Topic Thread

#jep-527

1 published observation tracking this thread.

Java 27 combining post-quantum TLS 1.3 key exchange with JVM runtime and performance changes

Java 27 Makes Post-Quantum TLS a Runtime Upgrade, Not a Separate Migration

Java 27's most consequential security change is JEP 527: hybrid post-quantum key exchange for TLS 1.3. Because the release also changes runtime defaults and includes preview features, teams should evaluate it as both a cryptography milestone and a normal runtime upgrade.

2026-09-19#Java · #OpenJDK