HeeWon Chung

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This work addresses a basic problem of security systems that operate on very sensitive information, such as healthcare data. Specifically, we are interested in the problem of privately handling medical data represented by rational numbers. Considering the complicated computations on encrypted medical data, one of the natural and powerful tools for ensuring(More)
Biometric authentication methods are gaining popularity due to their convenience. For an authentication without relying on trusted hardwares, biometrics or their hashed values should be stored in the server. Storing biometrics in the clear or in an encrypted form, however, raises a grave concern about biometric theft through hacking or man-in-the middle(More)
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