 EVP_PKEY *pkey = NULL; 73 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 PKCS8_PRIV_KEY_INFO * 109 EVP_PKEY2PKCS8(EVP_PKEY *pkey) 110 { 111 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK); 112 } 113 114 /* Turn a private key into a PKCS8 structure */ 115 116 PKCS8_PRIV_KEY_INFO * 117 EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken) 118 { 119 PKCS8_PRIV_KEY_INFO *p8; 120 121 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) { 122 EVPerror(ERR_R_MALLOC_FAILURE); 123 return NULL; 124 } 125 p8->broken = broken; 126 127 if (pkey->ameth) { 128 if (pkey->ameth->priv_encode) { 129 if (!pkey->ameth->priv_encode(p8, pkey)) { 130 EVPerror(EVP_R_PRIVATE_KEY_ENCODE_ERROR); 131 goto error; 132 } 133 } else { 134 EVPerror(EVP_R_METHOD_NOT_SUPPORTED); 135 goto error; 136 } 137 } else { 138 EVPerror(EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 139 goto error; 140 } 141 return p8; 142 143 error: 144 PKCS8_PRIV_KEY_INFO_free(p8); 145 return NULL; 146 } 147 148 PKCS8_PRIV_KEY_INFO * 149 PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken) 150 { 151 switch (broken) { 152 case PKCS8_OK: 153 p8->broken = PKCS8_OK; 154 return p8; 155 break; 156 157 case PKCS8_NO_OCTET: 158 p8->broken = PKCS8_NO_OCTET; 159 p8->pkey->type = V_ASN1_SEQUENCE; 160 return p8; 161 break; 162 163 default: 164 EVPerror(EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE); 165 return NULL; 166 } 167 } 168 169 /* EVP_PKEY attribute functions */ 170 171 int 172 EVP_PKEY_get_attr_count(const EVP_PKEY *key) 173 { 174 return X509at_get_attr_count(key->attributes); 175 } 176 177 int 178 EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos) 179 { 180 return X509at_get_attr_by_NID(key->attributes, nid, lastpos); 181 } 182 183 int 184 EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj, int lastpos) 185 { 186 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos); 187 } 188 189 X509_ATTRIBUTE * 190 EVP_PKEY_get_attr(const EVP_PKEY *key, int loc) 191 { 192 return X509at_get_attr(key->attributes, loc); 193 } 194 195 X509_ATTRIBUTE * 196 EVP_PKEY_delete_attr(EVP_PKEY *key, int loc) 197 { 198 return X509at_delete_attr(key->attributes, loc); 199 } 200 201 int 202 EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr) 203 { 204 if (X509at_add1_attr(&key->attributes, attr)) 205 return 1; 206 return 0; 207 } 208 209 int 210 EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, const ASN1_OBJECT *obj, int type, 211 const unsigned char *bytes, int len) 212 { 213 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len)) 214 return 1; 215 return 0; 216 } 217 218 int 219 EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, int nid, int type, 220 const unsigned char *bytes, int len) 221 { 222 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len)) 223 return 1; 224 return 0; 225 } 226 227 int 228 EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, const char *attrname, int type, 229 const unsigned char *bytes, int len) 230 { 231 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, 232 bytes, len)) 233 return 1; 234 return 0; 235 } 236