Interestingly, the error in the security proof is exactly the flip-side of the vulnerability discussed in this post. As a result the upcoming hard fork will not be vulnerable to this exploit . While writing the exploit code and preparing this blog post I learned that an anonymous person called RandomRun reported a flaw in the security proof of ASNL, which convinced the Monero devs to publish a bugfix release that switches to Borromean signatures (good call!).
Grosse consommatrice d’énergie, la cryptomonnaie avait déjà été épinglée à coups de comparaisons peu flatteuses avec des pays et des industries. Pourquoi réduire son chauffage, bitcoin
alors qu’on pourrait simplement se passer de la cryptomonnaie? Dans un contexte de pénurie d’énergie, certains appellent déjà à l’interdiction de l’utilisation et du minage de bitcoin, le procédé par lequel la monnaie est créée. Alors que le mot d’ordre est aux économies d’énergie, les regards se tournent inévitablement vers le bitcoin.
Déjà critiqué pour sa consommation importante d’électricité, le bitcoin risque d’être encore davantage pointé du doigt dans une période d’économie d’énergie, même si le minage est pratiquement inexistant en Suisse et en Europe. L’industrie se défend.
The combination of all these features makes MuSig2 highly practical. We prove the security of MuSig2 under the one-more discrete logarithm (OMDL) assumption in the random oracle model, and the security of a more efficient variant in the combination of the random oracle and algebraic group models. Furthermore, our scheme is the first multi-signature scheme in the DL setting that supports preprocessing of all but one rounds, effectively enabling a non-interactive signing process, without forgoing security under concurrent sessions. In this work, we propose MuSig2, a novel and simple two-round multi-signature scheme variant of the MuSig scheme. Our scheme is the first multi-signature scheme that simultaneously i) is secure under concurrent signing sessions, ii) supports key aggregation, iii) outputs ordinary Schnorr signatures, iv) needs only two communication rounds, and v) has similar signer complexity as regular Schnorr signatures.
Standard derandomization techniques for discrete logarithm-based signatures such as RFC 6979, which make the signing procedure immune to catastrophic failures in the randomness generation, are not applicable to multi-signatures as an attacker could trick an honest user into producing two different partial signatures with the same randomness, which would reveal the user’s secret key. Abstract : MuSig is a multi-signature scheme for Schnorr signatures, which supports key aggregation and is secure in the plain public key model.
Two-and-a-half weeks ago, see here, and cryptocurrency before, I shared with you that per the Elliott Wave Principle (EWP), Bitcoin (BTC) had most likely completed a leading diagonal (LD) in August and had been correcting since then. I was looking for a "dead-cat-bounce," a wave-b, bitcoin targeting around $22465-23495 before the next leg is lower to $20000+/-1000 with an ideal target of $19386. Unfortunately, the bounce fell short at $21879, but as said back the.
Last week the Monero team disclosed a major bug in CryptoNote based cryptocurrencies (reddit thread) which could be used to create "create an infinite amount of coins". Monero itself was quietly fixed in February (release, pull request) and the since then every user syncing the blockchain from scratch validates that it was never exploited in Monero. However, If you have any questions pertaining to where and how to use BNB
, you can call us at our page. it was used in CryptoNote based shitcoin ByteCoin to create about 700 million coins out of thin air.
While an on-chain transaction - usually referred to as simply 'a transaction' - modifies the blockchain and depends on the blockchain to determine its validity an off-chain transaction relies on other methods to record and validate the transaction. Like on-chain transactions all parties must agree to accept the particular method by which the transaction occurs, the question then being, how can those parties be convinced that the movement of value has actually happened, will not be reversed, and can be exchanged in the future for something of value? An off-chain transaction is the movement of value outside of the block chain.
If the communication protocol between client and service is designed correctly fraud by the service can be proven to others. With appropriate software all participating clients of the service can be informed of any fraud immediately taking "advantage of the nature of information being easy to spread but hard to stifle" - a core concept underlying the security of Bitcoin itself. This fraud proof can be self-authenticating, and thus anyone who comes in possession of such a proof can broadcast it to their peers. For instance if the service cryptographically signs all communications an inconsistency between the claimed merkle-tip of the accounts held by the service and the merkle-path from a particular account to that tip can be proven by providing the signed tip, and the signed merkle-path.