Is there? The usual term for what you're describing is a "stream cipher" or a "s...

zamalek · on Sept 12, 2014

I think the objection here comes from not stating that it's AES in CTR mode.

AES is not a symmetric algorithm, AES in CTR mode is.

cbsmith · on Sept 12, 2014

The other poster was talking about a stream cipher...

However, I'd point out that DES is a block cipher (thought it can be turned in to streaming cipher much like AES), and its decryption is encryption is with the keys in reverse order. This is how triple-DES can work as it does.