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It has been shown that for two different multipartite unitary operations U1 and U2, when tr(U1†U2) = 0, they can always be perfectly distinguished by local operations and classical communication in the single-run scenario. However, how to find the detailed scheme to complete the local discrimination is still a fascinating problem...
An advanced threshold secret sharing scheme to identify cheaters is proposed in this paper by using authentication codes. The performance of the scheme is discussed. The results show that in the scheme the valid shareholders not only can identify the impersonation of an adversary, but also are able to detect cheating of some valid shareholders. In particular one honest shareholder is able to detect...
Signcryption is a technology that combines digital signature and encryption in a logical manner. This paper proposes a certificateless signcryption scheme. The scheme not only realizes the property of the certificateless, but also solves the inherent problem of key escrow in identity based public key cryptography. The results of analysis show that the scheme has the properties of public verifiability,...
In the (t, n) threshold proxy signature, the signing key is distributed to members of a signature group, and at least t proxy signers can cooperatively generate the signature. This makes proxy signature more secure. If we combine the IDbased cryptography system and threshold proxy signature, user's public key contains his identification information. Hence, we don't need certificate awarded by CA....
In this paper, we point out Partially Entangled States quantum dialogue, which enables both legitimate parties to exchange their 2 bit secret messages in a direct way. Two step security check guarantees the security of this protocol. Partially Entangled States used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel...
In this paper, we point out Partially Entangled States quantum dialogue, which enables both legitimate parties to exchange their 2 bit secret messages in a direct way. Two step security check guarantees the security of this protocol. Partially Entangled States used as information carrier are easy to prepare and store, there is no need to transmit quantum states with secret message in quantum channel...
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