March 2014 update

Task/SHA-1/PowerShell/sha-1.psh

@@ -0,0 +1,11 @@
+Function Calculate-SHA1( $String ){
+    $Enc = [system.Text.Encoding]::UTF8
+    $Data = $enc.GetBytes($String)
+
+    # Create a New SHA1 Crypto Provider
+    $Sha = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider
+
+    # Now hash and display results
+    $Result = $sha.ComputeHash($Data)
+    [System.Convert]::ToBase64String($Result)
+}