| // 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/jwt/internal/raw_jwt_ecdsa_sign_key_manager.h" |
| |
| #include <string> |
| #include <utility> |
| |
| #include "absl/memory/memory.h" |
| #include "absl/strings/string_view.h" |
| #include "tink/internal/ec_util.h" |
| #include "tink/jwt/internal/raw_jwt_ecdsa_verify_key_manager.h" |
| #include "tink/public_key_sign.h" |
| #include "tink/subtle/ecdsa_sign_boringssl.h" |
| #include "tink/util/enums.h" |
| #include "tink/util/errors.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" |
| #include "proto/jwt_ecdsa.pb.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace jwt_internal { |
| |
| using crypto::tink::util::Enums; |
| using crypto::tink::util::Status; |
| using crypto::tink::util::StatusOr; |
| using google::crypto::tink::JwtEcdsaKeyFormat; |
| using google::crypto::tink::JwtEcdsaPrivateKey; |
| using google::crypto::tink::JwtEcdsaPublicKey; |
| |
| StatusOr<JwtEcdsaPrivateKey> RawJwtEcdsaSignKeyManager::CreateKey( |
| const JwtEcdsaKeyFormat& jwt_ecdsa_key_format) const { |
| // Generate new EC key. |
| util::StatusOr<google::crypto::tink::EllipticCurveType> curve = |
| RawJwtEcdsaVerifyKeyManager::CurveForEcdsaAlgorithm( |
| jwt_ecdsa_key_format.algorithm()); |
| if (!curve.ok()) { |
| return curve.status(); |
| } |
| |
| util::StatusOr<internal::EcKey> ec_key = |
| internal::NewEcKey(util::Enums::ProtoToSubtle(*curve)); |
| if (!ec_key.ok()) return ec_key.status(); |
| |
| // Build EcdsaPrivateKey. |
| JwtEcdsaPrivateKey jwt_ecdsa_private_key; |
| jwt_ecdsa_private_key.set_version(get_version()); |
| jwt_ecdsa_private_key.set_key_value( |
| std::string(util::SecretDataAsStringView(ec_key->priv))); |
| auto jwt_ecdsa_public_key = jwt_ecdsa_private_key.mutable_public_key(); |
| jwt_ecdsa_public_key->set_version(get_version()); |
| jwt_ecdsa_public_key->set_x(ec_key->pub_x); |
| jwt_ecdsa_public_key->set_y(ec_key->pub_y); |
| jwt_ecdsa_public_key->set_algorithm(jwt_ecdsa_key_format.algorithm()); |
| return jwt_ecdsa_private_key; |
| } |
| |
| StatusOr<std::unique_ptr<PublicKeySign>> |
| RawJwtEcdsaSignKeyManager::PublicKeySignFactory::Create( |
| const JwtEcdsaPrivateKey& jwt_ecdsa_private_key) const { |
| const JwtEcdsaPublicKey& public_key = jwt_ecdsa_private_key.public_key(); |
| internal::EcKey ec_key; |
| util::StatusOr<google::crypto::tink::EllipticCurveType> curve = |
| RawJwtEcdsaVerifyKeyManager::CurveForEcdsaAlgorithm( |
| public_key.algorithm()); |
| if (!curve.ok()) { |
| return curve.status(); |
| } |
| ec_key.curve = Enums::ProtoToSubtle(*curve); |
| ec_key.pub_x = public_key.x(); |
| ec_key.pub_y = public_key.y(); |
| ec_key.priv = |
| util::SecretDataFromStringView(jwt_ecdsa_private_key.key_value()); |
| util::StatusOr<google::crypto::tink::HashType> hash_type = |
| RawJwtEcdsaVerifyKeyManager::HashForEcdsaAlgorithm( |
| public_key.algorithm()); |
| if (!hash_type.ok()) { |
| return hash_type.status(); |
| } |
| auto result = subtle::EcdsaSignBoringSsl::New( |
| ec_key, Enums::ProtoToSubtle(*hash_type), |
| subtle::EcdsaSignatureEncoding::IEEE_P1363); |
| if (!result.ok()) return result.status(); |
| return {*std::move(result)}; |
| } |
| |
| Status RawJwtEcdsaSignKeyManager::ValidateKey( |
| const JwtEcdsaPrivateKey& key) const { |
| Status status = ValidateVersion(key.version(), get_version()); |
| if (!status.ok()) return status; |
| return RawJwtEcdsaVerifyKeyManager().ValidateKey(key.public_key()); |
| } |
| |
| Status RawJwtEcdsaSignKeyManager::ValidateKeyFormat( |
| const JwtEcdsaKeyFormat& key_format) const { |
| return RawJwtEcdsaVerifyKeyManager::ValidateAlgorithm(key_format.algorithm()); |
| } |
| |
| } // namespace jwt_internal |
| } // namespace tink |
| } // namespace crypto |