~/talk

White-box Cryptography

Talkat droidcon Berlin 2023 · 2023-07-05..07-07· [security, cryptography]
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slides:none on file

White‑box cryptography claims to keep secret keys safe even when attackers control the device, exposing binaries and memory; the library protects static and dynamic keys, performs encryption, wrapping, signing, key generation/derivation/agreement, and claims it withstands DFA and DCA. A simple masking example adds random X and Y to inputs A and B so the device computes C′ and the original C is recovered offline, illustrating a homomorphic-style approach. The Z Key Box is implemented entirely in software, runs wherever a C++ compiler exists and offers Java/JavaScript bindings.

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