BART PRENEEL PHD THESIS

Both have received similar scepticism on its feasibility and lack of theoretic foundations. Shafi Goldwasser and Yael Tauman Kalai. For example, to create the equivalent of a smart-card-based AES encryption function in software, it does not suffice that the white-box implementation resists extraction of its embedded key, but it must also be hard to invert. Theoretic research on code obfuscation gained momentum with the seminal paper of Barak et al. Positive Results and Techniques for Obfuscation.

A security notion is a formal description of the security of a cryptographic scheme. Wyseur, and Bart Preneel: Nevertheless, this result does not exclude the existence of secure code obfuscators: The main difference between code obfuscation and white-box cryptography is that the security of the latter needs to be validated with respect to security notions. Jan 13, version: On the Impossibility of Obfuscation with Auxiliary Input.

ITCC 1pages Positive Results and Techniques for Obfuscation. White-box implementations and cryptanalysis results A selection of the state of the art: On the Impossibility of Obfuscation with Auxiliary Input.

  CAPF AC ESSAY TOPICS

A security notion is a formal description of the security of a cryptographic scheme. Obfuscation for Cryptographic Purposes. Shafi Goldwasser and Yael Tauman Kalai.

Bart Preneel

Similar theoretic approaches have been conceived for white-box cryptography in [Sax09]. Wee [Wee05] presented a provably secure obfuscator for a point function, which can be exploited in practice to construct authentication functionalities.

bart preneel phd thesis

Resources Slides March — slides PhD defense. It makes sense to define white-box cryptography accordingly since it reflects more reality. On the Im possibility of Obfuscating Programs. For example, a scheme is defined CPA-secure if an attacker cannot compute the plaintext from a given ciphertext, or KR-secure when the secret key cannot be recovered.

Whiteboxcrypto

Chand Gupta, and G. The main difference between code obfuscation and white-box cryptography is that the security of the latter needs to be validated with respect to security notions.

Ran Canetti and Mayank Varia. Both have received similar scepticism on its feasibility and lack of theoretic foundations.

bart preneel phd thesis

Nevertheless, this result does not exclude the existence of secure code obfuscators: Wyseur, and Bart Preneel: Theory White-box cryptography is often linked with code obfuscation, since both aim to protect software implementations.

  PTU PHD COURSEWORK RESULT 2012

For example, to create the equivalent of a smart-card-based AES encryption function in software, it does not suffice that the white-box implementation resists extraction of its embedded key, but it must also be hard to invert.

White-box cryptography

Theoretic research on code obfuscation gained pgeneel with the seminal paper of Barak et al. On Obfuscating Point Functions. Jan 13, version: Indeed, it does not suffice to only protect an application against extraction of embedded secret keys.

Research Academic research in white-box cryptography can be categorized into three activities.

Attacking an obfuscated cipher by injecting faults.