Recommendations for Secure Use of Transport Layer Security and Datagram Transport Layer Security
RFC 9325, “Recommendations for Secure Use of Transport Layer Security and Datagram Transport Layer Security”, is a Best Current Practice document published in November 2022 by Y. Sheffer, P. Saint-Andre, T. Fossati. It updates RFC 5288, RFC 6066. It obsoletes RFC 7525. The canonical text is published by the RFC Editor.
Abstract
Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) are used to protect data exchanged over a wide range of application protocols and can also form the basis for secure transport protocols. Over the years, the industry has witnessed several serious attacks on TLS and DTLS, including attacks on the most commonly used cipher suites and their modes of operation. This document provides the latest recommendations for ensuring the security of deployed services that use TLS and DTLS. These recommendations are applicable to the majority of use cases.
RFC 7525, an earlier version of the TLS recommendations, was published when the industry was transitioning to TLS 1.2. Years later, this transition is largely complete, and TLS 1.3 is widely available. This document updates the guidance given the new environment and obsoletes RFC 7525. In addition, this document updates RFCs 5288 and 6066 in view of recent attacks.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
The canonical text of RFC 9325 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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