Matt, Thanks, that was really quick! Regards, -- Sajin
-----Original Message----- From: Matt Johnston [mailto:[EMAIL PROTECTED] Sent: Fri 9/12/2008 12:49 PM To: Valoth, Sajin [NETPWR/EMBED/MA] Cc: [email protected] Subject: Re: PuTTY compatibility: Does gen_rsa_priv_key still need to regenerate primes until modulus is a multiple-of-8-bits long ? On Fri, Sep 12, 2008 at 10:32:01AM -0500, [EMAIL PROTECTED] wrote: > Hi all, > > With dropbear 0.48.1 running on a MIPS Au1550 platform, > RSA key generation occasionally takes a very long time (multiple > minutes); > the problem was traced to the loop shown below in > gen_rsa_priv_key() > which executes many times, until a value of the modulus, n, > is finally computed that is a multiple-of-8-bits long. ... > > However, using more recent versions of PuTTY (0.58 and 0.60), > I don't see any problems > with keys generated by dropbear where the modulus is not a > multiple-of-8-bits long. > > So, my question is: should the loop above be deprecated since > it doesn't appear to be necessary any more? Yes, it looks like this was fixed in PuTTY 0.54 in 2004 [1], so can be removed. Thanks for letting me know. Cheers, Matt [1] http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/rsa-non8mult-verify-fail.html
