diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index a822d58..3a9a70d 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -11,24 +11,12 @@
             "id": "e11a6a080eb83632",
             "type": "leaf",
             "state": {
-              "type": "markdown",
+              "type": "pdf",
               "state": {
-                "file": "ISEN/Sécurité IOT/CIPA4/Sécurité IOT Cours 3.md",
-                "mode": "source",
-                "source": false,
-                "backlinks": true,
-                "backlinkOpts": {
-                  "collapseAll": false,
-                  "extraContext": false,
-                  "sortOrder": "alphabetical",
-                  "showSearch": false,
-                  "searchQuery": "",
-                  "backlinkCollapsed": false,
-                  "unlinkedCollapsed": true
-                }
+                "file": "ISEN/Introduction a la cyber et a la cryptographie/CIPA 4/20250708_CRYPTO_slides.pdf"
               },
-              "icon": "lucide-file",
-              "title": "Sécurité IOT Cours 3"
+              "icon": "lucide-file-text",
+              "title": "20250708_CRYPTO_slides"
             }
           },
           {
@@ -254,8 +242,8 @@
   },
   "active": "e11a6a080eb83632",
   "lastOpenFiles": [
-    "ISEN/Sécurité IOT/CIPA4/Sécurité IOT Cours 2.md",
     "ISEN/Sécurité IOT/CIPA4/Sécurité IOT Cours 3.md",
+    "ISEN/Sécurité IOT/CIPA4/Sécurité IOT Cours 2.md",
     "ISEN/Sécurité IOT/CIPA4/Sécurité IOT Cours 1.md",
     "ISEN/Navigation de vehicule autonome/CIPA4/Navigation de véhicule autonome Cours 1.md",
     "ISEN/Securité IOT",