1 /* evp_pkey.c */ 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 #include "cryptlib.h" 62 #include <openssl/x509.h> 63 #include <openssl/rand.h> 64 #include "asn1_locl.h" 65 66 /* Extract a private key from a PKCS8 structure */ 67 68 EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8) 69 { 70 EVP_PKEY *pkey = NULL; 71 ASN1_OBJECT *algoid; 72 char obj_tmp[80]; 73 74 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8)) 75 return NULL; 76 77 if (!(pkey = EVP_PKEY_new())) { 78 EVPerr(EVP_F_EVP_PKCS82PKEY,ERR_R_MALLOC_FAILURE); 79 return NULL; 80 } 81 82 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) 83 { 84 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 85 i2t_ASN1_OBJECT(obj_tmp, 80, algoid); 86 ERR_add_error_data(2, "TYPE=", obj_tmp); 87 goto error; 88 } 89 90 if (pkey->ameth->priv_decode) 91 { 92 if (!pkey->ameth->priv_decode(pkey, p8)) 93 { 94 EVPerr(EVP_F_EVP_PKCS82PKEY, 95 EVP_R_PRIVATE_KEY_DECODE_ERROR); 96 goto error; 97 } 98 } 99 else 100 { 101 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED); 102 goto error; 103 } 104 105 return pkey; 106 107 error: 108 EVP_PKEY_free (pkey); 109 return NULL; 110 } 111 112 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey) 113 { 114 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK); 115 } 116 117 /* Turn a private key into a PKCS8 structure */ 118 119 PKCS8_PRIV_KEY_INFO *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 { 131 if (pkey->ameth->priv_encode) 132 { 133 if (!pkey->ameth->priv_encode(p8, pkey)) 134 { 135 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 136 EVP_R_PRIVATE_KEY_ENCODE_ERROR); 137 goto error; 138 } 139 } 140 else 141 { 142 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 143 EVP_R_METHOD_NOT_SUPPORTED); 144 goto error; 145 } 146 } 147 else 148 { 149 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 150 EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 151 goto error; 152 } 153 RAND_add(p8->pkey->value.octet_string->data, 154 p8->pkey->value.octet_string->length, 0.0); 155 return p8; 156 error: 157 PKCS8_PRIV_KEY_INFO_free(p8); 158 return NULL; 159 } 160 161 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken) 162 { 163 switch (broken) { 164 165 case PKCS8_OK: 166 p8->broken = PKCS8_OK; 167 return p8; 168 break; 169 170 case PKCS8_NO_OCTET: 171 p8->broken = PKCS8_NO_OCTET; 172 p8->pkey->type = V_ASN1_SEQUENCE; 173 return p8; 174 break; 175 176 default: 177 EVPerr(EVP_F_PKCS8_SET_BROKEN,EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE); 178 return NULL; 179 } 180 } 181 182 /* EVP_PKEY attribute functions */ 183 184 int EVP_PKEY_get_attr_count(const EVP_PKEY *key) 185 { 186 return X509at_get_attr_count(key->attributes); 187 } 188 189 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, 190 int lastpos) 191 { 192 return X509at_get_attr_by_NID(key->attributes, nid, lastpos); 193 } 194 195 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj, 196 int lastpos) 197 { 198 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos); 199 } 200 201 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc) 202 { 203 return X509at_get_attr(key->attributes, loc); 204 } 205 206 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc) 207 { 208 return X509at_delete_attr(key->attributes, loc); 209 } 210 211 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr) 212 { 213 if(X509at_add1_attr(&key->attributes, attr)) return 1; 214 return 0; 215 } 216 217 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, 218 const ASN1_OBJECT *obj, int type, 219 const unsigned char *bytes, int len) 220 { 221 if(X509at_add1_attr_by_OBJ(&key->attributes, obj, 222 type, bytes, len)) return 1; 223 return 0; 224 } 225 226 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, 227 int nid, int type, 228 const unsigned char *bytes, int len) 229 { 230 if(X509at_add1_attr_by_NID(&key->attributes, nid, 231 type, bytes, len)) return 1; 232 return 0; 233 } 234 235 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, 236 const char *attrname, int type, 237 const unsigned char *bytes, int len) 238 { 239 if(X509at_add1_attr_by_txt(&key->attributes, attrname, 240 type, bytes, len)) return 1; 241 return 0; 242 } 243