A re-keying solution using shared key tree among multicast sessions in same multicast group was presented in this paper to make re-keying cost be independent of multicast sessions amount,and solve the problem that group with multiple sessions had low efficiency when key was updated.

A publicly verifiable vector space secret sharing scheme;

This paper discusses the technique of multi-key cryptography scheme?secret sharing subject to RSA public key cipher algorithm.

A non-interactive zero-knowledge proof protocol based on Elliptic Curve Encryption was proposed,and based this protocol,a publicly verified secret sharing scheme was proposed too.

A new threshold key sharing authentication for mobile Ad Hoc network;

A storage-optimal key sharing scheme with authentication is presented based on bilinear mapping.

This paper is emphasis on optimization of(m,n) key share scheme and then it puts forward the minimum of w and the approach to distribute sub key.

This paper analyses the process of pre-shared key authentication, discusses its security issues, and presents an improved pre-shared key mechanism for two-way authentication to authenticate the remote users in IKE.

The pre-shared key authentication in IKEv2 protocol is susceptible to man-in-the-middle attack and off-line dictionary attack,which makes the identity of the initiator and the pre-shared key leak out.