/* $OpenBSD: x509_req.c,v 1.21 2018/05/13 06:48:00 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * 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 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 acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS 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 AUTHOR OR 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. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include <stdio.h> #include <openssl/opensslconf.h> #include <openssl/asn1.h> #include <openssl/asn1t.h> #include <openssl/bn.h> #include <openssl/buffer.h> #include <openssl/err.h> #include <openssl/evp.h> #include <openssl/objects.h> #include <openssl/pem.h> #include <openssl/x509.h> X509_REQ * X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) { X509_REQ *ret; X509_REQ_INFO *ri; int i; EVP_PKEY *pktmp; ret = X509_REQ_new(); if (ret == NULL) { X509error(ERR_R_MALLOC_FAILURE); goto err; } ri = ret->req_info; if ((ri->version = ASN1_INTEGER_new()) == NULL) goto err; if (ASN1_INTEGER_set(ri->version, 0) == 0) goto err; if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x))) goto err; if ((pktmp = X509_get_pubkey(x)) == NULL) goto err; i = X509_REQ_set_pubkey(ret, pktmp); EVP_PKEY_free(pktmp); if (!i) goto err; if (pkey != NULL) { if (!X509_REQ_sign(ret, pkey, md)) goto err; } return (ret); err: X509_REQ_free(ret); return (NULL); } EVP_PKEY * X509_REQ_get_pubkey(X509_REQ *req) { if ((req == NULL) || (req->req_info == NULL)) return (NULL); return (X509_PUBKEY_get(req->req_info->pubkey)); } int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k) { EVP_PKEY *xk = NULL; int ok = 0; xk = X509_REQ_get_pubkey(x); switch (EVP_PKEY_cmp(xk, k)) { case 1: ok = 1; break; case 0: X509error(X509_R_KEY_VALUES_MISMATCH); break; case -1: X509error(X509_R_KEY_TYPE_MISMATCH); break; case -2: #ifndef OPENSSL_NO_EC if (k->type == EVP_PKEY_EC) { X509error(ERR_R_EC_LIB); break; } #endif #ifndef OPENSSL_NO_DH if (k->type == EVP_PKEY_DH) { /* No idea */ X509error(X509_R_CANT_CHECK_DH_KEY); break; } #endif X509error(X509_R_UNKNOWN_KEY_TYPE); } EVP_PKEY_free(xk); return (ok); } /* It seems several organisations had the same idea of including a list of * extensions in a certificate request. There are at least two OIDs that are * used and there may be more: so the list is configurable. */ static int ext_nid_list[] = {NID_ext_req, NID_ms_ext_req, NID_undef}; static int *ext_nids = ext_nid_list; int X509_REQ_extension_nid(int req_nid) { int i, nid; for (i = 0; ; i++) { nid = ext_nids[i]; if (nid == NID_undef) return 0; else if (req_nid == nid) return 1; } } int * X509_REQ_get_extension_nids(void) { return ext_nids; } void X509_REQ_set_extension_nids(int *nids) { ext_nids = nids; } STACK_OF(X509_EXTENSION) * X509_REQ_get_extensions(X509_REQ *req) { X509_ATTRIBUTE *attr; ASN1_TYPE *ext = NULL; int idx, *pnid; const unsigned char *p; if ((req == NULL) || (req->req_info == NULL) || !ext_nids) return (NULL); for (pnid = ext_nids; *pnid != NID_undef; pnid++) { idx = X509_REQ_get_attr_by_NID(req, *pnid, -1); if (idx == -1) continue; attr = X509_REQ_get_attr(req, idx); if (attr->single) ext = attr->value.single; else if (sk_ASN1_TYPE_num(attr->value.set)) ext = sk_ASN1_TYPE_value(attr->value.set, 0); break; } if (!ext || (ext->type != V_ASN1_SEQUENCE)) return NULL; p = ext->value.sequence->data; return (STACK_OF(X509_EXTENSION) *)ASN1_item_d2i(NULL, &p, ext->value.sequence->length, &X509_EXTENSIONS_it); } /* Add a STACK_OF extensions to a certificate request: allow alternative OIDs * in case we want to create a non standard one. */ int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts, int nid) { ASN1_TYPE *at = NULL; X509_ATTRIBUTE *attr = NULL; if (!(at = ASN1_TYPE_new()) || !(at->value.sequence = ASN1_STRING_new())) goto err; at->type = V_ASN1_SEQUENCE; /* Generate encoding of extensions */ at->value.sequence->length = ASN1_item_i2d((ASN1_VALUE *)exts, &at->value.sequence->data, &X509_EXTENSIONS_it); if (!(attr = X509_ATTRIBUTE_new())) goto err; if (!(attr->value.set = sk_ASN1_TYPE_new_null())) goto err; if (!sk_ASN1_TYPE_push(attr->value.set, at)) goto err; at = NULL; attr->single = 0; attr->object = OBJ_nid2obj(nid); if (!req->req_info->attributes) { if (!(req->req_info->attributes = sk_X509_ATTRIBUTE_new_null())) goto err; } if (!sk_X509_ATTRIBUTE_push(req->req_info->attributes, attr)) goto err; return 1; err: X509_ATTRIBUTE_free(attr); ASN1_TYPE_free(at); return 0; } /* This is the normal usage: use the "official" OID */ int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts) { return X509_REQ_add_extensions_nid(req, exts, NID_ext_req); } /* Request attribute functions */ int X509_REQ_get_attr_count(const X509_REQ *req) { return X509at_get_attr_count(req->req_info->attributes); } int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos) { return X509at_get_attr_by_NID(req->req_info->attributes, nid, lastpos); } int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj, int lastpos) { return X509at_get_attr_by_OBJ(req->req_info->attributes, obj, lastpos); } X509_ATTRIBUTE * X509_REQ_get_attr(const X509_REQ *req, int loc) { return X509at_get_attr(req->req_info->attributes, loc); } X509_ATTRIBUTE * X509_REQ_delete_attr(X509_REQ *req, int loc) { return X509at_delete_attr(req->req_info->attributes, loc); } int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr) { if (X509at_add1_attr(&req->req_info->attributes, attr)) return 1; return 0; } int X509_REQ_add1_attr_by_OBJ(X509_REQ *req, const ASN1_OBJECT *obj, int type, const unsigned char *bytes, int len) { if (X509at_add1_attr_by_OBJ(&req->req_info->attributes, obj, type, bytes, len)) return 1; return 0; } int X509_REQ_add1_attr_by_NID(X509_REQ *req, int nid, int type, const unsigned char *bytes, int len) { if (X509at_add1_attr_by_NID(&req->req_info->attributes, nid, type, bytes, len)) return 1; return 0; } int X509_REQ_add1_attr_by_txt(X509_REQ *req, const char *attrname, int type, const unsigned char *bytes, int len) { if (X509at_add1_attr_by_txt(&req->req_info->attributes, attrname, type, bytes, len)) return 1; return 0; }