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1 /* p12_npas.c */ |
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2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL |
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3 * project 1999. |
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4 */ |
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5 /* ==================================================================== |
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6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
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7 * |
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8 * Redistribution and use in source and binary forms, with or without |
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9 * modification, are permitted provided that the following conditions |
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10 * are met: |
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11 * |
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12 * 1. Redistributions of source code must retain the above copyright |
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13 * notice, this list of conditions and the following disclaimer. |
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14 * |
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15 * 2. Redistributions in binary form must reproduce the above copyright |
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16 * notice, this list of conditions and the following disclaimer in |
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17 * the documentation and/or other materials provided with the |
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18 * distribution. |
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19 * |
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20 * 3. All advertising materials mentioning features or use of this |
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21 * software must display the following acknowledgment: |
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22 * "This product includes software developed by the OpenSSL Project |
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23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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24 * |
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25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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26 * endorse or promote products derived from this software without |
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27 * prior written permission. For written permission, please contact |
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28 * licensing@OpenSSL.org. |
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29 * |
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30 * 5. Products derived from this software may not be called "OpenSSL" |
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31 * nor may "OpenSSL" appear in their names without prior written |
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32 * permission of the OpenSSL Project. |
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33 * |
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34 * 6. Redistributions of any form whatsoever must retain the following |
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35 * acknowledgment: |
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36 * "This product includes software developed by the OpenSSL Project |
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37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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38 * |
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39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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50 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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51 * ==================================================================== |
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52 * |
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53 * This product includes cryptographic software written by Eric Young |
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54 * (eay@cryptsoft.com). This product includes software written by Tim |
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55 * Hudson (tjh@cryptsoft.com). |
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56 * |
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57 */ |
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58 |
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59 #include <stdio.h> |
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60 #include <stdlib.h> |
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61 #include <string.h> |
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62 #include <openssl/pem.h> |
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63 #include <openssl/err.h> |
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64 #include <openssl/pkcs12.h> |
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65 |
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66 /* PKCS#12 password change routine */ |
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67 |
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68 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass); |
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69 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, |
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70 char *newpass); |
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71 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass); |
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72 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen); |
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73 |
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74 /* |
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75 * Change the password on a PKCS#12 structure. |
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76 */ |
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77 |
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78 EXPORT_C int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass) |
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79 { |
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80 /* Check for NULL PKCS12 structure */ |
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81 |
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82 if(!p12) { |
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83 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_INVALID_NULL_PKCS12_POINTER); |
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84 return 0; |
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85 } |
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86 |
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87 /* Check the mac */ |
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88 |
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89 if (!PKCS12_verify_mac(p12, oldpass, -1)) { |
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90 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_MAC_VERIFY_FAILURE); |
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91 return 0; |
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92 } |
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93 |
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94 if (!newpass_p12(p12, oldpass, newpass)) { |
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95 PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_PARSE_ERROR); |
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96 return 0; |
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97 } |
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98 |
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99 return 1; |
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100 } |
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101 |
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102 /* Parse the outer PKCS#12 structure */ |
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103 |
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104 static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass) |
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105 { |
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106 STACK_OF(PKCS7) *asafes, *newsafes; |
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107 STACK_OF(PKCS12_SAFEBAG) *bags; |
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108 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0; |
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109 PKCS7 *p7, *p7new; |
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110 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL; |
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111 unsigned char mac[EVP_MAX_MD_SIZE]; |
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112 unsigned int maclen; |
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113 |
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114 if (!(asafes = PKCS12_unpack_authsafes(p12))) return 0; |
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115 if(!(newsafes = sk_PKCS7_new_null())) return 0; |
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116 for (i = 0; i < sk_PKCS7_num (asafes); i++) { |
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117 p7 = sk_PKCS7_value(asafes, i); |
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118 bagnid = OBJ_obj2nid(p7->type); |
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119 if (bagnid == NID_pkcs7_data) { |
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120 bags = PKCS12_unpack_p7data(p7); |
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121 } else if (bagnid == NID_pkcs7_encrypted) { |
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122 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); |
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123 alg_get(p7->d.encrypted->enc_data->algorithm, |
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124 &pbe_nid, &pbe_iter, &pbe_saltlen); |
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125 } else continue; |
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126 if (!bags) { |
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127 sk_PKCS7_pop_free(asafes, PKCS7_free); |
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128 return 0; |
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129 } |
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130 if (!newpass_bags(bags, oldpass, newpass)) { |
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131 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); |
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132 sk_PKCS7_pop_free(asafes, PKCS7_free); |
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133 return 0; |
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134 } |
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135 /* Repack bag in same form with new password */ |
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136 if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags); |
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137 else p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL, |
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138 pbe_saltlen, pbe_iter, bags); |
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139 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); |
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140 if(!p7new) { |
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141 sk_PKCS7_pop_free(asafes, PKCS7_free); |
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142 return 0; |
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143 } |
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144 sk_PKCS7_push(newsafes, p7new); |
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145 } |
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146 sk_PKCS7_pop_free(asafes, PKCS7_free); |
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147 |
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148 /* Repack safe: save old safe in case of error */ |
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149 |
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150 p12_data_tmp = p12->authsafes->d.data; |
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151 if(!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) goto saferr; |
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152 if(!PKCS12_pack_authsafes(p12, newsafes)) goto saferr; |
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153 |
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154 if(!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) goto saferr; |
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155 if(!(macnew = ASN1_OCTET_STRING_new())) goto saferr; |
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156 if(!ASN1_OCTET_STRING_set(macnew, mac, maclen)) goto saferr; |
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157 ASN1_OCTET_STRING_free(p12->mac->dinfo->digest); |
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158 p12->mac->dinfo->digest = macnew; |
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159 ASN1_OCTET_STRING_free(p12_data_tmp); |
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160 |
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161 return 1; |
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162 |
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163 saferr: |
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164 /* Restore old safe */ |
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165 ASN1_OCTET_STRING_free(p12->authsafes->d.data); |
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166 ASN1_OCTET_STRING_free(macnew); |
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167 p12->authsafes->d.data = p12_data_tmp; |
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168 return 0; |
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169 |
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170 } |
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171 |
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172 |
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173 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, |
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174 char *newpass) |
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175 { |
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176 int i; |
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177 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { |
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178 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), |
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179 oldpass, newpass)) |
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180 return 0; |
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181 } |
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182 return 1; |
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183 } |
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184 |
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185 /* Change password of safebag: only needs handle shrouded keybags */ |
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186 |
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187 static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass) |
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188 { |
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189 PKCS8_PRIV_KEY_INFO *p8; |
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190 X509_SIG *p8new; |
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191 int p8_nid, p8_saltlen, p8_iter; |
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192 |
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193 if(M_PKCS12_bag_type(bag) != NID_pkcs8ShroudedKeyBag) return 1; |
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194 |
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195 if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) return 0; |
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196 alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, &p8_saltlen); |
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197 if(!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen, |
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198 p8_iter, p8))) return 0; |
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199 X509_SIG_free(bag->value.shkeybag); |
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200 bag->value.shkeybag = p8new; |
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201 return 1; |
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202 } |
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203 |
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204 static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen) |
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205 { |
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206 PBEPARAM *pbe; |
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207 const unsigned char *p; |
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208 |
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209 p = alg->parameter->value.sequence->data; |
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210 pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length); |
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211 *pnid = OBJ_obj2nid(alg->algorithm); |
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212 *piter = ASN1_INTEGER_get(pbe->iter); |
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213 *psaltlen = pbe->salt->length; |
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214 PBEPARAM_free(pbe); |
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215 return 0; |
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216 } |