PANews reported on December 12th, citing DL News, that in a revised paper published on December 5th, Blockstream researchers Mikhail Kudinov and Jonas Nick exploredPANews reported on December 12th, citing DL News, that in a revised paper published on December 5th, Blockstream researchers Mikhail Kudinov and Jonas Nick explored

Bitcoin researchers are focusing on using "hash-based signatures" for quantum-resistant upgrades.

2025/12/12 09:22

PANews reported on December 12th, citing DL News, that in a revised paper published on December 5th, Blockstream researchers Mikhail Kudinov and Jonas Nick explored several methods to upgrade the Bitcoin blockchain to make it quantum resistant. They argue that hash-based signatures are a highly attractive post-quantum solution because their security relies solely on the assumption of a hash function similar to Bitcoin's fundamental design. In an email to the Bitcoin developer mailing list introducing their research, Kudinov stated, "These schemes underwent extensive cryptanalysis during the post-quantum standardization process at the National Institute of Standards and Technology (NIST), which increases confidence in their robustness."

Hash-based signatures rely on hash functions, mathematical algorithms considered quantum-resistant because, unlike the public-key cryptography used in Bitcoin, hash functions are difficult for quantum algorithms to break. Hash functions can be secured by simply increasing their output size to handle the potential brute-force searches by quantum computers, thus expanding the search space and ensuring the security of applications like digital signatures. However, how developers will implement hash-based signatures is still under discussion. Decisions need to be made regarding issues such as keeping verification costs low, standardizing various hash-based signature implementations, and whether the entire network's history is needed to verify transactions.

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The post UK FCA Plans to Waive Some Rules for Crypto Companies: FT appeared on BitcoinEthereumNews.com. The U.K.’s Financial Conduct Authority (FCA) has plans to waive some of its rules for cryptocurrency companies, according to a Financial Times (FT) report on Wednesday. However, in another areas the FCA intends to tighten the rules where they pertain to industry-specific risks, such as cyber attacks. The financial watchdog wishes to adapt its existing rules for financial service companies to the unique nature of cryptoassets, the FT reported, citing a consultation paper published Wednesday. “You have to recognize that some of these things are very different,” David Geale, the FCA’s executive director for payments and digital finance, said in an interview, according to the report, adding that a “lift and drop” of existing traditional finance rules would not be effective with crypto. One such area that may be handled differently is the stipulation that a firm “must conduct its business with integrity” and “pay due regard to the interest of its customers and treat them fairly.” Crypto companies would be given less strict requirements than banks or investment platforms on rules concerning senior managers, systems and controls, as cryptocurrency firms “do not typically pose the same level of systemic risk,” the FCA said. Firms would also not have to offer customers a cooling off period due to the voltatile nature of crypto prices, nor would technology be classed as an outsourcing arrangement requiring extra risk management. This is because blockchain technology is often permissionless, meaning anyone can participate without the input of an intermediary. Other areas of crypto regulation remain undecided. The FCA has plans to fully integrate cryptocurrency into its regulatory framework from 2026. Source: https://www.coindesk.com/policy/2025/09/17/uk-fca-plans-to-waive-some-rules-for-crypto-companies-ft
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BitcoinEthereumNews2025/09/18 04:15