| // 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/hybrid/internal/hpke_key_manager_util.h" |
| |
| #include "absl/status/status.h" |
| #include "tink/util/status.h" |
| #include "tink/util/validation.h" |
| #include "proto/hpke.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace internal { |
| |
| using ::google::crypto::tink::HpkeAead; |
| using ::google::crypto::tink::HpkeKdf; |
| using ::google::crypto::tink::HpkeKem; |
| using ::google::crypto::tink::HpkeParams; |
| using ::google::crypto::tink::HpkePublicKey; |
| |
| util::Status ValidateParams(const HpkeParams& params) { |
| if (params.kem() == HpkeKem::KEM_UNKNOWN) { |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "Invalid KEM param."); |
| } |
| if (params.kdf() == HpkeKdf::KDF_UNKNOWN) { |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "Invalid KDF param."); |
| } |
| if (params.aead() == HpkeAead::AEAD_UNKNOWN) { |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "Invalid AEAD param."); |
| } |
| return util::OkStatus(); |
| } |
| |
| util::Status ValidateKeyAndVersion(const HpkePublicKey& key, |
| uint32_t max_key_version) { |
| util::Status status = ValidateVersion(key.version(), max_key_version); |
| if (!status.ok()) return status; |
| if (!key.has_params()) { |
| return util::Status(absl::StatusCode::kInvalidArgument, |
| "Missing HPKE key params."); |
| } |
| return ValidateParams(key.params()); |
| } |
| |
| } // namespace internal |
| } // namespace tink |
| } // namespace crypto |