Ran Canetti and Mayank Varia. On Obfuscating Point Functions. White-box implementations and cryptanalysis results A selection of the state of the art: Obfuscation for Cryptographic Purposes. Similar theoretic approaches have been conceived for white-box cryptography in [Sax09]. Research Academic research in white-box cryptography can be categorized into three activities.

ITCC 1 , pages Ran Canetti and Mayank Varia. 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. Similar theoretic approaches have been conceived for white-box cryptography in [Sax09]. A security notion is a formal description of the security of a cryptographic scheme. 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.

On the Impossibility of Obfuscation with Auxiliary Input. Wyseur, and Bart Preneel: Both have received similar scepticism on its feasibility and lack of theoretic foundations.

tesis Indeed, it does not suffice to only protect an application against extraction of embedded secret keys. 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.

## Bart Preneel

Chand Gupta, and G. Resources Slides March — slides PhD defense. Similar theoretic approaches have been conceived for white-box cryptography in [Sax09].

Theoretic research on code obfuscation gained momentum with the seminal paper of Barak et al. 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.

Ran Canetti and Mayank Varia.

# Bart Preneel | SBA Research

Research Academic research in white-box cryptography can be categorized into three activities. A security notion is a formal description of the security of a cryptographic scheme. ITCC 1pages Nevertheless, this result does not exclude the existence of secure code obfuscators: Positive Results and Techniques for Obfuscation.

Shafi Goldwasser hpd Yael Tauman Kalai.

## Whiteboxcrypto

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.

On Obfuscating Point Functions. Obfuscation for Cryptographic Purposes. On the Im possibility of Obfuscating Programs. Wee [Wee05] presented a provably secure obfuscator for a point function, which can be exploited in practice to construct authentication functionalities.

White-box implementations and cryptanalysis results A selection of the state of the art: It makes sense to define white-box cryptography accordingly since it reflects more reality.

Attacking an obfuscated cipher by injecting faults. Jan 13, version: Theory White-box cryptography is often linked with code obfuscation, since both aim to protect software implementations.