RE: On the need for presence service identifiers

"Adrian Bateman" <[email protected]>
Newsgroups gmane.ietf.impp
Organization VisionTech Limited
Message-ID <005501c24859$406fc070$6405010a@ADRIANXP> 
On 20 August 2002 15:01, John D. Ramsdell wrote:
> For case 1, there are two possibilities: (a) the presence service and
> a user share a private key, or (b) the presence service has it's own
> certificate and private key for each user.  In other words, there are
> two certificates for each presentity.

Why does there need to be two certificates? If the presence service is
doing the signing, only it needs the certificate.

Adrian.
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