The best program for OneTimePad management?

/wiki/One_Time_Pad

Awesome article! However, onetime isn’t available for Whonix 16. Any recommendations (workarounds)? I would love to have a working app for One Time Pads.

Can anybody point me to the best app available, please?

What about this one? OneTime  —  Encryption with One-Time Pads

What source of entropy should be used? Can a VM provide enough entropy to support the encryption of OneTime Pads?