OpenSSL prepares for a quantum future with 3.5.0 release
HelpNet Security, Wednesday, April 9th, 2025
The OpenSSL Project has released version 3.5.0 of its widely used open-source cryptographic library, introducing new features and notable changes that signal its evolution toward future-ready cryptography.
This feature release includes support for post-quantum cryptography (PQC), server-side QUIC, and tighter control over TLS behavior.
Default behaviors reworked
OpenSSL 3.5.0 makes several potentially incompatible changes to default settings. Notably, the default encryption cipher for the req, cms, and smime command-line utilities has changed from the aging des-ede3-cbc to the stronger aes-256-cbc, reflecting modern security standards.