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Re: [ietf-dkim] RFC4871bis - whether to drop -- k: Key type

2009-06-02 14:46:40
On 6/2/09 7:41 PM, Murray Kucherawy wrote:
So if a=rsa-sha256, then the key I get from issuing a query based on s= and 
d= will be an RSA key, or it will fail to verify.  What k= offers is somewhat 
redundant except for the fact that I can avoid the crypto overhead if I can 
detect early on that it won't work anyway.
   

That's an important point, in the case of a DOS attack.  The next 
question is whether anybody implements it as such?

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