Vitalik: Local mixing is poised to become a novel encryption obfuscation pathway, applicable to randomized circuit obfuscation and public-key encryption.

TechFlow reports, on August 21, Vitalik Buterin published an article introducing "Local Mixing," the third major approach in the field of cryptographic obfuscation. Unlike traditional cryptographic paths based on elliptic curves, prime factorization, or lattices, this scheme draws inspiration from symmetric cryptography and hash function design paradigms. Through processes such as invertibility, hardening, mixing, splitting, cross-wiring, and gadgetization, it conceals its internal structure while preserving the circuit's functionality.

The article notes that Local Mixing remains in its early stages and has not yet been fully proven secure, but it holds potential applications in random circuit obfuscation. It could further facilitate the construction of post-quantum public-key encryption schemes and potentially offer a new path toward general indistinguishability obfuscation. Vitalik stated that this research direction is akin to attempting to invent new fundamental cryptographic primitives. By integrating AI to accelerate cryptanalysis and verification, the maturation timeline for novel cryptographic constructions could potentially be shortened in the future.