1 /* evp_pkey.c */ 2 /* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 1999. 5 */ 6 /* ==================================================================== 7 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include "cryptlib.h" 63 #include <openssl/x509.h> 64 #include <openssl/rand.h> 65 #include "asn1_locl.h" 66 67 /* Extract a private key from a PKCS8 structure */ 68 69 EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8) 70 { 71 EVP_PKEY *pkey = NULL; 72 ASN1_OBJECT *algoid; 73 char obj_tmp[80]; 74 75 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8)) 76 return NULL; 77 78 if (!(pkey = EVP_PKEY_new())) { 79 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_MALLOC_FAILURE); 80 return NULL; 81 } 82 83 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) { 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 if (!pkey->ameth->priv_decode(pkey, p8)) { 92 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_PRIVATE_KEY_DECODE_ERROR); 93 goto error; 94 } 95 } else { 96 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED); 97 goto error; 98 } 99 100 return pkey; 101 102 error: 103 EVP_PKEY_free(pkey); 104 return NULL; 105 } 106 107 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey) 108 { 109 return EVP_PKEY2PKCS8_broken(pkey, PKCS8_OK); 110 } 111 112 /* Turn a private key into a PKCS8 structure */ 113 114 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken) 115 { 116 PKCS8_PRIV_KEY_INFO *p8; 117 118 if (!(p8 = PKCS8_PRIV_KEY_INFO_new())) { 119 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, ERR_R_MALLOC_FAILURE); 120 return NULL; 121 } 122 p8->broken = broken; 123 124 if (pkey->ameth) { 125 if (pkey->ameth->priv_encode) { 126 if (!pkey->ameth->priv_encode(p8, pkey)) { 127 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 128 EVP_R_PRIVATE_KEY_ENCODE_ERROR); 129 goto error; 130 } 131 } else { 132 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, EVP_R_METHOD_NOT_SUPPORTED); 133 goto error; 134 } 135 } else { 136 EVPerr(EVP_F_EVP_PKEY2PKCS8_BROKEN, 137 EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM); 138 goto error; 139 } 140 RAND_add(p8->pkey->value.octet_string->data, 141 p8->pkey->value.octet_string->length, 0.0); 142 return p8; 143 error: 144 PKCS8_PRIV_KEY_INFO_free(p8); 145 return NULL; 146 } 147 148 PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken) 149 { 150 switch (broken) { 151 152 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 EVPerr(EVP_F_PKCS8_SET_BROKEN, EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE); 165 return NULL; 166 } 167 } 168 169 /* EVP_PKEY attribute functions */ 170 171 int EVP_PKEY_get_attr_count(const EVP_PKEY *key) 172 { 173 return X509at_get_attr_count(key->attributes); 174 } 175 176 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos) 177 { 178 return X509at_get_attr_by_NID(key->attributes, nid, lastpos); 179 } 180 181 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, ASN1_OBJECT *obj, 182 int lastpos) 183 { 184 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos); 185 } 186 187 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc) 188 { 189 return X509at_get_attr(key->attributes, loc); 190 } 191 192 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc) 193 { 194 return X509at_delete_attr(key->attributes, loc); 195 } 196 197 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr) 198 { 199 if (X509at_add1_attr(&key->attributes, attr)) 200 return 1; 201 return 0; 202 } 203 204 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key, 205 const ASN1_OBJECT *obj, int type, 206 const unsigned char *bytes, int len) 207 { 208 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len)) 209 return 1; 210 return 0; 211 } 212 213 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key, 214 int nid, int type, 215 const unsigned char *bytes, int len) 216 { 217 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len)) 218 return 1; 219 return 0; 220 } 221 222 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key, 223 const char *attrname, int type, 224 const unsigned char *bytes, int len) 225 { 226 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, bytes, len)) 227 return 1; 228 return 0; 229 } 230