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Consider the following scenario:

There are two users: A and B. Users A and B generate a pair of their own public and private keys PUBa, PRIa and PUBb, PRIb. There is one trusted center(TC) that provides authenticity to public keys of user A and B.

When user A wants to communicate with user B, user A asks for public key of user B via TC. TC will provide user B's public key to user A with the help of Diffie-Hellman Algorithm. Both users can generate their shared secret key for communication, and for knowing whether the both parties are intended or not, they will use the DSS algorithm.

If I use this technique, is it possible to apply a Certificateless Signature Scheme?

Any hints towards guidelines, references, or papers are much appreciated…

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closely related: Certificateless cryptography. Indeed, the beginning of this question sounds like this is a continuation of that on, in which case it might be better off as an edit? –  figlesquidge Nov 7 '13 at 12:14
    
I do not see how this scenario is specifically related to certificateless signatures. –  DrLecter Nov 7 '13 at 15:51
    
Since I am beginner for these concepts, I got above question in my mind. So,Please explain why this scenario does not seems related to Certificateless signature..? so that I will be able to move further ahead. –  Ravi Nov 7 '13 at 17:11
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Looks like you've asked that already in your question "Certificateless cryptography". Btw.: you might want to accept answers that best fit your questions (like this one). Otherwise, your questions will remain in an "unanswered" status! For more information, please read the About page. –  e-sushi Nov 7 '13 at 17:44
    
I'm not clear on what a "Certificateless Signature Scheme" would even be. $\hspace{1.88 in}$ –  Ricky Demer Nov 8 '13 at 2:26
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