[Cryptography] crypto standards and principles

[Dave Horsfall]

On Tue, 3 Feb 2015, John Denker wrote:

> Be that as it may ... the NSA still keeps secret the workings
> of its own most-advanced systems.  AFAICT there are only two
> possible explanations for this:
>  1) They think their best system might get broken if the
>   adversaries found out how it worked.
>  2) Many other systems are already broken, and they don't 
>   want unbreakable crypto to fall into the hands of others. 
>   This surely leaves friendly non-top-secret communications 
>   vulnerable, in violation of Rowlett's maxim.

3) Why tell the enemy anything at all?

> Either way, it's not very flattering to the NSA.

Or maybe they're just doing what they do best.

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