diff options
Diffstat (limited to 'openssl/crypto/pkcs12/p12_kiss.c')
| -rw-r--r-- | openssl/crypto/pkcs12/p12_kiss.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/openssl/crypto/pkcs12/p12_kiss.c b/openssl/crypto/pkcs12/p12_kiss.c new file mode 100644 index 000000000..5c4c6ec98 --- /dev/null +++ b/openssl/crypto/pkcs12/p12_kiss.c @@ -0,0 +1,297 @@ +/* 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; +} + |