Re: Vanity Key@@sig

2013-04-08 Thread Melvin Carvalho
On 3 April 2013 19:39, Andreas Mattheiss wrote:

> Well, uhm, if it's really important to you:
>
> The concept of hashes/fingerprints/etc. is that it is (next to) impossible
> to find an entity-to-be-hashed (here a key) if you specify the hash. In
> fact a hash function that allows you to do this would be cryptographically
> frowned upon.
>
> However, there is nothing that stops you from generation a gazillon of
> keys, until you - by chance - get one with a hash you like.
>
> This brute force approach is what is behind bitcoin mining or hashcashing
> email messages - the latter, sadly, an idea ignored by the general public.
>

Yes, tho I think hashcash is used sometimes in spam assassin


>
> Regards
> Andreas
>
> --
> LISTER: Me. No another one for you. Rear Admiral Lieutenant General Rimmer.
>
>
>
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Re: Vanity Key@@sig

2013-04-03 Thread Andreas Mattheiss
Well, uhm, if it's really important to you:

The concept of hashes/fingerprints/etc. is that it is (next to) impossible
to find an entity-to-be-hashed (here a key) if you specify the hash. In
fact a hash function that allows you to do this would be cryptographically
frowned upon.

However, there is nothing that stops you from generation a gazillon of
keys, until you - by chance - get one with a hash you like. 

This brute force approach is what is behind bitcoin mining or hashcashing
email messages - the latter, sadly, an idea ignored by the general public.

Regards
Andreas 

-- 
LISTER: Me. No another one for you. Rear Admiral Lieutenant General Rimmer.



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