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 signature 18 19import ( 20 commonpb "github.com/google/tink/go/proto/common_go_proto" 21 ecdsapb "github.com/google/tink/go/proto/ecdsa_go_proto" 22) 23 24// getECDSAParamNames returns the string representations of each parameter in 25// the given ECDSAParams. 26func getECDSAParamNames(params *ecdsapb.EcdsaParams) (string, string, string) { 27 hashName := commonpb.HashType_name[int32(params.HashType)] 28 curveName := commonpb.EllipticCurveType_name[int32(params.Curve)] 29 encodingName := ecdsapb.EcdsaSignatureEncoding_name[int32(params.Encoding)] 30 return hashName, curveName, encodingName 31} 32 33// newECDSAPrivateKey creates a ECDSAPrivateKey with the specified paramaters. 34func newECDSAPrivateKey(version uint32, publicKey *ecdsapb.EcdsaPublicKey, keyValue []byte) *ecdsapb.EcdsaPrivateKey { 35 return &ecdsapb.EcdsaPrivateKey{ 36 Version: version, 37 PublicKey: publicKey, 38 KeyValue: keyValue, 39 } 40} 41 42// newECDSAPublicKey creates a ECDSAPublicKey with the specified paramaters. 43func newECDSAPublicKey(version uint32, params *ecdsapb.EcdsaParams, x, y []byte) *ecdsapb.EcdsaPublicKey { 44 return &ecdsapb.EcdsaPublicKey{ 45 Version: version, 46 Params: params, 47 X: x, 48 Y: y, 49 } 50} 51