From b0d8166897ff5a59359aadf3d3b2f1dceefa99d1 Mon Sep 17 00:00:00 2001
From: xdrm-brackets <xdrm.brackets.dev@gmail.com>
Date: Wed, 5 Sep 2018 17:38:38 +0200
Subject: [PATCH] add sequence diagram

---
 PROTOCOL.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/PROTOCOL.md b/PROTOCOL.md
index 4050e46..fe21ba0 100644
--- a/PROTOCOL.md
+++ b/PROTOCOL.md
@@ -200,6 +200,14 @@ Each token has a size defined by the *hash function*, which is `sha512` for this
 
 > For readability purposes, the tokens are sent as their hexadecimal representation ; each token is then a string of 128 characters.
 
+```sequence
+participant Client
+participant Server
+Client->Server: x1,x2
+Note right of Server : unscramble x1,x2
+Note right of Server : x1 valid, store x2
+Server->Client: Success
+```
 
 ### 1. Send the request