DES-X Encryption slow / Help needed

[chants]

The picture is just the generic CBC encryption mode. So I'm unclear how you can parallelize it as CBC has dependencies requiring it processed in a line order. But if you are happy with the performance in one direction, then VB.NET can deliver adequate enough performance in the opposite direction if you performance profile and refactoring to make good reuse of memory and avoid unnecessary copies.

Don't worry about the guy with ~15 accounts telling you to abandon ship. Though such advice is fine in general, most of us can read and developed abstract thinking during childhood so we are capable of inferring contextual clues. Unlike this smooth brained individual, yielding too many accounts.