But you can't encrypt/decrypt with hash functions!

Oh yes I fucking can you anus-mouthed niggerian jew. I can trivially push this shit into counter mode and \(Ciphertext_{counter} = H(key \| nonce \| counter) \oplus Plaintext_{counter}\)

_{Use your favourite MAC construction instead of H!}

rcrypt uses hash function for key generation
https://www.reddit.com/r/frozenvoid/wiki/void2/random_h
(of course Crypteria11( https://www.reddit.com/r/frozenvoid/wiki/algorithms/encryption/crypteria11h ) is much stronger cryptographically, but is also much slower slower)