![]() The TLS 1.2 handshake was not designed to protect the integrity of the entire handshake. While the above changes are important, the most important change in TLS 1.3 is perhaps its redesign of the handshake protocol. We use AES Galois/Counter Mode, as it also provides good performance and high throughput. This assures the confidentiality, integrity, and authenticity of the data. Authenticated Encryptionįor encryption, TLS 1.3 removes all weak ciphers and uses only Authenticated Encryption with Associated Data (AEAD). TLS 1.3, however, enforces this concept even more by removing all the key exchange algorithms that do not provide PFS, such as static RSA. Even with the previous version of TLS 1.2, Netflix has always selected a key exchange algorithm that provides PFS such as ECDHE (Elliptic Curve Diffie Hellman Ephemeral). TLS 1.2 supports key exchange algorithms with PFS, but it also allows key exchange algorithms that do not support PFS. By generating new keys for each session, PFS protects past sessions against the future compromise of secret keys. PFS is a feature of the key exchange algorithm that assures that session keys will not be compromised, even if the server’s private key is compromised. One thing we believe is very important at Netflix is providing PFS (Perfect Forward Secrecy). It is simpler, more secure and more efficient than its predecessor. TLS 1.3 is the latest version of the Transport Layer Security protocol. The TLS protocol is designed to provide a secure channel between two peers by providing tools and methods to achieve the above properties. Integrity: Data sent over the channel cannot be modified by attackers without detection.Confidentiality: Data sent over the channel is only visible to the endpoints.Authentication: Identity of the communicating party is verified.This needs to have the following three properties. What is TLS?įor two parties to communicate securely, a secure channel is necessary. Now we support TLS 1.3 for safer and faster experiences. Netflix on consumer electronics devices such as TVs, set-top boxes and streaming sticks was until recently using TLS 1.2 for streaming traffic. ![]() To achieve that, we are efficiently using ABR (adaptive bitrate streaming) for a better playback experience, DRM (Digital Right Management) to protect our service and TLS (Transport Layer Security) to protect customer privacy and to create a safer streaming experience. We are also committed to protecting users’ privacy and service security without sacrificing any part of the playback experience. We want playback to start instantly and to never stop unexpectedly in any network environment. How Netflix brings safer and faster streaming experiences to the living room on crowded networks using TLS 1.3Īt Netflix, we are obsessed with the best streaming experiences.
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