1 files changed, 18 insertions, 1 deletions
diff --git a/crypto/randentropy/rand_entropy.go b/crypto/randentropy/rand_entropy.go
index 68bb8808b..4ac12460b 100644
--- a/crypto/randentropy/rand_entropy.go
+++ b/crypto/randentropy/rand_entropy.go
@@ -1,9 +1,26 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+
 package randentropy
 
 import (
 	crand "crypto/rand"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
 	"io"
+
+	"github.com/ethereum/go-ethereum/crypto/sha3"
 )
 
 var Reader io.Reader = &randEntropy{}