CFB8 BufEncryptor/Decryptor?

[valaphee]

While trying to work with cfb8 in tokio codecs, I have the issue that I can't use the Decryptor/Encryptor decrypt, encrypt methods, as they require ownership, which after knowing that for generalization there are also BufEncryptor/Decryptor, for example like in cfb-mode is understandable.

But there seems to be no BufEncryptor/Decryptor for cfb8. Which theoretically would also work with modifying the AsyncStreamCipher, and use mut borrowing (which I had done here #1261)

The correct solution would be to implement BufEncryptor/Decryptor for the CFB8?

And the cfb8-mode crate doesn't belong to RustCrypto? (is version 0.0.0)

[newpavlov]

See RustCrypto/block-modes#31