| // Copyright 2023 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 |
| // |
| // https://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. |
| |
| #ifndef THIRD_PARTY_ANONYMOUS_TOKENS_CPP_CRYPTO_BLINDER_H_ |
| #define THIRD_PARTY_ANONYMOUS_TOKENS_CPP_CRYPTO_BLINDER_H_ |
| |
| #include <string> |
| |
| #include "absl/status/statusor.h" |
| |
| namespace private_membership { |
| namespace anonymous_tokens { |
| |
| class Blinder { |
| public: |
| enum class BlinderState { kCreated = 0, kBlinded, kUnblinded }; |
| virtual absl::StatusOr<std::string> Blind(absl::string_view message) = 0; |
| |
| virtual absl::StatusOr<std::string> Unblind( |
| absl::string_view blind_signature) = 0; |
| |
| virtual ~Blinder() = default; |
| }; |
| |
| } // namespace anonymous_tokens |
| } // namespace private_membership |
| #endif // THIRD_PARTY_ANONYMOUS_TOKENS_CPP_CRYPTO_BLINDER_H_ |