For some time now, there has been renewed discussion about the problems that quantum computing could create for Bitcoin.
To tell the truth, false news has also spread regarding unlikely imminent risks, but it should not be forgotten that the risk is indeed there.
The risks of quantum computing for Bitcoin
The main problem seems to be related to the signatures of the transactions.
In reality, it is not a specific problem of Bitcoin, but of any other computer protocol that uses similar digital signatures.
The Bitcoin protocol uses the Elliptic Curve Digital Signature Algorithm (ECDSA), which uses the Secp256k1 and SHA256 functions.
The hypothesis circulating is that sooner or later quantum computing could be able to “crack” in particular SHA256, thanks to its enormous computing power.
It must be remembered that quantum computers are not simply more powerful than current ones, but they are immensely more so. By exploiting the peculiarities of quantum physics, they
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