Initial QSfera import

Server/vendor/github.com/longsleep/rndm/string.go

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2017 Kopano
+ *
+ * Use of this source code is governed by a MIT license
+ * that can be found in the LICENSE.txt file.
+ *
+ */
+
+package rndm
+
+import (
+	"encoding/base64"
+)
+
+// GenerateRandomString returns a URL-safe, base64 encoded securely generated
+// random string. It will panic if the system fails to provide secure random
+// data.
+func GenerateRandomString(s int) string {
+	b := GenerateRandomBytes(s)
+
+	return base64.RawURLEncoding.EncodeToString(b)
+}