Re: 128bit RSA public key - time to break?

From: Rick Wash (rwash@citi.umich.edu)
Date: 02/23/03 

From: Rick Wash <rwash@citi.umich.edu>
Date: Sun, 23 Feb 2003 14:19:25 GMT

In article <3e584377$0$13177$5a62ac22@freenews.iinet.net.au>, Shane Hird wrote:

> Yep.. The key will be used as an identifier as well, which has
> already been fixed to 128 bits. For backwards compatibility it would
> be good to use those same bits for the public key.
>
> I'm trying to add digital signatures to file requests in a p2p
> application to assist in a credit system. Currently the protocol
> uses no authentication at all, just trusts the ID that is sent to
> it.

Can you take this 128-bit identifier and feed it into a pseudo-random
number generator to output a larger public key?

  Rick

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