1 files changed, 26 insertions, 0 deletions
diff --git a/images/challenger.dot b/images/challenger.dot
new file mode 100644
index 00000000..d3072fc7
--- /dev/null
+++ b/images/challenger.dot
@@ -0,0 +1,26 @@
+digraph G {
+
+  user[label="Resource\nOwner"];
+  exchange[label="Client"];
+  messenger[label="Messaging service"];
+  challenger [label="Challenger HTTPD"];
+  helper [label="Helper script"];
+  DBMS [label="Postgres\nDBMS"];
+  subgraph cluster_0 {
+    challenger;
+    helper;
+    DBMS;
+    label="Challenger OAuth 2.0 service";
+  }
+  user->exchange[label="0. request that\nrequires\nvalidated\naddress"];
+  exchange->challenger[label="1. authorize\naddress\nvalidation"];
+  user->challenger[label="2. Claimed\naddress"];
+  challenger->DBMS;
+  DBMS->challenger;
+  challenger->helper[label="3. TAN code\n+ address"];
+  helper->messenger[label="4. TAN code\n+ address"];
+  messenger->user[label="5. TAN code"];
+  user->challenger[label="6. TAN\ncode"];
+  user->exchange[label="7. Token"];
+  exchange->challenger[label="8. Get\nvalidated\naddress"];
+}