CAREER: Non-Black-Box Cryptography: Defending Against and Benefiting from Access to Code

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Cryptography is an essential and widespread tool for providing information security. Traditional cryptographic models assume only black-box, or input/output access to devices, thereby limiting the class of attacks. In practice, an attacker may obtain non-black-box access to a device and attack a particular algorithm or specific implementation such as through timing or fault injection attacks. Exploiting non-black-box access has been a remarkably effective technique for compromising cryptosystems.This project investigates mechanisms to protect against such non-black box attacks. The research goals of this proposal are: (1) design and analyze new algorithms for secure computation in threat models that capture non-black-box attacks, and (2) provide a better understanding of the effectiveness of non-black-box techniques in the construction of cryptosystems.