JDK-8225764 : Release Note: Support for X25519 and X448 in TLS
  • Type: Sub-task
  • Component: security-libs
  • Sub-Component: javax.net.ssl
  • Affected Version: 11.0.10-oracle,13
  • Priority: P4
  • Status: Closed
  • Resolution: Delivered
  • Submitted: 2019-06-14
  • Updated: 2021-02-04
  • Resolved: 2019-06-18
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JDK 11 JDK 13
11.0.10-oracleResolved 13Resolved
The named elliptic curve groups `x25519` and `x448` are now available for JSSE key agreement in TLS versions 1.0 to 1.3, with `x25519` being the most preferred of the default enabled named groups.  The default ordered list is now: 

    x25519, secp256r1, secp384r1, secp521r1, x448,
    sect283k1, sect283r1, sect409k1, sect409r1, sect571k1, sect571r1,
    ffdhe2048, ffdhe3072, ffdhe4096, ffdhe6144, ffdhe8192

The default list can be overridden using the system property *`jdk.tls.namedGroups`*.

[~mullan] Thanks, Sean. Didn't see the other Jira issue.