By: shera on Domenica 30 Ottobre 2016 00:32
Se iniziano a vendere il bitcoin in posta bisogna solo aspettare che la casalinga al supermercato dica che ne ha comprati un paio...
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The Shannon theory of secure communication, and it's been proven correct mathematically, states that the only way for a cryptogram (encrypted text) to be secure is if the key is of equal or longer size than the original text. So, how can a 256 bits key keeps the blockchain secure? Specially if that hashing and crypto algorithm was developed at the NSA.
This is specially true for the eliptical encryption models that bitcoin uses, which, by the way, were approved by the NSA just the day before bitcoin was officially released. This algorithms are used to secure the bitcoin, so that only the owner can spend the money. The problem comes from the fact that this algorithm needs a seeding by a pseudo-random number generator, which can and it's backdoored by the NSA. Knowing the random number used to seed the key, it's fairly easy to decrypt the whole electronic wallet.
Remember, encryption only works for some time. There is no practical and mathematically way to keep something secret forever. All encryption algorithms are based on the idea of keeping something secret for long enough to render it useless. What do you care about something that happened 5 years ago? Now, do you want to keep bitcoins for 20 or 30 years?
Blockchain doesn't use encrypted messaged, but encryption algorithms instead. What do you think hashing algorithms are? So, what happens if the hashing algorithm is compromised? The fact that it not publicly known right now doesn't mean it won't exist in a few years. In fact, it's a mathematical fact that the hashing algorithm will be broken at some point. I refer to the Shannon theories about information security.
The encryption algorithm used to encrypt your wallet is the ECC. Basically a random eliptical curve is created using a random number generator. This is not "if you want", this is just how it works in case you want to secure your bitcoins and that nobody uses them. The problem is that you can hack the way seeding is done in the PRNG, and you can reduce the number of potential eliptical curves, basically rendering the encryption useless. Just think about it, how does your computer generate a random number? Give it a thought, cause that's your backdoor for the encryption.
The fact that something is open source doesn't guarantee it's integrity. Do you remember the heartbleed bug? How about potencial exploits using the hardware? Maybe you haven't heard about things like row-hammering bit flipping, branch prediction side buffer exploit and many others. There is a reason why the russians build their own chips for government computers and the military.
Il 5 maggio 2023 ho chiesto all'AI il miglior titolo da comprare a Piazza Affari: Banca Profilo, oggi scende dello 0,46% a 0.2180 Euro
Lo sbarco sulla Luna, la più grande truffa della storia del mondo, dopo il Covid.