1 // Copyright 2020 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 // Implementation of a MAC Service.
18 #include "mac_impl.h"
19
20 #include <memory>
21 #include <string>
22 #include <utility>
23
24 #include "tink/mac.h"
25 #include "create.h"
26 #include "proto/testing_api.grpc.pb.h"
27
28 namespace tink_testing_api {
29
30 using ::crypto::tink::util::StatusOr;
31
Create(grpc::ServerContext * context,const CreationRequest * request,CreationResponse * response)32 ::grpc::Status MacImpl::Create(grpc::ServerContext* context,
33 const CreationRequest* request,
34 CreationResponse* response) {
35 return CreatePrimitiveForRpc<crypto::tink::Mac>(request, response);
36 }
37
38 // Computes a MAC
ComputeMac(grpc::ServerContext * context,const ComputeMacRequest * request,ComputeMacResponse * response)39 ::grpc::Status MacImpl::ComputeMac(grpc::ServerContext* context,
40 const ComputeMacRequest* request,
41 ComputeMacResponse* response) {
42 StatusOr<std::unique_ptr<crypto::tink::Mac>> mac_result =
43 PrimitiveFromSerializedBinaryProtoKeyset<crypto::tink::Mac>(
44 request->annotated_keyset());
45 if (!mac_result.ok()) {
46 response->set_err(std::string(mac_result.status().message()));
47 return ::grpc::Status::OK;
48 }
49 auto compute_result = mac_result.value()->ComputeMac(request->data());
50 if (!compute_result.ok()) {
51 response->set_err(std::string(compute_result.status().message()));
52 return ::grpc::Status::OK;
53 }
54 response->set_mac_value(compute_result.value());
55 return ::grpc::Status::OK;
56 }
57
58 // Verifies a MAC
VerifyMac(grpc::ServerContext * context,const VerifyMacRequest * request,VerifyMacResponse * response)59 ::grpc::Status MacImpl::VerifyMac(grpc::ServerContext* context,
60 const VerifyMacRequest* request,
61 VerifyMacResponse* response) {
62 StatusOr<std::unique_ptr<crypto::tink::Mac>> mac_result =
63 PrimitiveFromSerializedBinaryProtoKeyset<crypto::tink::Mac>(
64 request->annotated_keyset());
65 if (!mac_result.ok()) {
66 response->set_err(std::string(mac_result.status().message()));
67 return ::grpc::Status::OK;
68 }
69 auto status =
70 mac_result.value()->VerifyMac(request->mac_value(), request->data());
71 if (!status.ok()) {
72 response->set_err(std::string(status.message()));
73 return ::grpc::Status::OK;
74 }
75 return ::grpc::Status::OK;
76 }
77
78 } // namespace tink_testing_api
79