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// Copyright 2016 Google LLC. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ctfe
// Code to handle encoding / decoding various data structures used in RFC 6962. Does not
// contain the low level serialization.
import (
"crypto"
"crypto/sha256"
"github.com/google/certificate-transparency-go/x509"
)
const millisPerNano int64 = 1000 * 1000
// GetCTLogID takes the key manager for a log and returns the LogID. (see RFC 6962 S3.2)
// In CT V1 the log id is a hash of the public key.
func GetCTLogID(pk crypto.PublicKey) ([sha256.Size]byte, error) {
pubBytes, err := x509.MarshalPKIXPublicKey(pk)
if err != nil {
return [sha256.Size]byte{}, err
}
return sha256.Sum256(pubBytes), nil
}
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