Re: Disclosure Signature (dratf-03 to 04)

Sorry for the delay -- I've been very busy with an ITU-T meeting and haven't had 
access to E-mail.

We dropped that field because the algorithm should be available from the certificate.

Naohiro Fukuda wrote:
> Hello,
> 
> I have a question;
> 
> Draft-03 contained "signature algorithm field" in 2.8.3, but Draft-04 
> deleted it.
> 
> -> Could you tell me the reason?
> 
> I think when we check the validity of signature,
> 
>  1) get a public key from true certificate
>  2) use the public key to decrypt the signature and get out a hash value
>  3) calculate the hash of the entire key disclosure list
>  4) match the both of the hashes to check the validity
> 
> In this case, if we do not signature algorithm, I think we can not do 3).
> 
> Best Regards,
> 
> 
> ---------------------------------------------------------------------------------------- 
> 
> Naohiro Fukuda
> Matsushita Electric Works, Ltd.
> Network Security Team
> New Business Promotion Division
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>