mirror of https://github.com/perkeep/perkeep.git
34 lines
957 B
Go
34 lines
957 B
Go
/*
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Copyright 2013 The Camlistore Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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// Package misc contains stuff which should probably move elsewhere.
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//
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// This is a gross place to put code.
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package misc
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import (
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"crypto/sha256"
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"fmt"
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)
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// SHA256Prefix computes the SHA-256 digest of data and returns
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// its first twenty lowercase hex digits.
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func SHA256Prefix(data []byte) string {
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h := sha256.New()
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h.Write(data)
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return fmt.Sprintf("%x", h.Sum(nil))[:20]
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}
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