From 463b056518e253578d4656dd2217a83f830e584f Mon Sep 17 00:00:00 2001
From: "Daniel A. Nagy" <nagy.da@gmail.com>
Date: Sun, 1 Feb 2015 14:38:38 +0100
Subject: [PATCH] Import bzzhash from bzz-fefe branch

---
 bzz/bzzhash/bzzhash.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 bzz/bzzhash/bzzhash.go

diff --git a/bzz/bzzhash/bzzhash.go b/bzz/bzzhash/bzzhash.go
new file mode 100644
index 0000000000..47086063a8
--- /dev/null
+++ b/bzz/bzzhash/bzzhash.go
@@ -0,0 +1,28 @@
+// bzzhash
+package main
+
+import (
+	"fmt"
+	"github.com/ethereum/go-ethereum/bzz"
+	"io"
+	"os"
+)
+
+func main() {
+
+	if len(os.Args) < 2 {
+		fmt.Println("Usage: bzzhash <file name>")
+		os.Exit(0)
+	}
+	f, err := os.Open(os.Args[1])
+	if err != nil {
+		fmt.Println("Error opening file " + os.Args[1])
+		os.Exit(1)
+	}
+
+	stat, _ := f.Stat()
+	sr := io.NewSectionReader(f, 0, stat.Size())
+	hash := bzz.GetDPAhash(sr, nil)
+
+	fmt.Printf("%064x\n", hash)
+}