1 /* p12_npas.c */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 1999. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 1999 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 <string.h> 62 #include <openssl/pem.h> 63 #include <openssl/err.h> 64 #include <openssl/pkcs12.h> 65 66 /* PKCS#12 password change routine */ 67 68 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass); 69 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, 70 char *newpass); 71 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass); 72 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen); 73 74 /* 75 * Change the password on a PKCS#12 structure. 76 */ 77 78 int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass) 79 { 80 /* Check for NULL PKCS12 structure */ 81 82 if(!p12) { 83 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_INVALID_NULL_PKCS12_POINTER); 84 return 0; 85 } 86 87 /* Check the mac */ 88 89 if (!PKCS12_verify_mac(p12, oldpass, -1)) { 90 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_MAC_VERIFY_FAILURE); 91 return 0; 92 } 93 94 if (!newpass_p12(p12, oldpass, newpass)) { 95 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_PARSE_ERROR); 96 return 0; 97 } 98 99 return 1; 100 } 101 102 /* Parse the outer PKCS#12 structure */ 103 104 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass) 105 { 106 STACK_OF(PKCS7) *asafes, *newsafes; 107 STACK_OF(PKCS12_SAFEBAG) *bags; 108 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0; 109 PKCS7 *p7, *p7new; 110 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL; 111 unsigned char mac[EVP_MAX_MD_SIZE]; 112 unsigned int maclen; 113 114 if (!(asafes = PKCS12_unpack_authsafes(p12))) return 0; 115 if(!(newsafes = sk_PKCS7_new_null())) return 0; 116 for (i = 0; i < sk_PKCS7_num (asafes); i++) { 117 p7 = sk_PKCS7_value(asafes, i); 118 bagnid = OBJ_obj2nid(p7->type); 119 if (bagnid == NID_pkcs7_data) { 120 bags = PKCS12_unpack_p7data(p7); 121 } else if (bagnid == NID_pkcs7_encrypted) { 122 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); 123 if (!alg_get(p7->d.encrypted->enc_data->algorithm, 124 &pbe_nid, &pbe_iter, &pbe_saltlen)) 125 { 126 sk_PKCS12_SAFEBAG_pop_free(bags, 127 PKCS12_SAFEBAG_free); 128 bags = NULL; 129 } 130 } else continue; 131 if (!bags) { 132 sk_PKCS7_pop_free(asafes, PKCS7_free); 133 return 0; 134 } 135 if (!newpass_bags(bags, oldpass, newpass)) { 136 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 137 sk_PKCS7_pop_free(asafes, PKCS7_free); 138 return 0; 139 } 140 /* Repack bag in same form with new password */ 141 if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags); 142 else p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL, 143 pbe_saltlen, pbe_iter, bags); 144 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 145 if(!p7new) { 146 sk_PKCS7_pop_free(asafes, PKCS7_free); 147 return 0; 148 } 149 sk_PKCS7_push(newsafes, p7new); 150 } 151 sk_PKCS7_pop_free(asafes, PKCS7_free); 152 153 /* Repack safe: save old safe in case of error */ 154 155 p12_data_tmp = p12->authsafes->d.data; 156 if(!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) goto saferr; 157 if(!PKCS12_pack_authsafes(p12, newsafes)) goto saferr; 158 159 if(!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) goto saferr; 160 if(!(macnew = ASN1_OCTET_STRING_new())) goto saferr; 161 if(!ASN1_OCTET_STRING_set(macnew, mac, maclen)) goto saferr; 162 ASN1_OCTET_STRING_free(p12->mac->dinfo->digest); 163 p12->mac->dinfo->digest = macnew; 164 ASN1_OCTET_STRING_free(p12_data_tmp); 165 166 return 1; 167 168 saferr: 169 /* Restore old safe */ 170 ASN1_OCTET_STRING_free(p12->authsafes->d.data); 171 ASN1_OCTET_STRING_free(macnew); 172 p12->authsafes->d.data = p12_data_tmp; 173 return 0; 174 175 } 176 177 178 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, 179 char *newpass) 180 { 181 int i; 182 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { 183 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), 184 oldpass, newpass)) 185 return 0; 186 } 187 return 1; 188 } 189 190 /* Change password of safebag: only needs handle shrouded keybags */ 191 192 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass) 193 { 194 PKCS8_PRIV_KEY_INFO *p8; 195 X509_SIG *p8new; 196 int p8_nid, p8_saltlen, p8_iter; 197 198 if(M_PKCS12_bag_type(bag) != NID_pkcs8ShroudedKeyBag) return 1; 199 200 if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) return 0; 201 if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, 202 &p8_saltlen)) 203 return 0; 204 if(!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen, 205 p8_iter, p8))) return 0; 206 X509_SIG_free(bag->value.shkeybag); 207 bag->value.shkeybag = p8new; 208 return 1; 209 } 210 211 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen) 212 { 213 PBEPARAM *pbe; 214 const unsigned char *p; 215 216 p = alg->parameter->value.sequence->data; 217 pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length); 218 if (!pbe) 219 return 0; 220 *pnid = OBJ_obj2nid(alg->algorithm); 221 *piter = ASN1_INTEGER_get(pbe->iter); 222 *psaltlen = pbe->salt->length; 223 PBEPARAM_free(pbe); 224 return 1; 225 } 226