T
Tat Wing Chim
Researcher at University of Hong Kong
Publications - 32
Citations - 982
Tat Wing Chim is an academic researcher from University of Hong Kong. The author has contributed to research in topics: Authentication & Vehicular ad hoc network. The author has an hindex of 13, co-authored 31 publications receiving 865 citations.
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Journal ArticleDOI
SPECS: Secure and privacy enhancing communications schemes for VANETs
TL;DR: This paper provides a software-based solution which makes use of only two shared secrets to satisfy the privacy requirement and gives lower message overhead and at least 45% higher successful rate than previous solutions in the message verification phase using the bloom filter and the binary search techniques.
Journal ArticleDOI
VSPN: VANET-Based Secure and Privacy-Preserving Navigation
TL;DR: This paper proposes a navigation scheme that utilizes the online road information collected by a vehicular ad hoc network (VANET) to guide the drivers to desired destinations in a real-time and distributed manner and makes use of the idea of anonymous credential to achieve this goal.
Journal ArticleDOI
PRGA: Privacy-Preserving Recording & Gateway-Assisted Authentication of Power Usage Information for Smart Grid
TL;DR: A scheme such that even the control center (power operator) does not know which user makes the requests of using more power or agreements of using less power until the power is actually used, and the end user can prove to the power operator that it has really requested to use morePower or agreed to use less power earlier.
Proceedings ArticleDOI
PASS: Privacy-preserving authentication scheme for smart grid network
TL;DR: This paper derives a privacy preserving authentication scheme using a tamper-resistant device at the smart appliance and pseudo identities, and shows that the authentication process is made very efficient by means of Hash-based Message Authentication Code (HMAC).
Proceedings ArticleDOI
Credential-Based Privacy-Preserving Power Request Scheme for Smart Grid Network
TL;DR: This paper proposes a scheme that preserves users' privacy information, including their daily electricity usage pattern from third parties as well as from the power operator, and ensures that authentication can be properly done.