[Cryptography] Is there a good algorithm providing both compression and encryption at the same time?

Ben Laurie ben at links.org
Wed May 6 17:03:09 EDT 2015

On 6 May 2015 at 09:15, Francois BERENGER
<francois.berenger.fun at gmail.com> wrote:
> Dear list,
> While programming an open source distributed system, I discovered
> it could be interesting for the system to use a well established algorithm
> that can do these two things at the same time (for performance reasons).
> I was thinking about something along those lines:
> compression(clear_text) = (compression_dictionary, compressed_text)
> then, instead of encrypting the whole resulting pair (to save some time), we
> would send over the wire
> (symmetric_encrypt(compression_dictionary, secret_key), compressed_text)
> Of course, I would like that the compressed_text cannot be uncompressed
> by someone who doesn't have access to the compression dictionary.
> I would be interested in scientific articles or any interesting pointer.

Compression is fundamentally problematic.



> Thanks a lot,
> Francois.
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