I was strictly confining my comments to the implementation the poster was discussing coding up in a weekend. The Rijndael algorithm itself is of course, very w

I was strictly confining my comments to the implementation the poster was discussing coding up in a weekend. The Rijndael algorithm itself is of course, very well reviewed and perhaps one of the most solid algorithms publicly available. Which is part of why it was chosen for AES. (Speed being the other factor.) I think perhaps you misunderstood the conversation.