getting rid of blowfishes (was Re: Windoze PGP Compatability)

[Pierre-Henri SENESI]

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Andreas Schamanek a écrit:
> 
> On Mon, 24 Apr 2000, L. Sassaman wrote:
> 
> > > On Mon, 24 Apr 2000, L. Sassaman wrote:
> > >
> > > > Also, disabling blowfish altogether is probably a good idea.
> >
> > Because it isn't as well reviewed as 3DES, well respected as CAST5 or
> > IDEA, or as fast as Twofish. It's not supported by PGP for these reasons,
> > and using it will cause potential problems if you intend to be able to use
> > a GnuPG generated keypair with PGP.
> 
> Actually, I like blowfishes (I mean the fish) but I understand that
> there are better alternatives when dealing with encryption.
> 
> How can I move from the default BLOWFISH to some other cipher? Since my
> key is encrypted with BLOWFISH I can't just disable it, can I?
> 
> I thought the trick is to remove the password, export the keys and
> import them again with BLOWFISH disabled. But when I try to reprotect my
> secret key GnuPG says
> 
>   gpg: protect_secret_key failed: unknown cipher algorithm
> 
> Probably, I misunderstood some basics. Any clarification appreciated.
> 
> Last question: If we should avoid BLOWFISH what cipher should we use?
> I know that this question cannot be dealt with in detail here. But maybe
> somebody can write a short note about her or his preferences (without
> being flamed by others ;) from an average user's point of view.
> 
> The alternatives so far are: 3DES, CAST5 and TWOFISH.
> 
> Regards,
> 
> -- Andreas

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