The strongSwan VPN suite uses the native IPsec stack in the standard Linux kernel. It supports both the IKEv1 and IKEv2 protocols.

This package provides the AF_ALG Linux crypto API interface plugin for strongSwan. It provides ciphers/hashers/hmac/xcbc.

This plugin is now included in libstrongswan-extra-plugins. This package can be safely removed once it's installed.