Re: 2047 bit keys in PGP

[futplex@pseudonym.com (Futplex)]

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Jiri Baum writes:
> This is not really the case. The way PGP is set up, the operations
> that take a long time are those that involve the secret key - signing
> and decrypting. Encrypting and checking signatures are much quicker.
> 
> In other words, the person that chooses the key is the one that'll
> be most delayed.
> 
> (I think it's something to do with the relative sizes of the exponents.)

Right. We can (generally) make a "small" choice of the public exponent e, with
a corresponding "large" choice of the private exponent d, rather than having
them both "medium-sized". A "small" choice of d, however, would be easy to 
guess, which is a Bad Thing (tm).

Futplex <futplex@pseudonym.com>
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