New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/issues/26757#issuecomment-735756151

Comment:
From the actually accepted PR, https://github.com/xsf/xeps/pull/903

>   <li>Divide the HKDF output into a 32-byte encryption key, a 32-byte authentication key and a 16 byte IV.</li>