From 90cd8b7b4773edeeb64a3f4160beadb95e26efe7 Mon Sep 17 00:00:00 2001
From: "Frederick F. Kautz IV" <fkautz@alumni.cmu.edu>
Date: Sat, 28 Feb 2015 15:51:33 -0800
Subject: [PATCH] Adding streaming sha512

---
 pkg/utils/crypto/sha512/sha512.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkg/utils/crypto/sha512/sha512.go b/pkg/utils/crypto/sha512/sha512.go
index b06109d17..24d37f603 100644
--- a/pkg/utils/crypto/sha512/sha512.go
+++ b/pkg/utils/crypto/sha512/sha512.go
@@ -175,3 +175,13 @@ func Sum(reader io.Reader) ([]byte, error) {
 	}
 	return h.Sum(nil), nil
 }
+
+func SumStream(reader io.Reader) ([Size]byte, error) {
+	var returnValue [Size]byte
+	sumSlice, err := Sum(reader)
+	if err != nil {
+		return returnValue, err
+	}
+	copy(returnValue[:], sumSlice)
+	return returnValue, err
+}