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- /*############################################################################
- # Copyright 2016 Intel Corporation
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- ############################################################################*/
- /*!
- * \file
- * \brief SigRl validity checking implementation.
- */
- #include <string.h>
- #include "epid/common/src/endian_convert.h"
- #include "epid/common/src/sigrlvalid.h"
- bool IsSigRlValid(GroupId const* gid, SigRl const* sig_rl, size_t sig_rl_size) {
- const size_t kMinSigRlSize = sizeof(SigRl) - sizeof(SigRlEntry);
- size_t input_sig_rl_size = 0;
- if (!gid || !sig_rl || kMinSigRlSize > sig_rl_size) {
- return false;
- }
- if (ntohl(sig_rl->n2) > (SIZE_MAX - kMinSigRlSize) / sizeof(sig_rl->bk[0])) {
- return false;
- }
- // sanity check of intput SigRl size
- input_sig_rl_size = kMinSigRlSize + ntohl(sig_rl->n2) * sizeof(sig_rl->bk[0]);
- if (input_sig_rl_size != sig_rl_size) {
- return false;
- }
- // verify that gid given and gid in SigRl match
- if (0 != memcmp(gid, &sig_rl->gid, sizeof(*gid))) {
- return false;
- }
- return true;
- }
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