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Crypt Seminar

The Crypt Seminar is a regular seminar series, conducted by the Centre for Computer and Information Security Research (CCISR) at University of Wollongong. It presents talks by invited speakers, research students and staff. Everyone is welcome to attend.

If you wish to present a seminar in this series, please contact the Crypt Seminar Coordinator: Mohammad Reza Reyhanitabar.

Upcoming Seminar

Title: Digital Signatures and Their Reduction Proof
Speaker: Fuchun Guo (University of Wollongong)

Day: Tuesday 13 October 2009
Location: Building 3. Common Staff Room
Time: 13.30-14.30

Abstract: A digital signature scheme is said secure, if forging a valid signature is not easier than solving a hard mathematical problem. In a security proof of signatures, if an adversary can successfully forge a valid signature with probability $\epsilon$, one can take advantage of its ability to solve the underlying hard mathematical problem successfully with probability $\epsilon'$. This process is called security reduction.
IIn this seminar, we revisit the security model for digital signatures and give some discussions associated with this reduction proof.

Previous Seminars

• How to Construct Identity-Based Signatures without the Key Escrow Problem (Tuesday 29 September 2009)
• HScalable Watermarking for Image Authentication (Tuesday 15 September 2009)
• A Review on the Cube Attack (Tuesday 1 September 2009)
• Identity-based Identification Scheme Secure Against Concurrent-Reset Attacks without Random Oracles (Tuesday 18 August 2009)
• Analysis of Property-Preservation Capabilities of the ROX and ESh Hash Domain Extenders (Tuesday 4 August 2009)
• Certificate-Based Signatures:  New Definitions and A Generic Construction from Certificateless Signatures (Wednesday 10 June 2009)
• Dynamic Universal Accumulators for DDH Groups and Their Application to Atttribute-Based Anonymous Credential Systems (Wednesday 27 May 2009)
• A General Definition of Malware (Wednesday 20 May 2009)
• Enhanced Target Collision Resistant Hash Functions Revisited (Wednesday 29 April 2009)
• New security results from an RFID privacy model proposed in ASIACRYPT’ 07 (Wednesday 15 April 2009)
• Threshold Attribute-Based Signatures and Their Application to Anonymous Credential Systems (Wednesday 1 April 2009)
• Security for Cloud Computing (Wednesday 18 March 2009)
• A Key Establishment Scheme for Aggregating Sensor Networks (Friday, 12 December 2008 )
• How to Balance Privacy with Authenticity (Wednesday 26 November 2008)
• Securing Wireless Mesh Networks with Ticket-Based Authentication (Wednesday 12 November 2008)
• Server-Aided Verification Signatures: Definitions and New Constructions (Tuesday 28 October 2008)
• Analysis of Random Oracle Instantiation for a SAS-Based Message Authentication Protocol (Wednesday 15 October 2008)
• The Need for Deniability in Identification Schemes (Wednesday 17 September 2008)
• Efficient Optimistic Fair Exchange Secure in the Multi-user Setting and Chosen-key Model without Random Oracles (Wednesday 13 August 2008)
• Constant-Size Dynamic k-Times Anonymous Authentication (Tuesday 24 June 2008)
• Traceable Signatures with Sceptical Tracer (Tuesday 10 June 2008)
• Provably Secure Identity-based Undeniable Signatures with Selective and Universal Convertibility (Tuesday 27 May 2008)
• Further Observations on Optimistic Fair Exchange Protocols in the Multi-user Setting (Tuesday 13 May 2008)
• Privacy-Enhanced Revocation in Anonymous Authentication: BLAC and Beyond (Tuesday 29 April 2008 )
• Construction of Universal Designated-Verifier Signatures and Identity-Based Signatures from Standard Signatures (Tuesday 15 April 2008)
• Modelling Inter-organization Network Security (Tuesday 18 March 2008 )
• Cryptanalysis of Trivium Stream Cipher (Tuesday 4 March 2008)