1 /* $OpenBSD: p12_npas.c,v 1.18 2023/02/16 08:38:17 tb Exp $ */ 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 #include "pkcs12_local.h" 67 #include "x509_local.h" 68 69 /* PKCS#12 password change routine */ 70 71 static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass); 72 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass, 73 const char *newpass); 74 static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, 75 const char *newpass); 76 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen); 77 78 /* 79 * Change the password on a PKCS#12 structure. 80 */ 81 82 int 83 PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass) 84 { 85 /* Check for NULL PKCS12 structure */ 86 87 if (!p12) { 88 PKCS12error(PKCS12_R_INVALID_NULL_PKCS12_POINTER); 89 return 0; 90 } 91 92 /* Check the mac */ 93 94 if (!PKCS12_verify_mac(p12, oldpass, -1)) { 95 PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE); 96 return 0; 97 } 98 99 if (!newpass_p12(p12, oldpass, newpass)) { 100 PKCS12error(PKCS12_R_PARSE_ERROR); 101 return 0; 102 } 103 104 return 1; 105 } 106 LCRYPTO_ALIAS(PKCS12_newpass); 107 108 /* Parse the outer PKCS#12 structure */ 109 110 static int 111 newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass) 112 { 113 STACK_OF(PKCS7) *asafes, *newsafes; 114 STACK_OF(PKCS12_SAFEBAG) *bags; 115 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0; 116 PKCS7 *p7, *p7new; 117 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL; 118 unsigned char mac[EVP_MAX_MD_SIZE]; 119 unsigned int maclen; 120 121 if (!(asafes = PKCS12_unpack_authsafes(p12))) 122 return 0; 123 if (!(newsafes = sk_PKCS7_new_null())) 124 return 0; 125 for (i = 0; i < sk_PKCS7_num(asafes); i++) { 126 p7 = sk_PKCS7_value(asafes, i); 127 bagnid = OBJ_obj2nid(p7->type); 128 if (bagnid == NID_pkcs7_data) { 129 bags = PKCS12_unpack_p7data(p7); 130 } else if (bagnid == NID_pkcs7_encrypted) { 131 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); 132 if (!alg_get(p7->d.encrypted->enc_data->algorithm, 133 &pbe_nid, &pbe_iter, &pbe_saltlen)) { 134 sk_PKCS12_SAFEBAG_pop_free(bags, 135 PKCS12_SAFEBAG_free); 136 bags = NULL; 137 } 138 } else 139 continue; 140 if (bags == NULL) 141 goto err; 142 if (!newpass_bags(bags, oldpass, newpass)) { 143 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 144 goto err; 145 } 146 /* Repack bag in same form with new password */ 147 if (bagnid == NID_pkcs7_data) 148 p7new = PKCS12_pack_p7data(bags); 149 else 150 p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, 151 NULL, pbe_saltlen, pbe_iter, bags); 152 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 153 if (p7new == NULL) 154 goto err; 155 if (sk_PKCS7_push(newsafes, p7new) == 0) 156 goto err; 157 } 158 sk_PKCS7_pop_free(asafes, PKCS7_free); 159 160 /* Repack safe: save old safe in case of error */ 161 162 p12_data_tmp = p12->authsafes->d.data; 163 if (!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) { 164 p12->authsafes->d.data = p12_data_tmp; 165 goto err; 166 } 167 if (!PKCS12_pack_authsafes(p12, newsafes)) 168 goto saferr; 169 170 if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) 171 goto saferr; 172 if (!(macnew = ASN1_OCTET_STRING_new())) 173 goto saferr; 174 if (!ASN1_OCTET_STRING_set(macnew, mac, maclen)) 175 goto saferr; 176 ASN1_OCTET_STRING_free(p12->mac->dinfo->digest); 177 p12->mac->dinfo->digest = macnew; 178 ASN1_OCTET_STRING_free(p12_data_tmp); 179 180 return 1; 181 182 saferr: 183 /* Restore old safe */ 184 ASN1_OCTET_STRING_free(p12->authsafes->d.data); 185 ASN1_OCTET_STRING_free(macnew); 186 p12->authsafes->d.data = p12_data_tmp; 187 return 0; 188 189 err: 190 sk_PKCS7_pop_free(asafes, PKCS7_free); 191 sk_PKCS7_pop_free(newsafes, PKCS7_free); 192 return 0; 193 } 194 195 196 static int 197 newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass, 198 const char *newpass) 199 { 200 int i; 201 202 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { 203 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), 204 oldpass, newpass)) 205 return 0; 206 } 207 return 1; 208 } 209 210 /* Change password of safebag: only needs handle shrouded keybags */ 211 212 static int 213 newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass, const char *newpass) 214 { 215 PKCS8_PRIV_KEY_INFO *p8; 216 X509_SIG *p8new; 217 int p8_nid, p8_saltlen, p8_iter; 218 219 if (OBJ_obj2nid(bag->type) != NID_pkcs8ShroudedKeyBag) 220 return 1; 221 222 if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) 223 return 0; 224 if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, 225 &p8_saltlen)) 226 return 0; 227 if (!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen, 228 p8_iter, p8))) return 0; 229 X509_SIG_free(bag->value.shkeybag); 230 bag->value.shkeybag = p8new; 231 return 1; 232 } 233 234 static int 235 alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen) 236 { 237 PBEPARAM *pbe; 238 const unsigned char *p; 239 240 p = alg->parameter->value.sequence->data; 241 pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length); 242 if (!pbe) 243 return 0; 244 *pnid = OBJ_obj2nid(alg->algorithm); 245 *piter = ASN1_INTEGER_get(pbe->iter); 246 *psaltlen = pbe->salt->length; 247 PBEPARAM_free(pbe); 248 return 1; 249 } 250