Changing the encryption key size

[EdvinLndh]

The documentation states that AES-GCM supports both 128 and 256 bit key sizes. How do I configure which key size is used?

[MiguelCompany]

Setting property dds.sec.crypto.keysize on both reader and writer is what you need to do.
Using value 128 will use 128-bit keys. Any other value will use 256-bit keys.

I've looked at the corresponding section of the documentation, and I see that property is not documented. We will soon fix the documentation.