Tezos ecosystem developers have released a private blockchain payment prototype called TzEL on a testnet to prepare for quantum-computer attacks.
Cointelegraph reported on May 14 that the system is designed to protect encrypted transaction data and payment metadata by applying post-quantum cryptography and zk-STARK proofs.
TzEL focuses on countering “collect now, decrypt later” attacks that decrypt encrypted data gathered today in the future. Tezos applied the technology to obscure transaction information and encrypted payment metadata.
TzEL handles large proof sizes required by post-quantum cryptography based on Tezos’ data availability layer. Developers said this had been one of the main technical barriers to building an on-chain scalable quantum-resistant privacy system.
According to the Tezos white paper, the quantum-resistant zk-STARK proof used by TzEL is about 300KB. TzEL is currently running on the Tezos testnet, and the Tezos ecosystem’s transition to post-quantum cryptography is still at an early stage.
Hwang Chi-gyu
delight@d-today.co.kr