1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/github.com/byzantine-lab/dexon-consensus/common/utils.go b/vendor/github.com/byzantine-lab/dexon-consensus/common/utils.go
new file mode 100644
index 000000000..0e847900f
--- /dev/null
+++ b/vendor/github.com/byzantine-lab/dexon-consensus/common/utils.go
@@ -0,0 +1,41 @@
+package common
+
+import (
+	"math/rand"
+	"time"
+)
+
+var random *rand.Rand
+
+func init() {
+	random = rand.New(rand.NewSource(time.Now().Unix()))
+}
+
+// NewRandomHash returns a random Hash-like value.
+func NewRandomHash() Hash {
+	x := Hash{}
+	for i := 0; i < HashLength; i++ {
+		x[i] = byte(random.Int() % 256)
+	}
+	return x
+}
+
+// GenerateRandomBytes generates bytes randomly.
+func GenerateRandomBytes() []byte {
+	randomness := make([]byte, 32)
+	_, err := rand.Read(randomness)
+	if err != nil {
+		panic(err)
+	}
+	return randomness
+}
+
+// CopyBytes copies byte slice.
+func CopyBytes(src []byte) (dst []byte) {
+	if len(src) == 0 {
+		return
+	}
+	dst = make([]byte, len(src))
+	copy(dst, src)
+	return
+}