I've been trying to find out which is the most appropriate PKI based cryptographic protocol for peer to peer communication. I do understand that they vary with respect to the peer to peer architecture model. It would be wonderful if someone is able to name a few and also the reason behind it.

  • $\begingroup$ What do you mean PKI protocol for P2P???What is the special property of P2P that PKI would do sth different than issuing certificates and public keys? $\endgroup$
    – curious
    Jun 1 '16 at 6:18
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    $\begingroup$ @curious The basic idea of a peer to peer communication being to eliminate the 3rd party where two 2 peers can directly communicate. Being able to validate a peer without the help of a 3rd party such as the certifying authority and other parameters of the cryptographic protocol which affect the communication such as security, speed , cost etc. Hence which protocol will be the most appropriate for such kind of a model. $\endgroup$
    – Giry raj
    Jun 1 '16 at 6:55
  • $\begingroup$ PKI is a trusted third party which certifies public keys $\endgroup$
    – curious
    Jun 1 '16 at 7:03
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    $\begingroup$ @curious No. PKI is a Public Key Infrastructure. It includes the entire ecosystem. It's not just a Certificate Authority (CA). $\endgroup$
    – Maarten Bodewes
    Jun 1 '16 at 7:12
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    $\begingroup$ What sort of a protocol are you looking for? PGP web of trust is an example of P2P PKI. $\endgroup$
    – otus
    Jun 1 '16 at 8:22

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