github.com/mre-fog/trillianxx@v1.1.2-0.20180615153820-ae375a99d36a/examples/ct/ctmapper/hasher.go (about)

     1  // Copyright 2017 Google Inc. All Rights Reserved.
     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  // Package ctmapper maps from a verifiable log to verifiable map.
    16  package ctmapper
    17  
    18  import "crypto/sha256"
    19  
    20  // HashDomain converts a domain into a map index.
    21  func HashDomain(key string) []byte {
    22  	h := sha256.New()
    23  	h.Write([]byte(key))
    24  	return h.Sum(nil)
    25  }