We provide the first description of and security model for authenticated key exchange protocols with predicate-based authentication. In addition to the standard goal of session key security, our security model also provides for credential privacy: a participating party learns nothing more about the other party’s credentials than whether they satisfy the given predicate. Our model also encompass...

In ICA3PP 2009, Xinglan Zhang proposed two one-round authenticated key exchange protocols and proved their security in the standard model. In this paper, we analyze these two protocols and find that both of them exist some flaws.

Recently, Coron presented an attack of GGH15 multilinear maps, which breaks the multipartite Diffie-Hellman key exchange protocol based on GGH15. In this paper, we describe a variation of GGH15, which seems to thwart known attacks.

General cryptographic schemes are presented where keys can be one-time or ephemeral. Processes for key exchange are derived. Public key cryptographic schemes based on the new systems are established. Authentication and signature schemes are easy to implement. The schemes may be integrated with error-correcting coding schemes so that encryption/coding and decryption/decoding may be done simultan...