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 package com.google.crypto.tink.testing; 18 19 import com.google.crypto.tink.Aead; 20 import com.google.crypto.tink.testing.proto.AeadDecryptRequest; 21 import com.google.crypto.tink.testing.proto.AeadDecryptResponse; 22 import com.google.crypto.tink.testing.proto.AeadEncryptRequest; 23 import com.google.crypto.tink.testing.proto.AeadEncryptResponse; 24 import com.google.crypto.tink.testing.proto.AeadGrpc.AeadImplBase; 25 import com.google.crypto.tink.testing.proto.CreationRequest; 26 import com.google.crypto.tink.testing.proto.CreationResponse; 27 import com.google.protobuf.ByteString; 28 import io.grpc.stub.StreamObserver; 29 import java.security.GeneralSecurityException; 30 31 /** Implements a gRPC Aead Testing service. */ 32 public final class AeadServiceImpl extends AeadImplBase { 33 AeadServiceImpl()34 public AeadServiceImpl() throws GeneralSecurityException {} 35 36 @Override create(CreationRequest request, StreamObserver<CreationResponse> responseObserver)37 public void create(CreationRequest request, StreamObserver<CreationResponse> responseObserver) { 38 Util.createPrimitiveForRpc(request, responseObserver, Aead.class); 39 } 40 encrypt(AeadEncryptRequest request)41 AeadEncryptResponse encrypt(AeadEncryptRequest request) throws GeneralSecurityException { 42 Aead aead = Util.parseBinaryProtoKeyset(request.getAnnotatedKeyset()).getPrimitive(Aead.class); 43 try { 44 byte[] ciphertext = 45 aead.encrypt( 46 request.getPlaintext().toByteArray(), request.getAssociatedData().toByteArray()); 47 return AeadEncryptResponse.newBuilder() 48 .setCiphertext(ByteString.copyFrom(ciphertext)) 49 .build(); 50 } catch (GeneralSecurityException e) { 51 return AeadEncryptResponse.newBuilder().setErr(e.toString()).build(); 52 } 53 } 54 55 /** Encrypts a message. */ 56 @Override encrypt( AeadEncryptRequest request, StreamObserver<AeadEncryptResponse> responseObserver)57 public void encrypt( 58 AeadEncryptRequest request, StreamObserver<AeadEncryptResponse> responseObserver) { 59 try { 60 AeadEncryptResponse response = encrypt(request); 61 responseObserver.onNext(response); 62 responseObserver.onCompleted(); 63 } catch (Exception e) { 64 responseObserver.onError(e); 65 } 66 } 67 decrypt(AeadDecryptRequest request)68 AeadDecryptResponse decrypt(AeadDecryptRequest request) throws GeneralSecurityException { 69 Aead aead = 70 Util.parseBinaryProtoKeyset(request.getAnnotatedKeyset()) 71 .getPrimitive(Aead.class); 72 try { 73 byte[] plaintext = 74 aead.decrypt( 75 request.getCiphertext().toByteArray(), request.getAssociatedData().toByteArray()); 76 return AeadDecryptResponse.newBuilder().setPlaintext(ByteString.copyFrom(plaintext)).build(); 77 } catch (GeneralSecurityException e) { 78 return AeadDecryptResponse.newBuilder().setErr(e.toString()).build(); 79 } 80 } 81 82 /** Decrypts a message. */ 83 @Override decrypt( AeadDecryptRequest request, StreamObserver<AeadDecryptResponse> responseObserver)84 public void decrypt( 85 AeadDecryptRequest request, StreamObserver<AeadDecryptResponse> responseObserver) { 86 try { 87 AeadDecryptResponse response = decrypt(request); 88 responseObserver.onNext(response); 89 responseObserver.onCompleted(); 90 } catch (Exception e) { 91 responseObserver.onError(e); 92 } 93 } 94 } 95