fast des

[Brad Huntting]

> Run your plaintext through compress first; remove the compress
> header; then encrypt. Compression will screw up character frequencies
> (and use all eight bits) enough to make automated detection of a
> successfully-broken encryption really darn hard. Especially if you
> keep changing compression technology each message.

Most encryption scheams use cypher block chaining or some other
mechanism where a change in one block will affect every block to
come after it, no?

Given this, would inserting a block of random data at the begining
of the datastream help?


brad