| // Copyright 2021 Google LLC |
| // |
| // 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. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "tink/experimental/pqcrypto/signature/falcon_verify_key_manager.h" |
| |
| #include "absl/memory/memory.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/strings/string_view.h" |
| #include "tink/experimental/pqcrypto/signature/subtle/falcon_subtle_utils.h" |
| #include "tink/experimental/pqcrypto/signature/subtle/falcon_verify.h" |
| #include "tink/public_key_verify.h" |
| #include "tink/util/errors.h" |
| #include "tink/util/input_stream_util.h" |
| #include "tink/util/protobuf_helper.h" |
| #include "tink/util/secret_data.h" |
| #include "tink/util/status.h" |
| #include "tink/util/statusor.h" |
| #include "tink/util/validation.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| using ::crypto::tink::subtle::FalconPublicKeyPqclean; |
| using ::crypto::tink::util::Status; |
| using ::crypto::tink::util::StatusOr; |
| using ::google::crypto::tink::FalconPublicKey; |
| |
| StatusOr<std::unique_ptr<PublicKeyVerify>> |
| FalconVerifyKeyManager::PublicKeyVerifyFactory::Create( |
| const FalconPublicKey& public_key) const { |
| StatusOr<FalconPublicKeyPqclean> falcon_public_key_pqclean = |
| FalconPublicKeyPqclean::NewPublicKey(public_key.key_value()); |
| |
| if (!falcon_public_key_pqclean.ok()) { |
| return falcon_public_key_pqclean.status(); |
| } |
| |
| return subtle::FalconVerify::New(*falcon_public_key_pqclean); |
| } |
| |
| Status FalconVerifyKeyManager::ValidateKey(const FalconPublicKey& key) const { |
| Status status = ValidateVersion(key.version(), get_version()); |
| if (!status.ok()) { |
| return status; |
| } |
| |
| status = subtle::ValidateFalconPublicKeySize(key.key_value().length()); |
| if (!status.ok()) { |
| return status; |
| } |
| |
| return util::OkStatus(); |
| } |
| |
| } // namespace tink |
| } // namespace crypto |