/* v3_akey.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/conf.h> #include <openssl/asn1.h> #include <openssl/asn1t.h> #include <openssl/x509v3.h> static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist); static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values); const X509V3_EXT_METHOD v3_akey_id = { NID_authority_key_identifier, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID), 0,0,0,0, 0,0, (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID, (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID, 0,0, NULL }; static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist) { char *tmp; if(akeyid->keyid) { tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); X509V3_add_value("keyid", tmp, &extlist); OPENSSL_free(tmp); } if(akeyid->issuer) extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist); if(akeyid->serial) { tmp = hex_to_string(akeyid->serial->data, akeyid->serial->length); X509V3_add_value("serial", tmp, &extlist); OPENSSL_free(tmp); } return extlist; } /* Currently two options: * keyid: use the issuers subject keyid, the value 'always' means its is * an error if the issuer certificate doesn't have a key id. * issuer: use the issuers cert issuer and serial number. The default is * to only use this if keyid is not present. With the option 'always' * this is always included. */ static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values) { char keyid=0, issuer=0; int i; CONF_VALUE *cnf; ASN1_OCTET_STRING *ikeyid = NULL; X509_NAME *isname = NULL; GENERAL_NAMES * gens = NULL; GENERAL_NAME *gen = NULL; ASN1_INTEGER *serial = NULL; X509_EXTENSION *ext; X509 *cert; AUTHORITY_KEYID *akeyid; for(i = 0; i < sk_CONF_VALUE_num(values); i++) { cnf = sk_CONF_VALUE_value(values, i); if(!strcmp(cnf->name, "keyid")) { keyid = 1; if(cnf->value && !strcmp(cnf->value, "always")) keyid = 2; } else if(!strcmp(cnf->name, "issuer")) { issuer = 1; if(cnf->value && !strcmp(cnf->value, "always")) issuer = 2; } else { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNKNOWN_OPTION); ERR_add_error_data(2, "name=", cnf->name); return NULL; } } if(!ctx || !ctx->issuer_cert) { if(ctx && (ctx->flags==CTX_TEST)) return AUTHORITY_KEYID_new(); X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE); return NULL; } cert = ctx->issuer_cert; if(keyid) { i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1); if((i >= 0) && (ext = X509_get_ext(cert, i))) ikeyid = X509V3_EXT_d2i(ext); if(keyid==2 && !ikeyid) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID); return NULL; } } if((issuer && !ikeyid) || (issuer == 2)) { isname = X509_NAME_dup(X509_get_issuer_name(cert)); serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert)); if(!isname || !serial) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS); goto err; } } if(!(akeyid = AUTHORITY_KEYID_new())) goto err; if(isname) { if(!(gens = sk_GENERAL_NAME_new_null()) || !(gen = GENERAL_NAME_new()) || !sk_GENERAL_NAME_push(gens, gen)) { X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE); goto err; } gen->type = GEN_DIRNAME; gen->d.dirn = isname; } akeyid->issuer = gens; akeyid->serial = serial; akeyid->keyid = ikeyid; return akeyid; err: X509_NAME_free(isname); M_ASN1_INTEGER_free(serial); M_ASN1_OCTET_STRING_free(ikeyid); return NULL; }