YuOpenSSL-3.5: Version History

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YuOpenSSL is a Delphi port of the OpenSSL cryptography and SSL/TSL library. All code is statically compiled into applications. OpenSSL DLLs are not needed. Over 5000 functions, procedures, constants, and types are ready to use in a single Delphi unit.

YuOpenSSL-3.5 v1.0.0 – 18 Aug 2025

First release, based on OpenSSL 3.5.2.

Changes from OpenSSL 3.4:

Potentially significant or incompatible changes:

Default encryption cipher for the req, cms, and smime applications changed from des-ede3-cbc to aes-256-cbc.
The default TLS supported groups list has been changed to include and prefer hybrid PQC KEM groups. Some practically unused groups were removed from the default list.
The default TLS keyshares have been changed to offer X25519MLKEM768 and X25519.
All BIO_meth_get_*() functions were deprecated.

New features:

Support for server side QUIC (RFC 9000).
Support for 3rd party QUIC stacks including 0-RTT support.
Support for PQC algorithms (ML-KEM, ML-DSA and SLH-DSA).
Support added for opaque symmetric key objects (EVP_SKEY).
Support for multiple TLS keyshares and improved TLS key establishment group configurability.
API support for pipelining in provided cipher algorithms.