1 // Copyright 2017 Google Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 /////////////////////////////////////////////////////////////////////////////// 16 17 #ifndef TINK_PUBLIC_KEY_VERIFY_H_ 18 #define TINK_PUBLIC_KEY_VERIFY_H_ 19 20 #include "absl/strings/string_view.h" 21 #include "tink/util/status.h" 22 23 namespace crypto { 24 namespace tink { 25 26 /////////////////////////////////////////////////////////////////////////////// 27 // Interface for public key verifying. 28 // Digital Signatures provide functionality of signing data and verification of 29 // the signatures. They are represented by a pair of primitives (interfaces) 30 // 'PublicKeySign' for signing of data, and 'PublicKeyVerify' for verification 31 // of signatures. Implementations of these interfaces are secure against 32 // adaptive chosen-message attacks. Signing data ensures the authenticity and 33 // the integrity of that data, but not its secrecy. 34 class PublicKeyVerify { 35 public: 36 // Verifies that 'signature' is a digital signature for 'data'. 37 virtual crypto::tink::util::Status Verify( 38 absl::string_view signature, 39 absl::string_view data) const = 0; 40 41 virtual ~PublicKeyVerify() = default; 42 }; 43 44 } // namespace tink 45 } // namespace crypto 46 47 #endif // TINK_PUBLIC_KEY_VERIFY_H_ 48