International Workshop on Cryptographic Techniques and E-Commerce
(CrypTEC '99)

Program Schedule


Monday
5 July 1999
Tuesday
6 July 1999
Wednesday
7 July 1999
Thursday
8 July 1999

Monday, 5 July 1999

Time Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
9:00 am Roderick WONG
Dean of Faculty of Science & Engineering
Welcoming Remarks
9:05 am Horace IP
Head of Department of Computer Science
Opening Remarks
9:15 am Eric BREWER, Ian GOLDBERG & David WAGNER
Practical Computer Security (Tutorial)
11:00 am Coffee Break
11:15 am (Tutorial) continued ...
12:00 pm Lunch
2:00 pm Doug TYGAR
Atomicity in Electronic Commerce (Tutorial)
3:00 pm Coffee Break
3:15 pm (Tutorial) continued ...
6:00 pm Reception
City Top, 9/F Amenities Building, City University of Hong Kong

Tuesday, 6 July 1999

PUBLIC SESSION

Time Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
9:30 am H K CHANG
President of City University of Hong Kong
Welcoming Remarks
9:40 am K H LAU
Director of Information Technology Services, The Government of Hong Kong SAR
Opening Remarks
9:50 am C K SIN
Legislative Councillor, (Information Technology)
Opening Remarks
10:00 am Adi SHAMIR
Building Secure Systems (Tutorial)
11:00 am Coffee Break
11:15 am (Tutorial) continued ...
12:00 pm Lunch
1:30 pm Ronald RIVEST
Naming, Certificates, and Revocation (Plenary Talk)
2:30 pm Coffee Break
  Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
Room Y4302
Academic Building Yellow Zone Level 4
2:45 pm Jeffrey HOFFSTEIN*, Daniel LIEMAN &
Joseph H SILVERMAN
Polynomial Rings and Efficient Public Key Authentication
Guozhen XIAO*, Shimin WEI,
Kyoki IMMAMURA & Kwok-Yan LAM
Algorithms for Determining the Linear Complexity of Binary Sequences with Period pn
3:15 pm Apol·lònia MARTÍNEZ NADAL* &
Josep Lluís FERRER GOMILA
Proposal for a European Directive on a Common Framework for Electronic Signatures and Providers of Related Services: Comments and Critical Reflections
Feng BAO* & Robert H DENG
An Efficient Fair Exchange Protocol with an Off-Line Semi-Trusted Third Party
3:45 pm Coffee Break
4:00 pm Shih-Hsu CHANG*, Fang-Hsuan CHENG &
Wen-Hsing HSU
The SEA Block Cipher Algorithm
Shouhuai XU,  Hong ZHU* &
Gendu ZHANG
Digital Signature Schemes Based on Graph
Isomorphism and any NP-Problem
4:30 pm T MOH*
A Fast Public Key System with Signature and Master Key Functions
Christopher J PAVLOVSKI &
Colin BOYD*
Efficient Batch Signature Generation Using Tree Structures
5:00 pm Giampaolo BELLA*
Modelling Security Protocols Based on Smart Cards
Zichen LI, Zhongxian LI &
Yixian YANG*
Modified the Harn Authentication Key Exchange Scheme

Wednesday, 7 July 1999

Time Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
9:00 am Adi SHAMIR
The Security of Block Ciphers (Plenary Talk)
  Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
Room Y4302
Academic Building Yellow Zone Level 4
10:00 am Lein HARN*, Hung-Yu LIN & Guang GONG
A Global Key Recovery System
Shaoquan JIANG* & Yufeng ZHENG
Partial Key Escrow Monitoring Scheme
10:30 am Coffee Break
10:45 am Sergio LOUREIRO* & Refik MOLVA
Function Hiding Based on Error Correcting Codes
Shao-Hua TANG* & Gang WEI
Directed User Authentication Schemes
11:15 am Shunsuke ARAKI*, Satoshi UEHARA & Kyoki IMAMURA
A Unified Method for Realizing Three Types of Restricted Confirmer Signatures Using Nyberg-Rueppel Message Recovery Signatures
Jian MA, Dongyang LONG*, Weijia JIA, Shixian LI & Duanning ZHOU
Improving System Security via Hyper-Codes Password Encryption
11:45 am Lein HARN* & Guang GONG
Elliptic Curve Digital Signatures and Accessories
Adrian PERRIG* & Dawn SONG
Hash Visualization: A New Technique to Improve Real-World Security
12:00 pm Lunch
2:00 pm Sightseeing Tour
Leave at University Circle

Thursday, 8 July 1999

Time Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
9:00 am Doug TYGAR
Secure Auctions (Plenary Talk)
10:30 am Coffee Break
Multi-Media Conference Room
Cheng Yick-Chi Building 4/F
Room Y4302
Academic Building Yellow Zone Level 4
10:45 am Josep Lluís FERRER-GOMILA* &
Llorenç Huguet i ROTGER
An Efficient Asynchronous Protocol for Optimistic Certified Electronic Mail
Sung-Ming YEN*, Liang-Tai HO &
Chiung-Ying HUANG
Internet Micropayment Based on Unbalanced One-Way Binary Tree
11:15 am Shingo MIYAZAKI & Kouichi SAKURAI*
A Parallel Withstanding Attack with Forging Key Certificates on an Electronic Cash System Based on Message-Recovery Blind Digital Signatures
Xuhua DING* & Kefei CHEN
A Secure Authorization Signature System
11:45 am Lianghai YANG* & Kefei CHEN
A New CA Structure Based on Group Signature
Boyoung LEE*, Miri JOO, Yeonyi CHOI & Dongho WON
An Efficient Proxy-based Authentication Scheme for Mobile Environment
12:00 pm Lunch
1:30  pm Goichiro HANAOKA*,
Tsuyoshi NISHIOKA, Yuliang ZHENG &
Hideki IMAI
An Optimized Credit-Payment System for Expressway Toll Collection Systems
Shingo MIYAZAKI & Kouichi SAKURAI*
A Bulletin-Board Based Digital Auction Scheme with Bidding Down Strategy - Towards Anonymous Electronic Bidding without Anonymous Channels nor Trusted Centers
2:00 pm Adrian PERRIG*
Efficient Collaborative Key Management Protocols for Secure Autonomous Group Communication
2:30 pm Coffee Break
2:45 pm Sung-Ming YEN*, Jong-Ming LEE,
Liang-Tai HO & Jack G LEE
PayFair: A Prepaid Internet Micropayment Scheme Promising Customer Fairness
Wen-Guey TZENG*
A Cryptographic Approach to World Wide Web Security
3:15 pm Yasushi KAWAKURA*, Marvin SIRBU,  Ian SIMPSON & J D TYGAR
Flexible and Scalable Credential Structures: NetBill Implementation and Experience
C H LEE, Xiaotie DENG & Huafei ZHU*
Deniable Encryption Schemes
3:30 pm Yongfei HAN*, Jiang ZHANG &
Peng-Chong TAN
Efficient Elliptic Curve Cryptosystems
Tak-Ming LAW*
An Encryption Algorithm and Key-Stream Generator for Chinese Text Messages by Character Internal Code Structure
3:45 pm Shimin WEI*, Yubin ZHANG,
Guozhen XIAO & Kwok-Yan LAM
Distribution of Linear Complexity for Periodic Sequences
Xiaotie DENG, C H LEE & Huafei ZHU*
A Proposal for Secure Hash Algorithm
4:00 pm **Zong-Duo DAI, Ding-Yi PEI, 
Jun Hui YANG & Ding-Feng YE
Cryptanalysis of a Public Key Cryptosystem Based on Conic Curves
Yupu HU, Guoqiang BAI*, Guozhen XIAO & Kwok-Yan LAM
On a Class of Logarithmic Sequences
4:15 pm Shingo MIYAZAKI & Kouichi SAKURAI*
Classification of Chaum-Fiat-Naor Paradigm Based Anonymous Electronic Cash Systems According to Vulnerability Against Insider-Attacks from Untrusted Authorities
Kai CHEN*, Yuqing ZHANG,
Guozhen XIAO & Kwok-Yan LAM
A Practical Efficient Anonymous Divisible E-Cash System
4:45 pm Yuqing ZHANG*, Kai CHEN &
Guozhen XIAO
Automated Analysis of Cryptographic Protocol Using SMV
N K BAO, W H WONG*, Tianji WANG, Yaotang LI, Shining YANG,
Shichao ZHANG, Shaowu FAN &
Huanrong WEN
Cryptogram in Digital Pixel Holography
6:30 pm Banquet
Chinese Restaurant, 8/F Amenities Building, City University of Hong Kong

*Paper Presenter
**Paper will be presented by Shaoquan JIANG

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