1// Copyright 2019 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 daead 18 19import ( 20 "fmt" 21 22 "google.golang.org/protobuf/proto" 23 "github.com/google/tink/go/internal/tinkerror" 24 aspb "github.com/google/tink/go/proto/aes_siv_go_proto" 25 tinkpb "github.com/google/tink/go/proto/tink_go_proto" 26) 27 28// AESSIVKeyTemplate is a KeyTemplate that generates a AES-SIV key. 29func AESSIVKeyTemplate() *tinkpb.KeyTemplate { 30 format := &aspb.AesSivKeyFormat{ 31 KeySize: 64, 32 } 33 serializedFormat, err := proto.Marshal(format) 34 if err != nil { 35 tinkerror.Fail(fmt.Sprintf("failed to marshal key format: %s", err)) 36 } 37 return &tinkpb.KeyTemplate{ 38 TypeUrl: aesSIVTypeURL, 39 OutputPrefixType: tinkpb.OutputPrefixType_TINK, 40 Value: serializedFormat, 41 } 42} 43