Lifeng Guo

4Xiangjing Wang
4Wensheng Xiang
4Chongxi Liu
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A nominative signature scheme allows a nominator (or signer) and a nominee (or verifier) to jointly generate and publish a signature in such a way that only the nominee can verify the signature and if necessary , only the nominee can prove to a third party that the signature is valid. In a recent work, Huang and Wang proposed a new nominative signature(More)
—A new ID-based group signature scheme, in which group managers and group members are all ID-based, is presented in this paper. Our scheme is obtained by using a new way to the construction of group signature schemes and based on an ID-based signature scheme from bilinear pairing. Due to the nice and simple constructive method and the sound properties of(More)
It has always been a critical issue to find efficient methods for fast revocation of a user's identity in identity (ID)-based cryptosystems. Unfortunately, none of the previous ID-based cryptography can find a practical way. Libert et al. and Baek et al. respectively propose an ID-based mediated encryption scheme based on the practical ID-based encryption(More)
In 1999, Sun et al. proposed a new (t, n) threshold proxy signature scheme based on Zhang's threshold proxy signature scheme. But in 2003 Hsu et al. pointed out that Sun's scheme suffered from a drawback and demonstrated an improvement to counter it. In this paper we point out that Hsu's scheme suffers from an insider attack against their scheme. That is, a(More)
A novel actinomycete, designated strain 2C-HV3T, was isolated from the cuticle of Camponotus japonicus Mayr collected from Harbin, Heilongjiang province, north China and characterised using a polyphasic approach. The 16S rRNA gene sequence of strain 2C-HV3T showed that it has high sequence similarities with Microbispora bryophytorum NEAU-TX2-2T (99.9 %),(More)
A novel nocardioform actinomycete, designated strain NEAU-GQTH2-3T, was isolated from muddy soil collected from a stream in Qitaihe, Heilongjiang Province, northeast China and characterized using a polyphasic approach. Phylogenetic analysis based on the 16S rRNA gene sequence demonstrated that the organism should be assigned to the genus Kribbella and forms(More)