| // 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/dilithium_verify_key_manager.h" |
| |
| #include "absl/memory/memory.h" |
| #include "absl/status/status.h" |
| #include "absl/strings/str_cat.h" |
| #include "absl/strings/string_view.h" |
| #include "tink/experimental/pqcrypto/signature/subtle/dilithium_avx2_verify.h" |
| #include "tink/experimental/pqcrypto/signature/subtle/dilithium_key.h" |
| #include "tink/experimental/pqcrypto/signature/util/enums.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" |
| |
| extern "C" { |
| #include "third_party/pqclean/crypto_sign/dilithium2/api.h" |
| #include "third_party/pqclean/crypto_sign/dilithium3/api.h" |
| #include "third_party/pqclean/crypto_sign/dilithium5/api.h" |
| } |
| |
| namespace crypto { |
| namespace tink { |
| |
| using ::crypto::tink::subtle::DilithiumPublicKeyPqclean; |
| using ::crypto::tink::util::Status; |
| using ::crypto::tink::util::StatusOr; |
| using ::google::crypto::tink::DilithiumParams; |
| using ::google::crypto::tink::DilithiumPublicKey; |
| using ::google::crypto::tink::DilithiumSeedExpansion; |
| using ::crypto::tink::util::EnumsPqcrypto; |
| |
| StatusOr<std::unique_ptr<PublicKeyVerify>> |
| DilithiumVerifyKeyManager::PublicKeyVerifyFactory::Create( |
| const DilithiumPublicKey& public_key) const { |
| util::StatusOr<DilithiumPublicKeyPqclean> dilithium_public_key = |
| DilithiumPublicKeyPqclean::NewPublicKey( |
| public_key.key_value(), |
| EnumsPqcrypto::ProtoToSubtle(public_key.params().seed_expansion())); |
| |
| if (!dilithium_public_key.ok()) return dilithium_public_key.status(); |
| |
| return subtle::DilithiumAvx2Verify::New(*dilithium_public_key); |
| } |
| |
| Status DilithiumVerifyKeyManager::ValidateKey( |
| const DilithiumPublicKey& key) const { |
| Status status = ValidateVersion(key.version(), get_version()); |
| if (!status.ok()) return status; |
| |
| if (key.key_value().length() != PQCLEAN_DILITHIUM2_CRYPTO_PUBLICKEYBYTES && |
| key.key_value().length() != PQCLEAN_DILITHIUM3_CRYPTO_PUBLICKEYBYTES && |
| key.key_value().length() != PQCLEAN_DILITHIUM5_CRYPTO_PUBLICKEYBYTES) { |
| return Status(absl::StatusCode::kInvalidArgument, |
| "Invalid dilithium public key size."); |
| } |
| return util::OkStatus(); |
| } |
| |
| Status DilithiumVerifyKeyManager::ValidateParams( |
| const DilithiumParams& params) const { |
| switch (params.seed_expansion()) { |
| case DilithiumSeedExpansion::SEED_EXPANSION_SHAKE: |
| case DilithiumSeedExpansion::SEED_EXPANSION_AES: { |
| break; |
| } |
| default: { |
| return Status(absl::StatusCode::kInvalidArgument, |
| "Invalid seed expansion"); |
| } |
| } |
| |
| switch (params.key_size()) { |
| case PQCLEAN_DILITHIUM2_CRYPTO_SECRETKEYBYTES: |
| case PQCLEAN_DILITHIUM3_CRYPTO_SECRETKEYBYTES: |
| case PQCLEAN_DILITHIUM5_CRYPTO_SECRETKEYBYTES: { |
| break; |
| } |
| default: { |
| return Status(absl::StatusCode::kInvalidArgument, "Invalid key size."); |
| } |
| } |
| |
| return util::OkStatus(); |
| } |
| |
| } // namespace tink |
| } // namespace crypto |