Added hash method

Author: djthorpe

pkg/types/hash.go

@@ -0,0 +1,16 @@
+package types
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+)
+
+///////////////////////////////////////////////////////////////////////////////
+// PUBLIC METHODS
+
+func Hash(data []byte) string {
+	// Return the SHA256 hash of the data
+	h := sha256.New()
+	h.Write(data)
+	return hex.EncodeToString(h.Sum(nil))
+}