Re: hash of a string is the same string?
- From: Guy Macon <http://www.GuyMacon.com/>
- Date: Wed, 14 Jan 2009 22:00:28 +0000
Paul Rubin wrote:
Ertugrul Söylemez <es@xxxxxxxx> writes:
Don't you think that the absence of fixed points or extremely small
cycles indicates a potentially insecure hash function?
I would say that if the presence or absence of fixed points is known,
that could be a sign of insecurity.
Really? If I fired up a program that tests sha1 (or whatever gets chosen
to replace it) with string after string, and by chance I stumble upon a
string that happens to hash to itself, that would suddenly reduce the
security of that hash function?