Re: Digital Signature Lifetime
From: Christian (christian_at_it-oeckinghaus.de)
Date: 07/24/03
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Date: 24 Jul 2003 11:57:19 -0700
"Bjorn Randell" <Bjorn@AlphaMale.me.uk> wrote in message news:<bfjpn8$fm7q6$1@ID-192011.news.uni-berlin.de>...
> "Christian" <christian@it-oeckinghaus.de> wrote in message
> news:12b6f66f.0307210047.3c8e6c2d@posting.google.com...
> > Hi ng,
> >
> > we're digitally signing documents sending them to customers and
> > storing them in a DB. The documents' lifetime is several years ( can
> > be 10 and more ).
> >
> > We're using SHA1/RSA with key strength of 2048.
> > Even though this key strength is regarded safe today, it won't be safe
> > in some years.
>
> I'm pretty sure SHA1 at that key length will be safe enough for a lot more
> than 10 years. What research have you got to say that it might not be so
> safe? Drop some links, I would be interested.
By the way, I'd be pretty much interested in resources about the
estimated lifetime ( i.e. how long it is considered safe ) of digital
signatures.
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