[SAI_Peregrinus]

To be excessively pedantic you can encrypt securely (but slowly for the SHA series) with a hash function of sufficient capacity by running the hash function in CTR mode. You turn it into a stream cipher. Ideally you also MAC the ciphertext, nonce, and other associated data. That's is pretty easy with such a hash function (either use HMAC or a MAC mode of the hash function if supported).

Salsa20 & ChaCha20 cores are hash functions (though not collision-resistant compression functions since it's not needed for their design goal and would be slower) run in CTR mode.[1]

[1] https://cr.yp.to/salsa20.html

[caspper69]

> To be excessively pedantic

This is the best, most delicious, type of pedantry friend!

[smichel17]

You're the best kind of pedantry friend!

(Just some more pedantry, friend.)

[caspper69]

Ok man, now that's just over the top.

/s