Tezos developers launched a post-quantum private payments prototype using zk-STARK proofs as blockchain networks increase preparations for future quantum computing threats.
The testnet system uses post-quantum cryptography and zk-STARK proofs to protect encrypted transaction data from future quantum computing attacks. Developers behind the Tezos ecosystem launched a testnet prototype for private blockchain payments designed to resist future quantum computing attacks, as concerns grow that advances in quantum technology could eventually compromise existing blockchain privacy systems.
The prototype, called TzEL, uses post-quantum cryptography and zk-STARK proofs to shield transaction data and encrypted payment metadata that could otherwise be vulnerable to “harvest now, decrypt later” attacks, where encrypted blockchain data collected today is decrypted in the future, according to Tezos. The prototype also uses Tezos’ Data Availability Layer to handle the larger proof sizes associated with post-quantum cryptography, which developers say has been one of the main technical barriers to building scalable quantum-resistant privacy systems onchain.
, the quantum-resistant zk-STARK proofs used by TzEL are roughly 300KB in size, significantly larger than privacy proofs commonly used in existing blockchain systems. TzEL is currently live on the Tezos testnet and remains in development, while the broader Tezos ecosystem is still in the early stages of transitioning toward post-quantum cryptography.
The crypto industry increased efforts to prepare for quantum computing risks throughout April, as concerns continue to grow over the long-term security of blockchain cryptographic systems.of a post-quantum signature system called Falcon, designed to help protect the blockchain against future quantum threats while minimizing performance tradeoffs. However, the researchers warned that proof-of-stake blockchains may face greater exposure to quantum computing risks because of the signature systems used by network validators. Kraken’s $600M stablecoin firm, Huione scandal deepens: Asia Express
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