Add 'twofactor/' from commit 'c999bf35b0e47de4f63d59abbe0d7efc76c13ced'

git-subtree-dir: twofactor
git-subtree-mainline: 4dc135cfe0
git-subtree-split: c999bf35b0

twofactor/util.go

@@ -0,0 +1,16 @@
+package twofactor
+
+import (
+	"strings"
+)
+
+// Pad calculates the number of '='s to add to our encoded string
+// to make base32.StdEncoding.DecodeString happy
+func Pad(s string) string {
+	if !strings.HasSuffix(s, "=") && len(s)%8 != 0 {
+		for len(s)%8 != 0 {
+			s += "="
+		}
+	}
+	return s
+}