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The open source project OpenSSL has released version 3.2, which includes support for TCP Fast Open on Linux, new Argon2 password hashing algorithm, and other improvements.

The release announcement details the changes in the new version: 

"This release is a snapshot of the code base at the time of its release. This means it is intended to be a stable release, suitable for deployment in production environments. The next major release will be v3.3 in October 2016."

The most important changes are:

  • Support for more than 1 billion keys in memory (the previous limit was around 32K);
  • New Argon2 password hashing algorithm; - Updates to ChaCha20 and Poly1305 ciphers;
  • A new X25519-based Diffie-Hellman key exchange method;
  • An experimental port to Windows XP and Windows 2003 platforms;
  • Support for IPv6 over IPsec SAD payloads (RFC 7296);
  • New functions for dtls1_listen().

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