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ISW
2004
Springer
10 years 1 months ago
Image Recognition CAPTCHAs
CAPTCHAs are tests that distinguish humans from software robots in an online environment [3, 14, 7]. We propose and implement three CAPTCHAs based on naming images, distinguishing ...
Monica Chew, J. D. Tygar
ISW
2004
Springer
10 years 1 months ago
How to Break and Repair a Universally Composable Signature Functionality
Abstract. Canetti and Rabin recently proposed a universally composable ideal functionality FSIG for digital signatures. We show that this functionality cannot be securely realized ...
Michael Backes, Dennis Hofheinz
ISW
2004
Springer
10 years 1 months ago
Universally Composable Secure Mobile Agent Computation
We study the security challenges faced by the mobile agent paradigm, where code travels and performs computations on remote hosts in an autonomous manner. We define universally co...
Ke Xu, Stephen R. Tate
ISW
2004
Springer
10 years 1 months ago
The Obfuscation Executive
Abstract. Code obfuscations are semantics-preserving code transformations used to protect a program from reverse engineering. There is generally no expectation of complete, long-te...
Kelly Heffner, Christian S. Collberg
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