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Discussion => Security => Topic started by: solareclipse64236 on July 20, 2012, 09:45 pm

Title: Bigger than 3072 bits RSA? PGP
Post by: solareclipse64236 on July 20, 2012, 09:45 pm

Is this available?

Title: Re: Bigger than 3072 bits RSA? PGP
Post by: vlad1m1r on July 20, 2012, 11:15 pm

Quote from: solareclipse64236 on July 20, 2012, 09:45 pm

Is this available?

If you use GPG4USB you can get a 4096 bit key...

V.

Title: Re: Bigger than 3072 bits RSA? PGP
Post by: solareclipse64236 on July 20, 2012, 11:19 pm

sweet

Title: Re: Bigger than 3072 bits RSA? PGP
Post by: LouisCyphre on July 21, 2012, 07:50 am

Quote from: solareclipse64236 on July 20, 2012, 09:45 pm

Is this available?

By default it depends on the algorithm.  The upper limit for DSA is 3072-bit, the upper limit for RSA is 4096-bit and the upper limit for Elgamal is 4096-bit except when generating a normal DSA/Elgamal key in which case it is 3072-bit.

It is possible to go beyond 4096-bit, but it requires more advanced knowledge and is not recommended because there is a law of diminishing returns on the strength of asymmetric ciphers.  Rather than going beyond 4096-bit, we're better off waiting for ECC keys to be incorporated into the stable branches of GPG.