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fb3d2ff6fe
* Introduce `dep`, the dependency vendoring tool. Use commits from `go-ethereum@release/1.7` for most of the dependencies. * Update dependencies.
34 lines
886 B
Go
34 lines
886 B
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 chainhash
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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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