| /* p12_kiss.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 "cryptlib.h" |
| #include <openssl/pkcs12.h> |
| |
| /* Simplified PKCS#12 routines */ |
| |
| static int parse_pk12( PKCS12 *p12, const char *pass, int passlen, |
| EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca); |
| |
| static int parse_bags( STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass, |
| int passlen, EVP_PKEY **pkey, X509 **cert, |
| STACK_OF(X509) **ca, ASN1_OCTET_STRING **keyid, |
| char *keymatch); |
| |
| static int parse_bag( PKCS12_SAFEBAG *bag, const char *pass, int passlen, |
| EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca, |
| ASN1_OCTET_STRING **keyid, char *keymatch); |
| |
| /* Parse and decrypt a PKCS#12 structure returning user key, user cert |
| * and other (CA) certs. Note either ca should be NULL, *ca should be NULL, |
| * or it should point to a valid STACK structure. pkey and cert can be |
| * passed unitialised. |
| */ |
| |
| int PKCS12_parse(PKCS12 *p12, const char *pass, EVP_PKEY **pkey, X509 **cert, |
| STACK_OF(X509) **ca) |
| { |
| |
| /* Check for NULL PKCS12 structure */ |
| |
| if(!p12) { |
| PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_INVALID_NULL_PKCS12_POINTER); |
| return 0; |
| } |
| |
| /* Allocate stack for ca certificates if needed */ |
| if ((ca != NULL) && (*ca == NULL)) { |
| if (!(*ca = sk_X509_new_null())) { |
| PKCS12err(PKCS12_F_PKCS12_PARSE,ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| |
| if(pkey) *pkey = NULL; |
| if(cert) *cert = NULL; |
| |
| /* Check the mac */ |
| |
| /* If password is zero length or NULL then try verifying both cases |
| * to determine which password is correct. The reason for this is that |
| * under PKCS#12 password based encryption no password and a zero length |
| * password are two different things... |
| */ |
| |
| if(!pass || !*pass) { |
| if(PKCS12_verify_mac(p12, NULL, 0)) pass = NULL; |
| else if(PKCS12_verify_mac(p12, "", 0)) pass = ""; |
| else { |
| PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_MAC_VERIFY_FAILURE); |
| goto err; |
| } |
| } else if (!PKCS12_verify_mac(p12, pass, -1)) { |
| PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_MAC_VERIFY_FAILURE); |
| goto err; |
| } |
| |
| if (!parse_pk12 (p12, pass, -1, pkey, cert, ca)) |
| { |
| PKCS12err(PKCS12_F_PKCS12_PARSE,PKCS12_R_PARSE_ERROR); |
| goto err; |
| } |
| |
| return 1; |
| |
| err: |
| |
| if (pkey && *pkey) EVP_PKEY_free(*pkey); |
| if (cert && *cert) X509_free(*cert); |
| if (ca) sk_X509_pop_free(*ca, X509_free); |
| return 0; |
| |
| } |
| |
| /* Parse the outer PKCS#12 structure */ |
| |
| static int parse_pk12(PKCS12 *p12, const char *pass, int passlen, |
| EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca) |
| { |
| STACK_OF(PKCS7) *asafes; |
| STACK_OF(PKCS12_SAFEBAG) *bags; |
| int i, bagnid; |
| PKCS7 *p7; |
| ASN1_OCTET_STRING *keyid = NULL; |
| |
| char keymatch = 0; |
| if (!(asafes = PKCS12_unpack_authsafes (p12))) 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, pass, passlen); |
| } else continue; |
| if (!bags) { |
| sk_PKCS7_pop_free(asafes, PKCS7_free); |
| return 0; |
| } |
| if (!parse_bags(bags, pass, passlen, pkey, cert, ca, |
| &keyid, &keymatch)) { |
| sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); |
| sk_PKCS7_pop_free(asafes, PKCS7_free); |
| return 0; |
| } |
| sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); |
| } |
| sk_PKCS7_pop_free(asafes, PKCS7_free); |
| if (keyid) M_ASN1_OCTET_STRING_free(keyid); |
| return 1; |
| } |
| |
| |
| static int parse_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass, |
| int passlen, EVP_PKEY **pkey, X509 **cert, |
| STACK_OF(X509) **ca, ASN1_OCTET_STRING **keyid, |
| char *keymatch) |
| { |
| int i; |
| for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) { |
| if (!parse_bag(sk_PKCS12_SAFEBAG_value (bags, i), |
| pass, passlen, pkey, cert, ca, keyid, |
| keymatch)) return 0; |
| } |
| return 1; |
| } |
| |
| #define MATCH_KEY 0x1 |
| #define MATCH_CERT 0x2 |
| #define MATCH_ALL 0x3 |
| |
| static int parse_bag(PKCS12_SAFEBAG *bag, const char *pass, int passlen, |
| EVP_PKEY **pkey, X509 **cert, STACK_OF(X509) **ca, |
| ASN1_OCTET_STRING **keyid, |
| char *keymatch) |
| { |
| PKCS8_PRIV_KEY_INFO *p8; |
| X509 *x509; |
| ASN1_OCTET_STRING *lkey = NULL, *ckid = NULL; |
| ASN1_TYPE *attrib; |
| ASN1_BMPSTRING *fname = NULL; |
| |
| if ((attrib = PKCS12_get_attr (bag, NID_friendlyName))) |
| fname = attrib->value.bmpstring; |
| |
| if ((attrib = PKCS12_get_attr (bag, NID_localKeyID))) { |
| lkey = attrib->value.octet_string; |
| ckid = lkey; |
| } |
| |
| /* Check for any local key id matching (if needed) */ |
| if (lkey && ((*keymatch & MATCH_ALL) != MATCH_ALL)) { |
| if (*keyid) { |
| if (M_ASN1_OCTET_STRING_cmp(*keyid, lkey)) lkey = NULL; |
| } else { |
| if (!(*keyid = M_ASN1_OCTET_STRING_dup(lkey))) { |
| PKCS12err(PKCS12_F_PARSE_BAG,ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| } |
| |
| switch (M_PKCS12_bag_type(bag)) |
| { |
| case NID_keyBag: |
| if (!lkey || !pkey) return 1; |
| if (!(*pkey = EVP_PKCS82PKEY(bag->value.keybag))) return 0; |
| *keymatch |= MATCH_KEY; |
| break; |
| |
| case NID_pkcs8ShroudedKeyBag: |
| if (!lkey || !pkey) return 1; |
| if (!(p8 = PKCS12_decrypt_skey(bag, pass, passlen))) |
| return 0; |
| *pkey = EVP_PKCS82PKEY(p8); |
| PKCS8_PRIV_KEY_INFO_free(p8); |
| if (!(*pkey)) return 0; |
| *keymatch |= MATCH_KEY; |
| break; |
| |
| case NID_certBag: |
| if (M_PKCS12_cert_bag_type(bag) != NID_x509Certificate ) |
| return 1; |
| if (!(x509 = PKCS12_certbag2x509(bag))) return 0; |
| if(ckid) |
| { |
| if (!X509_keyid_set1(x509, ckid->data, ckid->length)) |
| { |
| X509_free(x509); |
| return 0; |
| } |
| } |
| if(fname) { |
| int len, r; |
| unsigned char *data; |
| len = ASN1_STRING_to_UTF8(&data, fname); |
| if(len > 0) { |
| r = X509_alias_set1(x509, data, len); |
| OPENSSL_free(data); |
| if (!r) |
| { |
| X509_free(x509); |
| return 0; |
| } |
| } |
| } |
| |
| |
| if (lkey) { |
| *keymatch |= MATCH_CERT; |
| if (cert) *cert = x509; |
| else X509_free(x509); |
| } else { |
| if(ca) sk_X509_push (*ca, x509); |
| else X509_free(x509); |
| } |
| break; |
| |
| case NID_safeContentsBag: |
| return parse_bags(bag->value.safes, pass, passlen, |
| pkey, cert, ca, keyid, keymatch); |
| break; |
| |
| default: |
| return 1; |
| break; |
| } |
| return 1; |
| } |
| |
