31 lines
994 B
Go
31 lines
994 B
Go
// Copyright 2021 Google LLC. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package log
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import (
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"crypto/sha256"
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"fmt"
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)
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// ID returns the identifier to use for a log given the Origin. This is the ID
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// used to find checkpoints for this log at distributors, and that will be used
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// to feed checkpoints to witnesses.
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func ID(origin string) string {
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s := sha256.New()
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s.Write([]byte("o:"))
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s.Write([]byte(origin))
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return fmt.Sprintf("%x", s.Sum(nil))
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}
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