diff options
Diffstat (limited to 'openssl/crypto/pkcs12/p12_npas.c')
| -rw-r--r-- | openssl/crypto/pkcs12/p12_npas.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/openssl/crypto/pkcs12/p12_npas.c b/openssl/crypto/pkcs12/p12_npas.c new file mode 100644 index 00000000..2f713551 --- /dev/null +++ b/openssl/crypto/pkcs12/p12_npas.c @@ -0,0 +1,225 @@ +/* p12_npas.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 1999. + */ +/* ==================================================================== + * Copyright (c) 1999 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <openssl/pem.h> +#include <openssl/err.h> +#include <openssl/pkcs12.h> + +/* PKCS#12 password change routine */ + +static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass); +static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, + char *newpass); +static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass); +static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen); + +/* + * Change the password on a PKCS#12 structure. + */ + +int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass) +{ + /* Check for NULL PKCS12 structure */ + + if(!p12) { + PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_INVALID_NULL_PKCS12_POINTER); + return 0; + } + + /* Check the mac */ + + if (!PKCS12_verify_mac(p12, oldpass, -1)) { + PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_MAC_VERIFY_FAILURE); + return 0; + } + + if (!newpass_p12(p12, oldpass, newpass)) { + PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_PARSE_ERROR); + return 0; + } + + return 1; +} + +/* Parse the outer PKCS#12 structure */ + +static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass) +{ + STACK_OF(PKCS7) *asafes, *newsafes; + STACK_OF(PKCS12_SAFEBAG) *bags; + int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0; + PKCS7 *p7, *p7new; + ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL; + unsigned char mac[EVP_MAX_MD_SIZE]; + unsigned int maclen; + + if (!(asafes = PKCS12_unpack_authsafes(p12))) return 0; + if(!(newsafes = sk_PKCS7_new_null())) return 0; + for (i = 0; i < sk_PKCS7_num (asafes); i++) { + p7 = sk_PKCS7_value(asafes, i); + bagnid = OBJ_obj2nid(p7->type); + if (bagnid == NID_pkcs7_data) { + bags = PKCS12_unpack_p7data(p7); + } else if (bagnid == NID_pkcs7_encrypted) { + bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); + if (!alg_get(p7->d.encrypted->enc_data->algorithm, + &pbe_nid, &pbe_iter, &pbe_saltlen)) + { + sk_PKCS12_SAFEBAG_pop_free(bags, + PKCS12_SAFEBAG_free); + bags = NULL; + } + } else continue; + if (!bags) { + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 0; + } + if (!newpass_bags(bags, oldpass, newpass)) { + sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 0; + } + /* Repack bag in same form with new password */ + if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags); + else p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL, + pbe_saltlen, pbe_iter, bags); + sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); + if(!p7new) { + sk_PKCS7_pop_free(asafes, PKCS7_free); + return 0; + } + sk_PKCS7_push(newsafes, p7new); + } + sk_PKCS7_pop_free(asafes, PKCS7_free); + + /* Repack safe: save old safe in case of error */ + + p12_data_tmp = p12->authsafes->d.data; + if(!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) goto saferr; + if(!PKCS12_pack_authsafes(p12, newsafes)) goto saferr; + + if(!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) goto saferr; + if(!(macnew = ASN1_OCTET_STRING_new())) goto saferr; + if(!ASN1_OCTET_STRING_set(macnew, mac, maclen)) goto saferr; + ASN1_OCTET_STRING_free(p12->mac->dinfo->digest); + p12->mac->dinfo->digest = macnew; + ASN1_OCTET_STRING_free(p12_data_tmp); + + return 1; + + saferr: + /* Restore old safe */ + ASN1_OCTET_STRING_free(p12->authsafes->d.data); + ASN1_OCTET_STRING_free(macnew); + p12->authsafes->d.data = p12_data_tmp; + return 0; + +} + + +static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass, + char *newpass) +{ + int i; + for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { + if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), + oldpass, newpass)) + return 0; + } + return 1; +} + +/* Change password of safebag: only needs handle shrouded keybags */ + +static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass) +{ + PKCS8_PRIV_KEY_INFO *p8; + X509_SIG *p8new; + int p8_nid, p8_saltlen, p8_iter; + + if(M_PKCS12_bag_type(bag) != NID_pkcs8ShroudedKeyBag) return 1; + + if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) return 0; + if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, + &p8_saltlen)) + return 0; + if(!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen, + p8_iter, p8))) return 0; + X509_SIG_free(bag->value.shkeybag); + bag->value.shkeybag = p8new; + return 1; +} + +static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen) +{ + PBEPARAM *pbe; + const unsigned char *p; + + p = alg->parameter->value.sequence->data; + pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length); + if (!pbe) + return 0; + *pnid = OBJ_obj2nid(alg->algorithm); + *piter = ASN1_INTEGER_get(pbe->iter); + *psaltlen = pbe->salt->length; + PBEPARAM_free(pbe); + return 1; +} |