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 17package services 18 19import ( 20 "context" 21 "fmt" 22 23 "github.com/google/tink/go/aead" 24 "github.com/google/tink/go/aead/internal/testing/kmsaead" 25 "github.com/google/tink/go/core/registry" 26 pb "github.com/google/tink/testing/go/protos/testing_api_go_grpc" 27) 28 29// AEADService implements the Aead testing service. 30type AEADService struct { 31 pb.AeadServer 32} 33 34func (s *AEADService) Create(ctx context.Context, req *pb.CreationRequest) (*pb.CreationResponse, error) { 35 handle, err := toKeysetHandle(req.GetAnnotatedKeyset()) 36 if err != nil { 37 return &pb.CreationResponse{Err: err.Error()}, nil 38 } 39 _, err = aead.New(handle) 40 if err != nil { 41 return &pb.CreationResponse{Err: err.Error()}, nil 42 } 43 return &pb.CreationResponse{}, nil 44} 45 46func (s *AEADService) Encrypt(ctx context.Context, req *pb.AeadEncryptRequest) (*pb.AeadEncryptResponse, error) { 47 handle, err := toKeysetHandle(req.GetAnnotatedKeyset()) 48 if err != nil { 49 return nil, err 50 } 51 cipher, err := aead.New(handle) 52 if err != nil { 53 return nil, err 54 } 55 ciphertext, err := cipher.Encrypt(req.Plaintext, req.AssociatedData) 56 if err != nil { 57 return &pb.AeadEncryptResponse{ 58 Result: &pb.AeadEncryptResponse_Err{err.Error()}}, nil 59 } 60 return &pb.AeadEncryptResponse{ 61 Result: &pb.AeadEncryptResponse_Ciphertext{ciphertext}}, nil 62} 63 64func (s *AEADService) Decrypt(ctx context.Context, req *pb.AeadDecryptRequest) (*pb.AeadDecryptResponse, error) { 65 handle, err := toKeysetHandle(req.GetAnnotatedKeyset()) 66 if err != nil { 67 return nil, err 68 } 69 cipher, err := aead.New(handle) 70 if err != nil { 71 return nil, err 72 } 73 plaintext, err := cipher.Decrypt(req.Ciphertext, req.AssociatedData) 74 if err != nil { 75 return &pb.AeadDecryptResponse{ 76 Result: &pb.AeadDecryptResponse_Err{err.Error()}}, nil 77 } 78 return &pb.AeadDecryptResponse{ 79 Result: &pb.AeadDecryptResponse_Plaintext{plaintext}}, nil 80} 81 82func init() { 83 if err := registry.RegisterKeyManager(kmsaead.NewKeyManager()); err != nil { 84 panic(fmt.Sprintf("registry.RegisterKeyManager(kmsaead.NewKeyManager()) failed: %v", err)) 85 } 86} 87