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first_img Zcash developer program supports quantum-resistant signatures in January, initial protection for transparent transactions

The Zcash development team plans to add post-quantum signature support to the network in January. Zakura engineer Roman Akhtariev stated in an engineering blog that the team plans to implement post-quantum signature opcodes in Zcash in January. These opcodes will enable Zcash to verify hash-based signatures, thereby resisting quantum computing attacks. The team has not yet confirmed a specific network activation date. This upgrade aims to prevent attackers from using current public keys to reverse-engineer and forge payment authorizations from wallet owners.The initial phase of this upgrade will protect transparent transactions. Zcash has two payment methods: shielded payments hide the sender, receiver, and amount; transparent payments are similar to Bitcoin, where addresses and amounts are visible on the chain. According to CoinDesk, based on ZecStats data, approximately 11.96 million of the 16.98 million issued ZEC are stored in the transparent pool, accounting for about 70%. The January plan primarily targets this public portion. Additionally, Zakura has developed a private query tool that allows wallets to check balances without exposing associated addresses to the server; the experimental version is available in the "Private queries" settings of the Zcash wallet Vizor.Before the release of Zakura's engineering article, Ethereum researcher Justin Drake warned holders on Thursday to prepare for what he called "bunker mode," stating that in the worst-case scenario, AI could find shortcuts to break the mathematical protections of Bitcoin and Ethereum wallets in "months rather than years."

BSC releases a report on quantum-resistant cryptography migration: transaction signatures have switched to ML-DSA-44, TPS testing has decreased by about 40%-50%

On May 14, BNB Chain released the "BSC Post-Quantum Cryptography Migration Report," stating that it has completed the migration testing for quantum-resistant cryptography for transaction signatures and the consensus layer, using the NIST standardized post-quantum signature algorithm ML-DSA-44 (Dilithium) and the pqSTARK aggregation scheme.The report shows that BSC has replaced transaction signatures from ECDSA to ML-DSA-44 and switched consensus voting aggregation from BLS12-381 to pqSTARK to address the potential threats posed by future quantum computing to the existing elliptic curve cryptography system. However, post-quantum signatures also significantly increase the on-chain data volume: the size of a single transaction has increased from about 110 bytes to approximately 2.5KB; the block size in a 2000 TPS scenario has increased from about 130KB to around 2MB; and the TPS in the testing environment has decreased by about 40%-50%.BSC stated that the current network bottleneck mainly comes from the larger transaction data propagation, rather than the consensus protocol itself. Meanwhile, the consensus layer aggregation still maintains high efficiency, with pqSTARK achieving a signature compression ratio of about 43:1, and the additional burden on validators remains within a controllable range. The report concludes that existing technology can achieve "quantum-resistant" deployment for blockchain, but future issues related to network bandwidth and data scalability still need to be addressed.

first_img The Ethereum Foundation launches the Clear Signing open standard to promote the readability of transaction signatures

The Ethereum Foundation officially launched the Clear Signing open standard on Tuesday, aimed at replacing the unreadable hexadecimal strings displayed when wallet users sign transactions with human-readable transaction content.This standard is centered around ERC-7730. When a wallet supports this standard, it will read the descriptor file of the contract and reconstruct the raw transaction data into understandable content, such as displaying a Uniswap V3 swap as sending 1,000 USDC and receiving at least 0.42 WETH. ERC-8176 adds an integrity certification layer on top of this, allowing auditors to publish signature certification confirming the accuracy of the descriptors. Participants include hardware wallets (Ledger, Trezor), software wallets (MetaMask, WalletConnect), security companies (Cyfrin), and infrastructure (Fireblocks), among others.Blind signing has been a significant cause of losses in crypto assets. The $1.5 billion vulnerability at Bybit in February 2025 and the approximately $235 million WazirX incident both involved signers approving transactions that did not reflect the true intent. Ledger initiated this project in 2021, formalized it as ERC-7730 in 2024, and transferred governance to the foundation earlier this year to ensure the neutrality of the standard. The ERC-7730 V2, released in April 2026, has expanded its coverage to cross-chain use cases, software wallets, and confidential token primitives.
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