-/* crypto/ts/ts_resp_verify.c */
/*
- * Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL project
- * 2002.
- */
-/* ====================================================================
- * Copyright (c) 2006 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).
+ * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
PKCS7 *token, TS_TST_INFO *tst_info);
static int ts_check_status_info(TS_RESP *response);
static char *ts_get_status_text(STACK_OF(ASN1_UTF8STRING) *text);
-static int ts_check_policy(ASN1_OBJECT *req_oid, TS_TST_INFO *tst_info);
+static int ts_check_policy(const ASN1_OBJECT *req_oid,
+ const TS_TST_INFO *tst_info);
static int ts_compute_imprint(BIO *data, TS_TST_INFO *tst_info,
X509_ALGOR **md_alg,
unsigned char **imprint, unsigned *imprint_len);
static int ts_check_imprints(X509_ALGOR *algor_a,
- unsigned char *imprint_a, unsigned len_a,
+ const unsigned char *imprint_a, unsigned len_a,
TS_TST_INFO *tst_info);
static int ts_check_nonces(const ASN1_INTEGER *a, TS_TST_INFO *tst_info);
static int ts_check_signer_name(GENERAL_NAME *tsa_name, X509 *signer);
static int ts_find_name(STACK_OF(GENERAL_NAME) *gen_names,
GENERAL_NAME *name);
+static int ts_find_cert_v2(STACK_OF(ESS_CERT_ID_V2) *cert_ids, X509 *cert);
+static ESS_SIGNING_CERT_V2 *ess_get_signing_cert_v2(PKCS7_SIGNER_INFO *si);
/*
* This must be large enough to hold all values in ts_status_text (with
static int ts_verify_cert(X509_STORE *store, STACK_OF(X509) *untrusted,
X509 *signer, STACK_OF(X509) **chain)
{
- X509_STORE_CTX cert_ctx;
+ X509_STORE_CTX *cert_ctx = NULL;
int i;
- int ret = 1;
+ int ret = 0;
*chain = NULL;
- X509_STORE_CTX_init(&cert_ctx, store, signer, untrusted);
- X509_STORE_CTX_set_purpose(&cert_ctx, X509_PURPOSE_TIMESTAMP_SIGN);
- i = X509_verify_cert(&cert_ctx);
+ cert_ctx = X509_STORE_CTX_new();
+ if (cert_ctx == NULL) {
+ TSerr(TS_F_TS_VERIFY_CERT, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!X509_STORE_CTX_init(cert_ctx, store, signer, untrusted))
+ goto end;
+ X509_STORE_CTX_set_purpose(cert_ctx, X509_PURPOSE_TIMESTAMP_SIGN);
+ i = X509_verify_cert(cert_ctx);
if (i <= 0) {
- int j = X509_STORE_CTX_get_error(&cert_ctx);
+ int j = X509_STORE_CTX_get_error(cert_ctx);
TSerr(TS_F_TS_VERIFY_CERT, TS_R_CERTIFICATE_VERIFY_ERROR);
ERR_add_error_data(2, "Verify error:",
X509_verify_cert_error_string(j));
- ret = 0;
- } else {
- *chain = X509_STORE_CTX_get1_chain(&cert_ctx);
+ goto err;
}
+ *chain = X509_STORE_CTX_get1_chain(cert_ctx);
+ ret = 1;
+ goto end;
- X509_STORE_CTX_cleanup(&cert_ctx);
+err:
+ ret = 0;
+end:
+ X509_STORE_CTX_free(cert_ctx);
return ret;
}
{
ESS_SIGNING_CERT *ss = ess_get_signing_cert(si);
STACK_OF(ESS_CERT_ID) *cert_ids = NULL;
+ ESS_SIGNING_CERT_V2 *ssv2 = ess_get_signing_cert_v2(si);
+ STACK_OF(ESS_CERT_ID_V2) *cert_ids_v2 = NULL;
X509 *cert;
int i = 0;
int ret = 0;
- if (!ss)
- goto err;
- cert_ids = ss->cert_ids;
- cert = sk_X509_value(chain, 0);
- if (ts_find_cert(cert_ids, cert) != 0)
- goto err;
+ if (ss != NULL) {
+ cert_ids = ss->cert_ids;
+ cert = sk_X509_value(chain, 0);
+ if (ts_find_cert(cert_ids, cert) != 0)
+ goto err;
- /*
- * Check the other certificates of the chain if there are more than one
- * certificate ids in cert_ids.
- */
- if (sk_ESS_CERT_ID_num(cert_ids) > 1) {
- for (i = 1; i < sk_X509_num(chain); ++i) {
- cert = sk_X509_value(chain, i);
- if (ts_find_cert(cert_ids, cert) < 0)
- goto err;
+ /*
+ * Check the other certificates of the chain if there are more than one
+ * certificate ids in cert_ids.
+ */
+ if (sk_ESS_CERT_ID_num(cert_ids) > 1) {
+ for (i = 1; i < sk_X509_num(chain); ++i) {
+ cert = sk_X509_value(chain, i);
+ if (ts_find_cert(cert_ids, cert) < 0)
+ goto err;
+ }
}
+ } else if (ssv2 != NULL) {
+ cert_ids_v2 = ssv2->cert_ids;
+ cert = sk_X509_value(chain, 0);
+ if (ts_find_cert_v2(cert_ids_v2, cert) != 0)
+ goto err;
+
+ /*
+ * Check the other certificates of the chain if there are more than one
+ * certificate ids in cert_ids.
+ */
+ if (sk_ESS_CERT_ID_V2_num(cert_ids_v2) > 1) {
+ for (i = 1; i < sk_X509_num(chain); ++i) {
+ cert = sk_X509_value(chain, i);
+ if (ts_find_cert_v2(cert_ids_v2, cert) < 0)
+ goto err;
+ }
+ }
+ } else {
+ goto err;
}
+
ret = 1;
err:
if (!ret)
TSerr(TS_F_TS_CHECK_SIGNING_CERTS,
TS_R_ESS_SIGNING_CERTIFICATE_ERROR);
ESS_SIGNING_CERT_free(ss);
+ ESS_SIGNING_CERT_V2_free(ssv2);
return ret;
}
return d2i_ESS_SIGNING_CERT(NULL, &p, attr->value.sequence->length);
}
+static ESS_SIGNING_CERT_V2 *ess_get_signing_cert_v2(PKCS7_SIGNER_INFO *si)
+{
+ ASN1_TYPE *attr;
+ const unsigned char *p;
+
+ attr = PKCS7_get_signed_attribute(si, NID_id_smime_aa_signingCertificateV2);
+ if (attr == NULL)
+ return NULL;
+ p = attr->value.sequence->data;
+ return d2i_ESS_SIGNING_CERT_V2(NULL, &p, attr->value.sequence->length);
+}
+
/* Returns < 0 if certificate is not found, certificate index otherwise. */
static int ts_find_cert(STACK_OF(ESS_CERT_ID) *cert_ids, X509 *cert)
{
return -1;
}
+/* Returns < 0 if certificate is not found, certificate index otherwise. */
+static int ts_find_cert_v2(STACK_OF(ESS_CERT_ID_V2) *cert_ids, X509 *cert)
+{
+ int i;
+ unsigned char cert_digest[EVP_MAX_MD_SIZE];
+ unsigned int len;
+
+ /* Look for cert in the cert_ids vector. */
+ for (i = 0; i < sk_ESS_CERT_ID_V2_num(cert_ids); ++i) {
+ ESS_CERT_ID_V2 *cid = sk_ESS_CERT_ID_V2_value(cert_ids, i);
+ const EVP_MD *md;
+
+ if (cid->hash_alg != NULL)
+ md = EVP_get_digestbyobj(cid->hash_alg->algorithm);
+ else
+ md = EVP_sha256();
+
+ X509_digest(cert, md, cert_digest, &len);
+ if (cid->hash->length != (int)len)
+ return -1;
+
+ if (memcmp(cid->hash->data, cert_digest, cid->hash->length) == 0) {
+ ESS_ISSUER_SERIAL *is = cid->issuer_serial;
+
+ if (is == NULL || !ts_issuer_serial_cmp(is, cert))
+ return i;
+ }
+ }
+
+ return -1;
+}
+
static int ts_issuer_serial_cmp(ESS_ISSUER_SERIAL *is, X509 *cert)
{
GENERAL_NAME *issuer;
unsigned char *imprint = NULL;
unsigned imprint_len = 0;
int ret = 0;
+ int flags = ctx->flags;
- if ((ctx->flags & TS_VFY_SIGNATURE)
+ /* Some options require us to also check the signature */
+ if (((flags & TS_VFY_SIGNER) && tsa_name != NULL)
+ || (flags & TS_VFY_TSA_NAME)) {
+ flags |= TS_VFY_SIGNATURE;
+ }
+
+ if ((flags & TS_VFY_SIGNATURE)
&& !TS_RESP_verify_signature(token, ctx->certs, ctx->store, &signer))
goto err;
- if ((ctx->flags & TS_VFY_VERSION)
+ if ((flags & TS_VFY_VERSION)
&& TS_TST_INFO_get_version(tst_info) != 1) {
TSerr(TS_F_INT_TS_RESP_VERIFY_TOKEN, TS_R_UNSUPPORTED_VERSION);
goto err;
}
- if ((ctx->flags & TS_VFY_POLICY)
+ if ((flags & TS_VFY_POLICY)
&& !ts_check_policy(ctx->policy, tst_info))
goto err;
- if ((ctx->flags & TS_VFY_IMPRINT)
+ if ((flags & TS_VFY_IMPRINT)
&& !ts_check_imprints(ctx->md_alg, ctx->imprint, ctx->imprint_len,
tst_info))
goto err;
- if ((ctx->flags & TS_VFY_DATA)
+ if ((flags & TS_VFY_DATA)
&& (!ts_compute_imprint(ctx->data, tst_info,
&md_alg, &imprint, &imprint_len)
|| !ts_check_imprints(md_alg, imprint, imprint_len, tst_info)))
goto err;
- if ((ctx->flags & TS_VFY_NONCE)
+ if ((flags & TS_VFY_NONCE)
&& !ts_check_nonces(ctx->nonce, tst_info))
goto err;
- if ((ctx->flags & TS_VFY_SIGNER)
+ if ((flags & TS_VFY_SIGNER)
&& tsa_name && !ts_check_signer_name(tsa_name, signer)) {
TSerr(TS_F_INT_TS_RESP_VERIFY_TOKEN, TS_R_TSA_NAME_MISMATCH);
goto err;
}
- if ((ctx->flags & TS_VFY_TSA_NAME)
+ if ((flags & TS_VFY_TSA_NAME)
&& !ts_check_signer_name(ctx->tsa_name, signer)) {
TSerr(TS_F_INT_TS_RESP_VERIFY_TOKEN, TS_R_TSA_UNTRUSTED);
goto err;
static char *ts_get_status_text(STACK_OF(ASN1_UTF8STRING) *text)
{
int i;
- unsigned int length = 0;
+ int length = 0;
char *result = NULL;
char *p;
for (i = 0; i < sk_ASN1_UTF8STRING_num(text); ++i) {
ASN1_UTF8STRING *current = sk_ASN1_UTF8STRING_value(text, i);
+ if (ASN1_STRING_length(current) > TS_MAX_STATUS_LENGTH - length - 1)
+ return NULL;
length += ASN1_STRING_length(current);
length += 1; /* separator character */
}
TSerr(TS_F_TS_GET_STATUS_TEXT, ERR_R_MALLOC_FAILURE);
return NULL;
}
-
+
for (i = 0, p = result; i < sk_ASN1_UTF8STRING_num(text); ++i) {
ASN1_UTF8STRING *current = sk_ASN1_UTF8STRING_value(text, i);
length = ASN1_STRING_length(current);
if (i > 0)
*p++ = '/';
- strncpy(p, (const char *)ASN1_STRING_data(current), length);
+ strncpy(p, (const char *)ASN1_STRING_get0_data(current), length);
p += length;
}
*p = '\0';
return result;
}
-static int ts_check_policy(ASN1_OBJECT *req_oid, TS_TST_INFO *tst_info)
+static int ts_check_policy(const ASN1_OBJECT *req_oid,
+ const TS_TST_INFO *tst_info)
{
- ASN1_OBJECT *resp_oid = tst_info->policy_id;
+ const ASN1_OBJECT *resp_oid = tst_info->policy_id;
if (OBJ_cmp(req_oid, resp_oid) != 0) {
TSerr(TS_F_TS_CHECK_POLICY, TS_R_POLICY_MISMATCH);
}
static int ts_check_imprints(X509_ALGOR *algor_a,
- unsigned char *imprint_a, unsigned len_a,
+ const unsigned char *imprint_a, unsigned len_a,
TS_TST_INFO *tst_info)
{
TS_MSG_IMPRINT *b = tst_info->msg_imprint;
}
ret = len_a == (unsigned)ASN1_STRING_length(b->hashed_msg) &&
- memcmp(imprint_a, ASN1_STRING_data(b->hashed_msg), len_a) == 0;
+ memcmp(imprint_a, ASN1_STRING_get0_data(b->hashed_msg), len_a) == 0;
err:
if (!ret)
TSerr(TS_F_TS_CHECK_IMPRINTS, TS_R_MESSAGE_IMPRINT_MISMATCH);
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