Comment by zokier

For the authors I recommend reading the following pages very carefully:

https://www.cryptopp.com/wiki/RandomNumberGenerator

https://www.cryptopp.com/wiki/Authenticated_Encryption

Also take heed of this note:

> Please take a moment to read Authenticated Encryption and understand why you should prefer to use CCM, GCM, or EAX over other modes, such as CBC or CTR.

from https://www.cryptopp.com/wiki/CFB_Mode