[Info-vax] Current state of file/disk encryption on VMS

[David Jones]

On Thursday, September 1, 2022 at 5:08:04 PM UTC-4, Alexander Schreiber wrote:
> Well, that is actually the right thing do to from a crypto security 
> point of view. Compressed files tend to have specified headers and 
> structures, which means that "compress, then encrypt" potentially 
> enables a nice automatic known plaintext attack. And I suspect that 
> is the reason it was done this way.

I'm guessing the redundancy blocks backup includes by default weaken the
encryption also.