Working version

python/after.py

@@ -0,0 +1,15 @@
+try:
+    cdm.parse_license(session_id, licence)
+except Exception as e:
+    js.document.getElementById('result').value=f"Could not decrypt!\n\nLicense Response:\n{licence}\n\nhttps://github.com/FoxRefire/wvg/wiki/How-to-add-custom-license-scheme-yourself"
+    raise Exception(e)
+
+# get keys
+keys=""
+for key in cdm.get_keys(session_id):
+    if key.type=="CONTENT":
+        keys+=f"{key.kid.hex}:{key.key.hex()}\n"
+
+# close session, disposes of session data
+cdm.close(session_id)
+keys