1 /* $OpenBSD: evp_pkey.c,v 1.17 2014/07/12 16:03:37 miod 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 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_MALLOC_FAILURE); 81 return NULL; 82 } 83 84 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) { 85 EVPerr(EVP_F_EVP_PKCS82PKEY, 86 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 EVPerr(EVP_F_EVP_PKCS82PKEY, 95 EVP_R_PRIVATE_KEY_DECODE_ERROR); 96 goto error; 97 } 98 } else { 99 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED); 100 goto error; 101 } 102 103 return pkey; 104 105 error: 106 EVP_PKEY_free(pkey); 107 return NULL; 108 } 109 110 PKCS8_PRIV_KEY_INFO * 111 EVP_PKEY2PKCS8(EVP_PKEY *pkey) 112 { 113 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK); 114 } 115 116 /* Turn a private key into a PKCS8 structure */ 117 118 PKCS8_PRIV_KEY_INFO * 119 EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken) 120 { 121 PKCS8_PRIV_KEY_INFO *p8; 122 123 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) { 124 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, ERR_R_MALLOC_FAILURE); 125 return NULL; 126 } 127 p8->broken = broken; 128 129 if (pkey->ameth) { 130 if (pkey->ameth->priv_encode) { 131 if (!pkey->ameth->priv_encode(p8, pkey)) { 132 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 133 EVP_R_PRIVATE_KEY_ENCODE_ERROR); 134 goto error; 135 } 136 } else { 137 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 138 EVP_R_METHOD_NOT_SUPPORTED); 139 goto error; 140 } 141 } else { 142 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 143 EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 144 goto error; 145 } 146 return p8; 147 148 error: 149 PKCS8_PRIV_KEY_INFO_free(p8); 150 return NULL; 151 } 152 153 PKCS8_PRIV_KEY_INFO * 154 PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken) 155 { 156 switch (broken) { 157 case PKCS8_OK: 158 p8->broken = PKCS8_OK; 159 return p8; 160 break; 161 162 case PKCS8_NO_OCTET: 163 p8->broken = PKCS8_NO_OCTET; 164 p8->pkey->type = V_ASN1_SEQUENCE; 165 return p8; 166 break; 167 168 default: 169 EVPerr(EVP_F_PKCS8_SET_BROKEN, EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE); 170 return NULL; 171 } 172 } 173 174 /* EVP_PKEY attribute functions */ 175 176 int 177 EVP_PKEY_get_attr_count(const EVP_PKEY *key) 178 { 179 return X509at_get_attr_count(key->attributes); 180 } 181 182 int 183 EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos) 184 { 185 return X509at_get_attr_by_NID(key->attributes, nid, lastpos); 186 } 187 188 int 189 EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj, int lastpos) 190 { 191 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos); 192 } 193 194 X509_ATTRIBUTE * 195 EVP_PKEY_get_attr(const EVP_PKEY *key, int loc) 196 { 197 return X509at_get_attr(key->attributes, loc); 198 } 199 200 X509_ATTRIBUTE * 201 EVP_PKEY_delete_attr(EVP_PKEY *key, int loc) 202 { 203 return X509at_delete_attr(key->attributes, loc); 204 } 205 206 int 207 EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr) 208 { 209 if (X509at_add1_attr(&key->attributes, attr)) 210 return 1; 211 return 0; 212 } 213 214 int 215 EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, const ASN1_OBJECT *obj, int type, 216 const unsigned char *bytes, int len) 217 { 218 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len)) 219 return 1; 220 return 0; 221 } 222 223 int 224 EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, int nid, int type, 225 const unsigned char *bytes, int len) 226 { 227 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len)) 228 return 1; 229 return 0; 230 } 231 232 int 233 EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, const char *attrname, int type, 234 const unsigned char *bytes, int len) 235 { 236 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, 237 bytes, len)) 238 return 1; 239 return 0; 240 } 241