The post-quantum cryptography (PQC) transition is well underway in Red Hat Enterprise Linux (RHEL). In May 2025, RHEL 10 delivered post-quantum key exchange algorithms in three major cryptography libraries (OpenSSL, GnuTLS, and NSS), making post-quantum key exchange usable in TLS 1.3 connections. RHEL 10.1 followed, setting the new key exchange algorithms as default in TLS, and introducing post-quantum signatures for RPM packages.The secure shel…
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