p2p/discv5: added new topic discovery package

p2p/discv5/crypto.go

@@ -0,0 +1,31 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library 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.
+//
+// The go-ethereum library 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 the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package discv5
+
+import (
+	//"github.com/btcsuite/btcd/btcec"
+	"github.com/ethereum/go-ethereum/crypto/secp256k1"
+)
+
+func S256() *secp256k1.BitCurve {
+	return secp256k1.S256()
+}
+
+// This version should be used for NaCl compilation
+/*func S256() *btcec.KoblitzCurve {
+	return S256()
+}*/