1 files changed, 15 insertions, 0 deletions
diff --git a/lib/proto.go b/lib/proto.go
new file mode 100644
index 0000000..f3d7115
--- /dev/null
+++ b/lib/proto.go
@@ -0,0 +1,15 @@
+package lib
+
+import "time"
+
+// SignRequest represents a signing request sent to the server.
+type SignRequest struct {
+	Key        string    `json:"key"`
+	ValidUntil time.Time `json:"valid_until"`
+}
+
+// SignResponse is sent by the server.
+type SignResponse struct {
+	Status   string `json:"status"`   // Status will be "ok" or "error".
+	Response string `json:"response"` // Response will contain either the signed certificate or the error message.
+}