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// Copyright (c) 2015 The Decred developers
// Copyright (c) 2016 The btcsuite developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package chainhash
import "github.com/btcsuite/fastsha256"
// HashB calculates hash(b) and returns the resulting bytes.
func HashB(b []byte) []byte {
hash := fastsha256.Sum256(b)
return hash[:]
}
// HashH calculates hash(b) and returns the resulting bytes as a Hash.
func HashH(b []byte) Hash {
return Hash(fastsha256.Sum256(b))
}
// DoubleHashB calculates hash(hash(b)) and returns the resulting bytes.
func DoubleHashB(b []byte) []byte {
first := fastsha256.Sum256(b)
second := fastsha256.Sum256(first[:])
return second[:]
}
// DoubleHashH calculates hash(hash(b)) and returns the resulting bytes as a
// Hash.
func DoubleHashH(b []byte) Hash {
first := fastsha256.Sum256(b)
return Hash(fastsha256.Sum256(first[:]))
}
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