From b73bd2859ca9c3209f6da9c29346b95548b6b8c9 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Sat, 7 Aug 2021 23:54:35 +0200
Subject: Protect against replay attacks

---
 src/CacheCryptoStructs.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/CacheCryptoStructs.h')

diff --git a/src/CacheCryptoStructs.h b/src/CacheCryptoStructs.h
index 409c9d67..69d64885 100644
--- a/src/CacheCryptoStructs.h
+++ b/src/CacheCryptoStructs.h
@@ -50,6 +50,9 @@ struct GroupSessionData
         std::string sender_claimed_ed25519_key;
         std::vector<std::string> forwarding_curve25519_key_chain;
 
+        //! map from index to event_id to check for replay attacks
+        std::map<uint32_t, std::string> indices;
+
         // who has access to this session.
         // Rotate, when a user leaves the room and share, when a user gets added.
         SharedWithUsers currently;
-- 
cgit 1.5.1