Release v0.3.0

vendor/github.com/ltcsuite/ltcd/chaincfg/chainhash/hashfuncs.go

@@ -0,0 +1,33 @@
+// Copyright (c) 2015 The Decred developers
+// Copyright (c) 2016-2017 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 "crypto/sha256"
+
+// HashB calculates hash(b) and returns the resulting bytes.
+func HashB(b []byte) []byte {
+	hash := sha256.Sum256(b)
+	return hash[:]
+}
+
+// HashH calculates hash(b) and returns the resulting bytes as a Hash.
+func HashH(b []byte) Hash {
+	return Hash(sha256.Sum256(b))
+}
+
+// DoubleHashB calculates hash(hash(b)) and returns the resulting bytes.
+func DoubleHashB(b []byte) []byte {
+	first := sha256.Sum256(b)
+	second := sha256.Sum256(first[:])
+	return second[:]
+}
+
+// DoubleHashH calculates hash(hash(b)) and returns the resulting bytes as a
+// Hash.
+func DoubleHashH(b []byte) Hash {
+	first := sha256.Sum256(b)
+	return Hash(sha256.Sum256(first[:]))
+}