From 024c93d8224094fde6bb5a3bc1aa67ffe63b7454 Mon Sep 17 00:00:00 2001
From: Hylke Bons <hylkebons@gmail.com>
Date: Fri, 2 Jan 2015 19:21:40 +0100
Subject: [PATCH] extensions: Add helper method for SHA256 sums

---
 SparkleLib/SparkleExtensions.cs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/SparkleLib/SparkleExtensions.cs b/SparkleLib/SparkleExtensions.cs
index 2ab9eb15..0b28480c 100755
--- a/SparkleLib/SparkleExtensions.cs
+++ b/SparkleLib/SparkleExtensions.cs
@@ -45,6 +45,26 @@ namespace SparkleLib {
         }
 
 
+        public static string SHA256 (this string s)
+        {
+            SHA256 sha256        = new SHA256CryptoServiceProvider ();
+            byte [] bytes        = ASCIIEncoding.Default.GetBytes (s);
+            byte [] sha256_bytes = sha256.ComputeHash (bytes);
+
+            return BitConverter.ToString (sha256_bytes).ToLower ().Replace ("-", "");
+        }
+
+
+        public static string SHA256 (this string s, string salt)
+        {
+            SHA256 sha256        = new SHA256CryptoServiceProvider ();
+            byte [] bytes        = ASCIIEncoding.Default.GetBytes (s + salt);
+            byte [] sha256_bytes = sha256.ComputeHash (bytes);
+
+            return BitConverter.ToString (sha256_bytes).ToLower ().Replace ("-", "");
+        }
+
+
         public static string MD5 (this string s)
         {
             MD5 md5           = new MD5CryptoServiceProvider ();