400 lines
10 KiB
C
Executable file
400 lines
10 KiB
C
Executable file
/* $OpenBSD: x509_cmp.c,v 1.39 2022/02/24 22:05:06 beck 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 <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/opensslconf.h>
|
|
|
|
#include <openssl/asn1.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/x509v3.h>
|
|
|
|
#include "evp_locl.h"
|
|
#include "x509_lcl.h"
|
|
|
|
int
|
|
X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
|
|
{
|
|
int i;
|
|
X509_CINF *ai, *bi;
|
|
|
|
ai = a->cert_info;
|
|
bi = b->cert_info;
|
|
i = ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber);
|
|
if (i)
|
|
return (i);
|
|
return (X509_NAME_cmp(ai->issuer, bi->issuer));
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_MD5
|
|
unsigned long
|
|
X509_issuer_and_serial_hash(X509 *a)
|
|
{
|
|
unsigned long ret = 0;
|
|
EVP_MD_CTX ctx;
|
|
unsigned char md[16];
|
|
char *f;
|
|
|
|
EVP_MD_CTX_init(&ctx);
|
|
f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
|
|
if (f == NULL)
|
|
goto err;
|
|
if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
|
|
goto err;
|
|
if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
|
|
goto err;
|
|
free(f);
|
|
f = NULL;
|
|
if (!EVP_DigestUpdate(&ctx,
|
|
(unsigned char *)a->cert_info->serialNumber->data,
|
|
(unsigned long)a->cert_info->serialNumber->length))
|
|
goto err;
|
|
if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
|
|
goto err;
|
|
ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
|
|
((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)) &
|
|
0xffffffffL;
|
|
|
|
err:
|
|
EVP_MD_CTX_cleanup(&ctx);
|
|
free(f);
|
|
return (ret);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
X509_issuer_name_cmp(const X509 *a, const X509 *b)
|
|
{
|
|
return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
|
|
}
|
|
|
|
int
|
|
X509_subject_name_cmp(const X509 *a, const X509 *b)
|
|
{
|
|
return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
|
|
}
|
|
|
|
int
|
|
X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
|
|
{
|
|
return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_SHA
|
|
int
|
|
X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
|
|
{
|
|
return memcmp(a->hash, b->hash, X509_CRL_HASH_LEN);
|
|
}
|
|
#endif
|
|
|
|
X509_NAME *
|
|
X509_get_issuer_name(const X509 *a)
|
|
{
|
|
return (a->cert_info->issuer);
|
|
}
|
|
|
|
unsigned long
|
|
X509_issuer_name_hash(X509 *x)
|
|
{
|
|
return (X509_NAME_hash(x->cert_info->issuer));
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_MD5
|
|
unsigned long
|
|
X509_issuer_name_hash_old(X509 *x)
|
|
{
|
|
return (X509_NAME_hash_old(x->cert_info->issuer));
|
|
}
|
|
#endif
|
|
|
|
X509_NAME *
|
|
X509_get_subject_name(const X509 *a)
|
|
{
|
|
return (a->cert_info->subject);
|
|
}
|
|
|
|
ASN1_INTEGER *
|
|
X509_get_serialNumber(X509 *a)
|
|
{
|
|
return (a->cert_info->serialNumber);
|
|
}
|
|
|
|
const ASN1_INTEGER *
|
|
X509_get0_serialNumber(const X509 *a)
|
|
{
|
|
return (a->cert_info->serialNumber);
|
|
}
|
|
|
|
unsigned long
|
|
X509_subject_name_hash(X509 *x)
|
|
{
|
|
return (X509_NAME_hash(x->cert_info->subject));
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_MD5
|
|
unsigned long
|
|
X509_subject_name_hash_old(X509 *x)
|
|
{
|
|
return (X509_NAME_hash_old(x->cert_info->subject));
|
|
}
|
|
#endif
|
|
|
|
#ifndef OPENSSL_NO_SHA
|
|
/* Compare two certificates: they must be identical for
|
|
* this to work. NB: Although "cmp" operations are generally
|
|
* prototyped to take "const" arguments (eg. for use in
|
|
* STACKs), the way X509 handling is - these operations may
|
|
* involve ensuring the hashes are up-to-date and ensuring
|
|
* certain cert information is cached. So this is the point
|
|
* where the "depth-first" constification tree has to halt
|
|
* with an evil cast.
|
|
*/
|
|
int
|
|
X509_cmp(const X509 *a, const X509 *b)
|
|
{
|
|
/* ensure hash is valid */
|
|
X509_check_purpose((X509 *)a, -1, 0);
|
|
X509_check_purpose((X509 *)b, -1, 0);
|
|
|
|
return memcmp(a->hash, b->hash, X509_CERT_HASH_LEN);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
|
|
{
|
|
int ret;
|
|
|
|
/* Ensure canonical encoding is present and up to date */
|
|
if (!a->canon_enc || a->modified) {
|
|
ret = i2d_X509_NAME((X509_NAME *)a, NULL);
|
|
if (ret < 0)
|
|
return -2;
|
|
}
|
|
if (!b->canon_enc || b->modified) {
|
|
ret = i2d_X509_NAME((X509_NAME *)b, NULL);
|
|
if (ret < 0)
|
|
return -2;
|
|
}
|
|
ret = a->canon_enclen - b->canon_enclen;
|
|
if (ret)
|
|
return ret;
|
|
return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
|
|
}
|
|
|
|
unsigned long
|
|
X509_NAME_hash(X509_NAME *x)
|
|
{
|
|
unsigned long ret = 0;
|
|
unsigned char md[SHA_DIGEST_LENGTH];
|
|
|
|
/* Make sure X509_NAME structure contains valid cached encoding */
|
|
i2d_X509_NAME(x, NULL);
|
|
if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
|
|
NULL))
|
|
return 0;
|
|
|
|
ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
|
|
((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)) &
|
|
0xffffffffL;
|
|
return (ret);
|
|
}
|
|
|
|
|
|
#ifndef OPENSSL_NO_MD5
|
|
/* I now DER encode the name and hash it. Since I cache the DER encoding,
|
|
* this is reasonably efficient. */
|
|
|
|
unsigned long
|
|
X509_NAME_hash_old(X509_NAME *x)
|
|
{
|
|
EVP_MD_CTX md_ctx;
|
|
unsigned long ret = 0;
|
|
unsigned char md[16];
|
|
|
|
/* Make sure X509_NAME structure contains valid cached encoding */
|
|
i2d_X509_NAME(x, NULL);
|
|
EVP_MD_CTX_init(&md_ctx);
|
|
if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) &&
|
|
EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) &&
|
|
EVP_DigestFinal_ex(&md_ctx, md, NULL))
|
|
ret = (((unsigned long)md[0]) |
|
|
((unsigned long)md[1] << 8L) |
|
|
((unsigned long)md[2] << 16L) |
|
|
((unsigned long)md[3] << 24L)) &
|
|
0xffffffffL;
|
|
EVP_MD_CTX_cleanup(&md_ctx);
|
|
|
|
return (ret);
|
|
}
|
|
#endif
|
|
|
|
/* Search a stack of X509 for a match */
|
|
X509 *
|
|
X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
|
|
ASN1_INTEGER *serial)
|
|
{
|
|
int i;
|
|
X509_CINF cinf;
|
|
X509 x, *x509 = NULL;
|
|
|
|
if (!sk)
|
|
return NULL;
|
|
|
|
x.cert_info = &cinf;
|
|
cinf.serialNumber = serial;
|
|
cinf.issuer = name;
|
|
|
|
for (i = 0; i < sk_X509_num(sk); i++) {
|
|
x509 = sk_X509_value(sk, i);
|
|
if (X509_issuer_and_serial_cmp(x509, &x) == 0)
|
|
return (x509);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
X509 *
|
|
X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
|
|
{
|
|
X509 *x509;
|
|
int i;
|
|
|
|
for (i = 0; i < sk_X509_num(sk); i++) {
|
|
x509 = sk_X509_value(sk, i);
|
|
if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
|
|
return (x509);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
EVP_PKEY *
|
|
X509_get_pubkey(X509 *x)
|
|
{
|
|
if (x == NULL || x->cert_info == NULL)
|
|
return (NULL);
|
|
return (X509_PUBKEY_get(x->cert_info->key));
|
|
}
|
|
|
|
EVP_PKEY *
|
|
X509_get0_pubkey(const X509 *x)
|
|
{
|
|
if (x == NULL || x->cert_info == NULL)
|
|
return (NULL);
|
|
return (X509_PUBKEY_get0(x->cert_info->key));
|
|
}
|
|
|
|
ASN1_BIT_STRING *
|
|
X509_get0_pubkey_bitstr(const X509 *x)
|
|
{
|
|
if (!x)
|
|
return NULL;
|
|
return x->cert_info->key->public_key;
|
|
}
|
|
|
|
int
|
|
X509_check_private_key(const X509 *x, const EVP_PKEY *k)
|
|
{
|
|
const EVP_PKEY *xk;
|
|
int ret;
|
|
|
|
xk = X509_get0_pubkey(x);
|
|
|
|
if (xk)
|
|
ret = EVP_PKEY_cmp(xk, k);
|
|
else
|
|
ret = -2;
|
|
|
|
switch (ret) {
|
|
case 1:
|
|
break;
|
|
case 0:
|
|
X509error(X509_R_KEY_VALUES_MISMATCH);
|
|
break;
|
|
case -1:
|
|
X509error(X509_R_KEY_TYPE_MISMATCH);
|
|
break;
|
|
case -2:
|
|
X509error(X509_R_UNKNOWN_KEY_TYPE);
|
|
}
|
|
if (ret > 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Not strictly speaking an "up_ref" as a STACK doesn't have a reference
|
|
* count but it has the same effect by duping the STACK and upping the ref of
|
|
* each X509 structure.
|
|
*/
|
|
STACK_OF(X509) *
|
|
X509_chain_up_ref(STACK_OF(X509) *chain)
|
|
{
|
|
STACK_OF(X509) *ret;
|
|
size_t i;
|
|
|
|
ret = sk_X509_dup(chain);
|
|
for (i = 0; i < sk_X509_num(ret); i++)
|
|
X509_up_ref(sk_X509_value(ret, i));
|
|
|
|
return ret;
|
|
}
|