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ca0619bbcf
* [NOD-176] Moved daghash from dagconfig to util * [NOD-176] Fixed order of includes with gofmt
41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
// Copyright (c) 2015 The Decred developers
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// Copyright (c) 2016-2017 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package daghash
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import "crypto/sha256"
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// HashB calculates hash(b) and returns the resulting bytes.
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func HashB(b []byte) []byte {
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hash := sha256.Sum256(b)
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return hash[:]
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}
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// HashH calculates hash(b) and returns the resulting bytes as a Hash.
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func HashH(b []byte) Hash {
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return Hash(sha256.Sum256(b))
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}
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// DoubleHashB calculates hash(hash(b)) and returns the resulting bytes.
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func DoubleHashB(b []byte) []byte {
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first := sha256.Sum256(b)
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second := sha256.Sum256(first[:])
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return second[:]
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}
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// DoubleHashH calculates hash(hash(b)) and returns the resulting bytes as a
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// Hash.
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func DoubleHashH(b []byte) Hash {
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first := sha256.Sum256(b)
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return Hash(sha256.Sum256(first[:]))
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}
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// DoubleHashP calculates hash(hash(b)) and returns the resulting bytes as a
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// pointer to Hash.
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func DoubleHashP(b []byte) *Hash {
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h := DoubleHashH(b)
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return &h
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}
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