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» Practical Secure Function Evaluation
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CCS
2010
ACM
15 years 24 days ago
Attacks and design of image recognition CAPTCHAs
We systematically study the design of image recognition CAPTCHAs (IRCs) in this paper. We first review and examine all IRCs schemes known to us and evaluate each scheme against th...
Bin B. Zhu, Jeff Yan, Qiujie Li, Chao Yang, Jia Li...
108
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CCS
2011
ACM
14 years 17 days ago
Privacy and accountability for location-based aggregate statistics
A significant and growing class of location-based mobile applications aggregate position data from individual devices at a server and compute aggregate statistics over these posi...
Raluca A. Popa, Andrew J. Blumberg, Hari Balakrish...
126
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CISS
2007
IEEE
15 years 7 months ago
On Capacity of Automatic Target Recognition Systems Under the Constraint of PCA-Encoding
Limiting capabilities of practical recognition systems are determined by a variety of factors that include source encoding techniques, quality of images, complexity of underlying ...
Xiaohan Chen, Natalia A. Schmid
CCS
2009
ACM
15 years 7 months ago
Behavior based software theft detection
Along with the burst of open source projects, software theft (or plagiarism) has become a very serious threat to the healthiness of software industry. Software birthmark, which re...
Xinran Wang, Yoon-chan Jhi, Sencun Zhu, Peng Liu
104
Voted
ACSAC
2010
IEEE
14 years 10 months ago
Defending DSSS-based broadcast communication against insider jammers via delayed seed-disclosure
Spread spectrum techniques such as Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping (FH) have been commonly used for anti-jamming wireless communication. However, trad...
An Liu, Peng Ning, Huaiyu Dai, Yao Liu, Cliff Wang