+// GoGOST -- Pure Go GOST cryptographic functions library
+// Copyright (C) 2015-2016 Sergey Matveev <stargrave@stargrave.org>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+// Command-line 34.11-2012 512-bit hash function.
+package main
+
+import (
+ "encoding/hex"
+ "flag"
+ "fmt"
+ "io"
+ "os"
+
+ "cypherpunks.ru/gogost"
+ "cypherpunks.ru/gogost/gost34112012512"
+)
+
+var (
+ version = flag.Bool("version", false, "Print version information")
+)
+
+func main() {
+ flag.Parse()
+ if *version {
+ fmt.Println(gogost.Version)
+ return
+ }
+ h := gost34112012512.New()
+ io.Copy(h, os.Stdin)
+ fmt.Println(hex.EncodeToString(h.Sum(nil)))
+}