Bulletproof TLS Newsletter is a free periodic newsletter bringing you commentary and news surrounding SSL/TLS and Internet PKI, designed to keep you informed about the latest developments in this space. Maintained by Hanno Böck.
28 May 2021
Today we celebrate the release of QUIC, a brand-new reliable and secure protocol that marks a new direction in how networking standards are designed. Before QUIC, secure communication on the Internet involved several layers, most frequently TCP for reliable transport and TLS for security. This layered approach (via the OSI model) served us well, but there was a desire for even better performance, for which development of a specialised protocol was necessary.
That’s where QUIC comes in. The main use case covers a client that needs a large number of connections to the same server, in other words—browsers. QUIC avoids TCP and builds on UDP to provide a new protocol that’s always encrypted and provides better performance. The main wins for performance are faster connection setup, multiplexing, and better behaviour in face of packet loss. The main win for security is that QUIC is always encrypted and reuse of TLS 1.3. In the longer term, we should expect to see QUIC as the foundation for many new uses.Read More
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