With JEP 324, Java SE is making further advances in cryptography that offers security and performance. This feature implements a key agreement using Curve25519 and Curve448. Other cryptography libraries, such as OpenSSL and BoringSSL, already support key exchanges using Curve25519 and Curve448.

You can find more information on Cureve25519 and Curve448 at https://tools.ietf.org/html/rfc7748.