1 // Copyright 2022 Google LLC 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_MAC_INTERNAL_CHUNKED_MAC_WRAPPER_H_ 18 #define TINK_MAC_INTERNAL_CHUNKED_MAC_WRAPPER_H_ 19 20 #include <memory> 21 22 #include "absl/strings/string_view.h" 23 #include "tink/chunked_mac.h" 24 #include "tink/primitive_set.h" 25 #include "tink/primitive_wrapper.h" 26 #include "tink/util/statusor.h" 27 #include "proto/tink.pb.h" 28 29 namespace crypto { 30 namespace tink { 31 namespace internal { 32 33 // Wraps a set of ChunkedMac-instances that correspond to a keyset, 34 // and combines them into a single ChunkedMac-primitive, that uses the provided 35 // instances, depending on the context: 36 // * ChunkedMac::CreateComputation(...) uses the primary instance from the 37 // set. 38 // * ChunkedMac::CreateVerification(...) uses all instances with matching 39 // MAC prefixes. 40 class ChunkedMacWrapper : public PrimitiveWrapper<ChunkedMac, ChunkedMac> { 41 public: 42 util::StatusOr<std::unique_ptr<ChunkedMac>> Wrap( 43 std::unique_ptr<PrimitiveSet<ChunkedMac>> mac_set) const override; 44 }; 45 46 } // namespace internal 47 } // namespace tink 48 } // namespace crypto 49 50 #endif // TINK_MAC_INTERNAL_CHUNKED_MAC_WRAPPER_H_ 51