(Convertible) Undeniable Signatures without Random Oracles (2008)
Tsz Hon Yuen, Man Ho Au, Joseph K. Liu, Willy Susilo
Abstract. We propose a convertible undeniable signature scheme without random oracles. Our construction is based on Waters ’ and Kurosawa and Heng’s schemes that were proposed in Eurocrypt 2005....
(Convertible) Undeniable Signatures without Random Oracles (2008)
Tsz Hon Yuen, Man Ho Au, Joseph K. Liu, Willy Susilo
Abstract. We propose a convertible undeniable signature scheme without random oracles. Our construction is based on Waters ' and Kurosawa and Heng's schemes that were proposed in Eurocrypt...
Abstract. In many situations we want to enjoy condentiality, authenticity and non-repudiation of message simultaneously. A traditional approach to achieve this objective is to \sign-thenencrypt...
Identity based cryptography from pairings / (2006)
Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.
More Short Signatures without Random Oracles (2006)
We construct three new signatures and prove their securities without random oracles.
Practical Hierarchical Identity Based Encryption and Signature schemes without Random Oracles (2006)
Man Ho Au, Joseph K. Liu, Tsz Hon Yuen, Duncan S. Wong
In this paper, we propose a Hierarchical Identity Based Encryption scheme that is proven secure under the strongest model of [5] directly, without relying on random oracles. The size of the...
hierarchical identity-based) threshold ring signatures (2006)
Abstract. We construct the first several efficient threshold ring signatures (TRS) without random oracles. Specializing to a threshold of one, they are the first several efficient ring signatures...
Constant-size hierarchical identity-based signature/signcryption without random oracles (2006)
We construct the first constant-size hierarchical identity-based signature (HIBS) without random oracles- the signature size is O(λs) bits, where λs is the security parameter, and it is independent...
Ring signatures without random oracles (2006)
Joseph K. Liu, Victor K. Wei, Tsz Hon Yuen
Abstract. Since the formalization of ring signature by Rivest, Shamir and Tauman in 2001, there are lots of variations appeared in the literature. Almost all of the variations rely on the random...
Fast and proven secure blind identity-based signcryption from pairings (2005)
Abstract. We present the first blind identity-based signcryption (BIBSC). We formulate its security model and define the security notions of blindness and parallel one-more unforgeability (p1m-uf)....
Group Signature where Group Manager, Members and Open Authority are Identity-Based (2005)
Victor K. Wei, Tsz Hon Yuen, Fangguo Zhang
We present the first group signature scheme with provable security and signature size O(λ) bits where the group manager, the group members, and the Open Authority (OA) are all...
Constant-Size Hierarchical Identity-Based Signature/Signcryption without Random Oracles (2005)
We propose a hierarchical identity-based signature (HIBS) scheme which is provable without random oracle model. The signature size is independent to the level of the hierarchy.
Ring Signatures without Random Oracles (2005)
Joseph K. Liu, Victor K. Wei, Tsz Hon Yuen
Since the formalization of ring signature by Rivest, Shamir and Tauman in 2001, there are lots of variations appeared in the literature. Almost all of the variations rely on the random oracle model...
Signcryption in Hierarchical Identity Based Cryptosystem (2005)
Abstract. In many situations we want to enjoy confidentiality, authenticity and non-repudiation of message simultaneously. One approach to achieve this objective is to “sign-then-encrypt ” the...
Signcryption in Hierarchical Identity Based Cryptosystem (2005)
Key words: Data security, hierarchical identity-based signcryption, bilinear pairings
Fast and proven secure blind identity-based signcryption from pairings (2005)
Abstract. We present the first blind identity-based signcryption (BIBSC). We formulate its security model and define the security notions of blindness and parallel one-more unforgeability (p1m-uf)....
Ulf M511er and Lance 0ottrell. Mixmaster Protocol -- Version 2. Unfinished draft (2000)
Victor K. Wei, Tsz Hon Yuen, Fangguo Zhang
Abstract. We present the first group signature scheme with provable security and signature size O(λ) bits where the group manager, the group members, and the Open Authority (OA) are all...
Ulf M511er and Lance 0ottrell. Mixmaster Protocol -- Version 2. Unfinished draft (2000)
Victor K. Wei, Tsz Hon Yuen, Fangguo Zhang
Abstract. We present the first group signature scheme with provable security and signature size O(λ) bits where the group manager, the group members, and the Open Authority (OA) are all...