the best signature type someone can give me

[Christoph Anton Mitterer]

David Shaw wrote:

>>If so,... should I (for security/cryptography reasons) ask users to sign 
>>my key only with SHA512 (or whatever is considered as the currently 
>>strongest hash)? And/or should I sign others UIDs only with SHA512 (..) ?
>>    
>>
>This is up to you, but note that most OpenPGP programs don't support
>SHA512 yet.  Also note that most people have a DSA primary key and
>thus can't use any hash larger than 160 bits.
>  
>
Uhm,... perhaps a stupid question,.. but:
If DSA keys are 1024 bit large,... why is this only enought for 160 bit 
hashes?
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