/* v3_akey.c */ /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 #include "cryptlib.h" #include #include #include #include static STACK *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK *extlist); static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK *values); X509V3_EXT_METHOD v3_akey_id = { NID_authority_key_identifier, X509V3_EXT_MULTILINE, (X509V3_EXT_NEW)AUTHORITY_KEYID_new, AUTHORITY_KEYID_free, (X509V3_EXT_D2I)d2i_AUTHORITY_KEYID, i2d_AUTHORITY_KEYID, NULL, NULL, (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID, (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID, NULL,NULL, NULL }; int i2d_AUTHORITY_KEYID(AUTHORITY_KEYID *a, unsigned char **pp) { M_ASN1_I2D_vars(a); M_ASN1_I2D_len_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING); M_ASN1_I2D_len_IMP_opt (a->issuer, i2d_GENERAL_NAMES); M_ASN1_I2D_len_IMP_opt (a->serial, i2d_ASN1_INTEGER); M_ASN1_I2D_seq_total(); M_ASN1_I2D_put_IMP_opt (a->keyid, i2d_ASN1_OCTET_STRING, 0); M_ASN1_I2D_put_IMP_opt (a->issuer, i2d_GENERAL_NAMES, 1); M_ASN1_I2D_put_IMP_opt (a->serial, i2d_ASN1_INTEGER, 2); M_ASN1_I2D_finish(); } AUTHORITY_KEYID *AUTHORITY_KEYID_new(void) { AUTHORITY_KEYID *ret=NULL; ASN1_CTX c; M_ASN1_New_Malloc(ret, AUTHORITY_KEYID); ret->keyid = NULL; ret->issuer = NULL; ret->serial = NULL; return (ret); M_ASN1_New_Error(ASN1_F_AUTHORITY_KEYID_NEW); } AUTHORITY_KEYID *d2i_AUTHORITY_KEYID(AUTHORITY_KEYID **a, unsigned char **pp, long length) { M_ASN1_D2I_vars(a,AUTHORITY_KEYID *,AUTHORITY_KEYID_new); M_ASN1_D2I_Init(); M_ASN1_D2I_start_sequence(); M_ASN1_D2I_get_IMP_opt (ret->keyid, d2i_ASN1_OCTET_STRING, 0, V_ASN1_OCTET_STRING); M_ASN1_D2I_get_IMP_opt (ret->issuer, d2i_GENERAL_NAMES, 1, V_ASN1_SEQUENCE); M_ASN1_D2I_get_IMP_opt (ret->serial, d2i_ASN1_INTEGER, 2, V_ASN1_INTEGER); M_ASN1_D2I_Finish(a, AUTHORITY_KEYID_free, ASN1_F_D2I_AUTHORITY_KEYID); } void AUTHORITY_KEYID_free(AUTHORITY_KEYID *a) { if (a == NULL) return; ASN1_OCTET_STRING_free(a->keyid); sk_GENERAL_NAME_pop_free(a->issuer, GENERAL_NAME_free); ASN1_INTEGER_free (a->serial); Free ((char *)a); } static STACK *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, AUTHORITY_KEYID *akeyid, STACK *extlist) { char *tmp; if(akeyid->keyid) { tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); X509V3_add_value("keyid", tmp, &extlist); 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); 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 *values) { char keyid=0, issuer=0; int i; CONF_VALUE *cnf; ASN1_OCTET_STRING *ikeyid = NULL; X509_NAME *isname = NULL; STACK_OF(GENERAL_NAME) * gens = NULL; GENERAL_NAME *gen = NULL; ASN1_INTEGER *serial = NULL; X509_EXTENSION *ext; X509 *cert; AUTHORITY_KEYID *akeyid; for(i = 0; i < sk_num(values); i++) { cnf = (CONF_VALUE *)sk_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 = 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); ASN1_INTEGER_free(serial); ASN1_OCTET_STRING_free(ikeyid); return NULL; }