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 22 "github.com/google/tink/go/hybrid" 23 pb "github.com/google/tink/testing/go/protos/testing_api_go_grpc" 24) 25 26// HybridService implements the Hybrid encryption and decryption testing service. 27type HybridService struct { 28 pb.HybridServer 29} 30 31func (s *HybridService) CreateHybridEncrypt(ctx context.Context, req *pb.CreationRequest) (*pb.CreationResponse, error) { 32 handle, err := toKeysetHandle(req.GetAnnotatedKeyset()) 33 if err != nil { 34 return &pb.CreationResponse{Err: err.Error()}, nil 35 } 36 _, err = hybrid.NewHybridEncrypt(handle) 37 if err != nil { 38 return &pb.CreationResponse{Err: err.Error()}, nil 39 } 40 return &pb.CreationResponse{}, nil 41} 42 43func (s *HybridService) CreateHybridDecrypt(ctx context.Context, req *pb.CreationRequest) (*pb.CreationResponse, error) { 44 handle, err := toKeysetHandle(req.GetAnnotatedKeyset()) 45 if err != nil { 46 return &pb.CreationResponse{Err: err.Error()}, nil 47 } 48 _, err = hybrid.NewHybridDecrypt(handle) 49 if err != nil { 50 return &pb.CreationResponse{Err: err.Error()}, nil 51 } 52 return &pb.CreationResponse{}, nil 53} 54 55func (s *HybridService) Encrypt(ctx context.Context, req *pb.HybridEncryptRequest) (*pb.HybridEncryptResponse, error) { 56 handle, err := toKeysetHandle(req.GetPublicAnnotatedKeyset()) 57 if err != nil { 58 return &pb.HybridEncryptResponse{ 59 Result: &pb.HybridEncryptResponse_Err{err.Error()}}, nil 60 } 61 cipher, err := hybrid.NewHybridEncrypt(handle) 62 if err != nil { 63 return &pb.HybridEncryptResponse{ 64 Result: &pb.HybridEncryptResponse_Err{err.Error()}}, nil 65 } 66 ciphertext, err := cipher.Encrypt(req.Plaintext, req.ContextInfo) 67 if err != nil { 68 return &pb.HybridEncryptResponse{ 69 Result: &pb.HybridEncryptResponse_Err{err.Error()}}, nil 70 } 71 return &pb.HybridEncryptResponse{ 72 Result: &pb.HybridEncryptResponse_Ciphertext{ciphertext}}, nil 73} 74 75func (s *HybridService) Decrypt(ctx context.Context, req *pb.HybridDecryptRequest) (*pb.HybridDecryptResponse, error) { 76 handle, err := toKeysetHandle(req.GetPrivateAnnotatedKeyset()) 77 if err != nil { 78 return &pb.HybridDecryptResponse{ 79 Result: &pb.HybridDecryptResponse_Err{err.Error()}}, nil 80 } 81 cipher, err := hybrid.NewHybridDecrypt(handle) 82 if err != nil { 83 return &pb.HybridDecryptResponse{ 84 Result: &pb.HybridDecryptResponse_Err{err.Error()}}, nil 85 } 86 plaintext, err := cipher.Decrypt(req.Ciphertext, req.ContextInfo) 87 if err != nil { 88 return &pb.HybridDecryptResponse{ 89 Result: &pb.HybridDecryptResponse_Err{err.Error()}}, nil 90 } 91 return &pb.HybridDecryptResponse{ 92 Result: &pb.HybridDecryptResponse_Plaintext{plaintext}}, nil 93} 94