February 26, 2018 16:00 by Schreeuw Davis
Bitcoin’s nature spil a very first of its zuigeling digital currency retains its value based on a few ordinary variables. The concept that it can be transferred with ease and without a high cost, the fact that it is internationally available and makes transfers inbetween deals across the world ordinary and the reliability of the chain’s security which is unlikely to hack with today’s technology. This final facet of bitcoin needs to be examined further spil the countdown to the very first quantum computers ticks quicker and swifter, and the Elliptic Curve Digital Signature Algorithm (ECDSA) is ultimately crackable.
Quantum Computing will Pauze ECDSA
If an ECDSA exploit is found, bitcoin becomes worthless spil soon spil the public hears about it. There’s no real way around that, spil once that security is gone there is no way to tell if a transaction came from the original proprietor of those coins with any certainty.
Due to this, interestingly enough, the most effective attack on the currency actually comes from someone not actually using the exploit to steal bitcoin . Figuring out the exploited, shorting bitcoin and then simply making the exploit public would be very effective spil legal harm to the hacker would be null, his profits would be high and bitcoin spil wij know it would crash to obscurity.
With current tech, this is an unachievable purpose. The algorithms for exploiting ECDSA are much too complicated with today’s computers, but with quantum computers inching closer and closer to reality this may not be the case much longer.
Besides creating an entirely fresh currency when the time comes, via a hard fork or some other means which come with their disastrous consequences on the economy, a few solutions have bot set out spil alternatives to using ECDSA.
Quantum Proofing Bitcoin
When considering a fresh security key algorithm, there are a few factors at play to maintain the decentralized nature of bitcoin. Storage, bandwidth and computation energy required effect the length of the key, the signature length and verification time. Spil thesis are very significant to make sure the currency is usable and transferable, choosing a fresh algorithm te a post-quantum world is difficult.
The actual solution here is up for debate, however there are some theoretical ways to have a safe post-quantum bitcoin. The optimal seems to lie under the assumption that the ECDSA can and will be cracked and to have a safeguard against it outside the bitcoin client. Notably upgrades to wallet security through multi-level keys based on a very resolute signature scheme, such spil XMSS, seems to be the best bet te guarding the future of bitcoin.
If this type of security layering is adopted, then it should work even if the ECDSA is already cracked. Higher security means no hard forks are required, and the only risk is for users using unsecured wallets. A community-wide switch and adoptions of thesis higher-level security features will be needed to be able to maintain bitcoin ter its current state, spil enlargening signature security within the Bitcoin chain itself will have the potentially disastrous consequences of enlargened transaction time and potential hard forks.