1 files changed, 21 insertions, 0 deletions
diff --git a/auth.go b/auth.go
new file mode 100644
index 0000000..2f7b0c4
--- /dev/null
+++ b/auth.go
@@ -0,0 +1,21 @@
+package main
+
+import "time"
+
+var authIface authBackend
+
+type user struct {
+	name      string
+	salt      []byte
+	verifier  []byte
+	timestamp time.Time
+}
+
+type authBackend interface {
+	Exists(name string) bool
+	Passwd(name string) (salt, verifier []byte, err error)
+	SetPasswd(name string, salt, verifier []byte) error
+	Timestamp(name string) (time.Time, error)
+	Import(data []user)
+	Export() ([]user, error)
+}