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An Eight-Year Investment Takes a Sharp Turn: Why Did Ethereum Suddenly Abandon Poseidon?

On August 13, Ethereum researcher Justin Drake announced a significant shift in Ethereum's Layer-1 cryptographic roadmap: abandoning the SNARK-friendly hash function Poseidon in favor of traditional functions like SHA2 or BLAKE2. This decision ends eight years of research and investment, marking a major revision to the post-quantum security strategy. Poseidon, introduced in 2019, was highly efficient for zkRollups and zkVMs within SNARK circuits. However, its need for prolonged cryptanalysis and the pressing timeline for quantum resistance revealed limitations. Recent breakthroughs in SNARK design, specifically using binary fields, now enable traditional, battle-tested hash functions to perform as efficiently as Poseidon within SNARKs. Benchmarks show modern laptops can now verify over a million traditional hash calls per second. This change is partly driven by accelerated concerns over quantum computing threats. Reports warn that "Cryptographically Relevant Quantum Computers" could break current blockchain signatures like ECDSA by the early 2030s, risking trillions in assets. Ethereum's response focuses on hash-based post-quantum signature schemes, deemed more quantum-resistant than some lattice-based alternatives under pressure from AI cryptanalysis. Ethereum's updated post-quantum roadmap targets a production-ready "leanVM" for signature aggregation by 2027, with full deployment across consensus, execution, and data layers by 2028. The shift to mature hash functions like SHA2 reduces reliance on newer algorithms and aligns with the goal of using widely analyzed cryptographic primitives. Other major blockchains are also preparing. Solana's core teams have independently chosen the NIST-standardized Falcon signature scheme for its compact size. Starknet plans a phased migration, starting with replacing its Pedersen hash with BLAKE2. Ethereum's move signifies a strategic pivot towards proven security foundations for the quantum era.

marsbitHace 7 hora(s)

An Eight-Year Investment Takes a Sharp Turn: Why Did Ethereum Suddenly Abandon Poseidon?

marsbitHace 7 hora(s)

To Counter Quantum Threat, Ethereum Abandons Poseidon and Switches to Traditional Hashes

On August 13th, Ethereum researcher Justin Drake announced a strategic pivot in the face of the quantum computing threat: the Ethereum Foundation will abandon the SNARK-friendly hash function Poseidon at the L1 level in favor of traditional hash functions like SHA2 or BLAKE2. This decision, informed by eight years of research, represents a major shift in Ethereum's post-quantum cryptography roadmap. Poseidon, introduced in 2019, has been favored for zkRollups and zkVMs due to its efficiency within SNARK circuits. However, its shorter cryptographic history and analysis timeline became liabilities when post-quantum security became a critical requirement. The change is enabled by breakthroughs in SNARK design, particularly the adoption of "binary field" arithmetic. This allows traditional hash functions (which rely heavily on bitwise operations) to be verified efficiently in SNARKs, with recent benchmarks achieving millions of hashes per second on a laptop. Another key driver is the accelerating timeline of the quantum threat. Reports warn that "Cryptographically Relevant Quantum Computers" (CRQCs) could break current public-key cryptography (like ECDSA) as early as the 2030s, risking trillions in on-chain assets. The enhanced cryptanalysis capabilities of AI have also weakened some post-quantum candidates, pushing Ethereum towards hash-based schemes, deemed more quantum-resistant. Ethereum's post-quantum deployment plan aims for a production-ready leanVM by 2027, followed by full deployment across the consensus, execution, and data availability layers by 2028. This leanVM will aggregate numerous large post-quantum signatures into a single compact proof per block. Other major blockchains are also preparing. Solana's core developers have independently chosen the NIST-standardized Falcon signature scheme for their post-quantum roadmap. Starknet has outlined a multi-phase plan, starting with replacing its Pedersen hash with BLAKE2. By moving from the specialized Poseidon to the battle-tested SHA2/BLAKE2, Ethereum is opting for mature, widely analyzed cryptographic primitives, prioritizing long-term security assurance in the quantum era.

marsbitHace 2 días 06:38

To Counter Quantum Threat, Ethereum Abandons Poseidon and Switches to Traditional Hashes

marsbitHace 2 días 06:38

Vitalik Buterin Puts Privacy And Quantum Safety Higher On Ethereum’s Roadmap

Ethereum co-founder Vitalik Buterin has compared an older Ethereum roadmap with a newer "L1 Strawmap," signaling a shift in research priorities. The newer plan places greater emphasis on native privacy features and quantum safety, while also indicating a technical move away from Verkle trees toward Poseidon binary trees. Buterin stressed this is a research and planning tool, not a binding governance decision or hard fork announcement. The increased focus on privacy addresses the inherent transparency of public blockchains, which can expose user financial data. The higher priority for quantum safety reflects long-term planning for future cryptographic threats. The roadmap evolution highlights Ethereum's maturing priorities towards building durable, long-term infrastructure, focusing on core challenges like privacy, security, and scalable state management.

bitcoinist08/12 12:15

Vitalik Buterin Puts Privacy And Quantum Safety Higher On Ethereum’s Roadmap

bitcoinist08/12 12:15

Sui Co-founder Develops Quantum-Resistant Hardware Wallets Priced at $10

Kostas "Kryptos" Chalkias, co-founder and chief cryptographer at Mysten Labs behind the Sui blockchain, announced he is working on developing affordable, quantum-resistant hardware wallets for around $10. He revealed that over the past year, he rented a specialized facility to mass-produce these quantum-safe wallets. The goal is a keycard costing less than $10 and achieving quantum signature generation via NFC in 1-2 seconds, with Chalkias even considering sponsoring cards for users who cannot afford them. He directly referenced the recent Coldcard hardware wallet vulnerability as motivation for his project, emphasizing that such a failure would never happen with his solution. The Coldcard incident, involving a firmware flaw that compromised private key generation, led to estimated losses of around 2,055 BTC (~$130 million). While not a quantum attack, the Coldcard case highlighted the fundamental risk of cryptographic failures in hardware wallets, which Chalkias aims to preempt. His wallet project builds on Sui's broader quantum security roadmap. The Sui protocol plans to integrate two NIST-approved post-quantum signature schemes, one for everyday accounts and another for high-value Move-based vaults. Existing Sui accounts will be able to upgrade to a quantum-safe key derived from their current recovery phrase without requiring a full wallet migration, a flexibility Chalkias cites as a structural advantage over chains needing hard forks for similar upgrades.

cryptonews.ru08/12 12:09

Sui Co-founder Develops Quantum-Resistant Hardware Wallets Priced at $10

cryptonews.ru08/12 12:09

The First Quantum Attack on Cryptocurrencies Will Resemble an Unexplained Hack — Quantus Founder

The first quantum attack on cryptocurrencies is likely not to be a high-profile theft of Satoshi Nakamoto's idle bitcoins. According to Christopher Smith, CEO of Quantus Network, it will resemble a wave of seemingly unrelated wallet hacks with no traces of intrusion, as a sufficiently powerful quantum computer could derive private keys from on-chain public keys. Detecting this "Q-day" will be difficult, leaving only the "absence of a hack" as forensic evidence. While fears often center on Satoshi's fortune, Smith suggests first targets could be higher-value keys, like those controlling Tether's minting function, allowing attackers to create and sell tokens undetected. Alternatively, attackers might target exchange hot wallets to avoid immediate alarm. Experts disagree on the timeline: Smith puts 50/50 odds by 2028, while others point to the early 2030s. Advancements in quantum algorithms and AI-assisted research have accelerated concerns, with Google moving its post-quantum migration deadline to 2029. Fortunately, many blockchains are already adopting post-quantum cryptographic signatures.

cryptonews.ru08/10 11:00

The First Quantum Attack on Cryptocurrencies Will Resemble an Unexplained Hack — Quantus Founder

cryptonews.ru08/10 11:00

Crypto’s first quantum attack will look like an unexplained breach: Quantus founder

The first sign that quantum computing has broken modern cryptography may not be a high-profile theft, but a wave of unexplained crypto wallet breaches where attackers directly derive private keys from exposed public keys, leaving no forensic trace. Quantus Network founder Christopher Smith warns that "Q-day"—when quantum computers can break standard cryptography—will be difficult to detect, as advances in AI-assisted quantum algorithms are reducing the resources needed to attack blockchains' elliptic-curve cryptography. While much fear centers on Satoshi Nakamoto's dormant Bitcoin, Smith suggests the first targets could be military systems or even more valuable crypto targets like Tether's minting key, enabling an attacker to mint tokens out of thin air. Alternatively, attackers may quietly target exchange hot wallets or disguise quantum thefts as ordinary compromises. Timelines for Q-day remain uncertain. Recent developments, including Google accelerating its post-quantum migration to 2029, indicate the threat may arrive sooner than previously forecasted, especially with AI accelerating progress. Estimates range from a 50-50 chance by 2028 to a near certainty in the early 2030s. Despite the uncertainty, experts urge proactive migration to post-quantum cryptographic signatures to avert catastrophic damage.

cointelegraph08/10 03:46

Crypto’s first quantum attack will look like an unexplained breach: Quantus founder

cointelegraph08/10 03:46

XRP to Get a New Update: Here's What You Need to Know

The XRP Ledger (XRPL) is introducing a "Confidential Transfers" feature as part of the XRPL 3.3.0 software release. This new functionality is designed to provide greater privacy for institutional users in the tokenized assets market, currently valued at over $530 million. It aims to hide token balances and transfer amounts on the blockchain while still revealing account addresses and token types, using cryptographic methods like zero-knowledge proofs to validate transactions without exposing sensitive financial data. Primarily intended for multi-purpose tokens (MPTs), its expected use cases include funds, bonds, and other tokenized financial assets. The XRPL currently holds approximately $1.38 billion in real-world assets, including Ripple's USD-backed stablecoin RLUSD. The 3.3.0 release also includes other enterprise-focused upgrades such as batch processing, sponsor support, delegated permissions, and dynamic multi-party transaction processing. However, these updates are not yet active on the mainnet; activation requires continuous support from at least 80% of trusted XRPL validators for two weeks.

cryptonews.ru08/08 15:30

XRP to Get a New Update: Here's What You Need to Know

cryptonews.ru08/08 15:30

Cryptopolitan Report: Nearly Half of Our Readers Believe Quantum Technology Could Surpass Bitcoin by 2035

Nearly half of readers surveyed believe quantum computing could break Bitcoin by 2035. The threat lies specifically in its signature scheme (ECDSA/Schnorr), vulnerable to Shor's algorithm, which could derive private keys from public ones. Estimates suggest this could require 10,000+ qubits, a target now seen as plausible this century. Approximately 6.5-6.9 million BTC (25-33% of supply) are exposed because their public keys are already on-chain. Modern unused addresses remain safe until a transaction is broadcast. Bitcoin's response includes proposals like BIP-360 (Pay-to-Merkle-Root) to hide public keys and a multi-year transition plan. Notably, post-quantum signatures are deferred. A key development occurred when an AI model (Claude Mythos) broke the post-quantum signature scheme HAWK in days—a flaw two years of human review missed—without using a quantum computer. This highlights a new risk: AI cryptanalysis may outpace traditional verification, potentially disrupting upgrade timelines faster than quantum hardware advances.

cryptonews.ru08/08 13:53

Cryptopolitan Report: Nearly Half of Our Readers Believe Quantum Technology Could Surpass Bitcoin by 2035

cryptonews.ru08/08 13:53

What is a 'Secure Element'? How it Protects Hardware Wallets

A "secure element" is a specialized, tamper-resistant hardware chip designed to protect sensitive information. In hardware wallets, it acts as a vault for private keys, keeping them isolated from the main processor and the internet. Its core function is to sign cryptocurrency transactions internally; the private key never leaves the chip's protected environment—only the final digital signature is output. This prevents malware on a connected computer from stealing the key. Secure elements also defend against physical attacks, using hardware-level countermeasures to detect and resist tampering, voltage manipulation, and side-channel attacks. They contain dedicated hardware random number generators (RNGs) to ensure strong, unpredictable private keys are generated during wallet setup. Importantly, many secure elements undergo rigorous independent security evaluations (like Common Criteria certification) to verify their resistance to sophisticated attacks. However, a secure element is not an absolute shield. It cannot protect against user errors like approving fraudulent transactions or mishandling seed phrases. Its primary role is to raise the cost and complexity of attacks to impractical levels for most threats. Therefore, it is one critical layer within a broader security strategy that includes secure backup practices and transaction verification. Today, secure elements are a standard and vital component in hardware wallets, forming a crucial barrier for securing digital assets.

cryptonews.ru08/07 13:41

What is a 'Secure Element'? How it Protects Hardware Wallets

cryptonews.ru08/07 13:41

Sui Implements Quantum-Resistant Signatures

The L1 blockchain Sui announced the integration of two post-quantum digital signature schemes as part of its long-term plan to enhance network security. The update aims to protect user accounts and smart contracts from potential threats posed by the advancement of quantum computing. The network will implement the ML-DSA-65 algorithm for regular user accounts and the SLH-DSA-SHA2-128s algorithm for smart contract-managed storage. Both algorithms are based on post-quantum cryptography standards approved by the U.S. National Institute of Standards and Technology (NIST). According to the Sui team, using two distinct signature schemes mitigates risk, as each relies on a different mathematical approach. The core implementation is already complete and tested. Quantum-resistant storage is scheduled for deployment on the mainnet by the end of this year, while support for ML-DSA-65 accounts is targeted for the testnet by the end of 2026. The full launch of post-quantum account authentication on the mainnet is planned for the first quarter of 2027. The update will be accompanied by necessary upgrades to wallets, SDKs, and CLI tools, with independent security audits ongoing.

cryptonews.ru08/07 12:52

Sui Implements Quantum-Resistant Signatures

cryptonews.ru08/07 12:52

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