1// Copyright 2017 Google Inc. 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 17syntax = "proto3"; 18 19package google.crypto.tink; 20 21import "proto/common.proto"; 22 23option java_package = "com.google.crypto.tink.proto"; 24option java_multiple_files = true; 25option go_package = "github.com/google/tink/go/proto/hmac_go_proto"; 26 27message HmacParams { 28 HashType hash = 1; // HashType is an enum. 29 uint32 tag_size = 2; 30} 31 32// key_type: type.googleapis.com/google.crypto.tink.HmacKey 33message HmacKey { 34 uint32 version = 1; 35 HmacParams params = 2; 36 bytes key_value = 3; 37} 38 39message HmacKeyFormat { 40 HmacParams params = 1; 41 uint32 key_size = 2; 42 uint32 version = 3; 43} 44