Sslilu _hot_ -

Executing an ILU before every Nth packet adds CPU cycles. For high-throughput servers, this can translate into a 10-15% latency increase compared to plain TLS 1.3.

-- Rotate AES key every 100 packets local packet_counter = 0 function on_packet_sent() packet_counter = packet_counter + 1 if packet_counter % 100 == 0 then request_key_update() end end sslilu

if session.packet_count mod 10 == 0 then rotate_cipher_key(derive_new_key(session.master_secret, session.packet_count)) end if round_trip_time > 200ms then disable_compression() increase_timeout(5000) end Executing an ILU before every Nth packet adds CPU cycles

In standard TLS, if the long-term private key is compromised, past sessions are safe (forward secrecy), but current sessions remain vulnerable until renegotiation. SSLILU’s iterative key rotation means that even within a single session, the effective lifetime of any one key is extremely short. SSLILU’s iterative key rotation means that even within

The ILU program defines rules such as:

When a session misbehaves, debugging involves not just the cryptographic state but also the ILU’s internal state. This has been described as “debugging a multithreaded encryption proxy that changes its own locks.”

For example, in a standard SSL session, the cipher suite is negotiated once at the start. In an -enabled session, the cipher suite might rotate every 50 packets if an "iterative threshold" is met—such as a change in the client’s latency or a token’s time-to-live (TTL). The Origins of SSLILU: A Brief History The first known mention of sslilu traces back to a 2022 GitHub repository named "IterativeTLS" by an anonymous contributor using the handle cryptos32 . The repository proposed a patch to OpenSSL that allowed developers to embed small Lua scripts (hence the "ilu" – Iterative Logic Unit) directly into the TLS handshake.