In my opinion Bitcoin will fail. Can you trust a currency that is reliant on vulnerable technology?? With the creation of a number of new competing cryptocurrencies being developed and eventually diluting the market. If a cyber attack occurred would your Bitcoin be safe. Would you intrust thousands of dollars to the system? How long before Government infiltrate this technology and causes it to fail? Why would Government do that? Because central banks will not tolerate a currency that they do not have complete control over, thats why. If they cause a failure in the system, then people will lose confidence in them, unless of course the federal government comes to the rescue and offers to insure the currency FDICA baby. Look what they did to Precious metals. The feds found a way to manipulate it and fix it. The banks simply print and sell enough paper contracts to dilute the market. Some say that there are up to 200 hundred paper contracts per ounce of gold. The silver and gold markets are easily moved by the simple push of a computer key. They must regulate it in order to keep the value of the dollar intact. The same is true with cryto. If they let the market run, paper currencies would diminish in value. Is it possible that the cryptocurrency was ordained by the central banks as a trail to see if people would buy into this type of monetary system? But for now enjoy the wealth it has created, just don't think they will let the party continue.
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Bitcoin is very simple and all cryptos are based on the same blockchain technology. Even if there is a backdoor with SHA256, the developers can switch out the encryption algorithm easily. Let's pretend the government shuts down the internet, there are many copies of the entire blockchain across the world so everything would be backed up. Bitcoin has added value of being the first Crypto-currency so it will forever be sought after.
These are words of Konstantinos Karagiannis
CTO, Security Consulting, Americas, BT.
But is it safe?
My RSA 2017 talk, “Hacking Blockchain”, includes a fair amount of time explaining historic and current attacks faced by all implementations of the technology. A lot of these attacks are old school, focusing on supporting technology and not on the blockchain itself.
Consider attacks against credentials used at an online cryptocurrency exchange. Such exchanges act as hot wallets, or storage of funds available for transacting online at any time. Traditional authentication hacking of these sites can lead to illegal transactions. Some attacks are even more creative, such as the ability to force a cold or offline wallet to become hot and therefore a target for fraudulent transactions.
The major issue I cover, though, is the inherent flaw on page one of Satoshi’s paper. That elegant if pesky line about “computationally impractical to reverse” transactions. You see, the crypto behind cryptocurrency is actually public key. We are likely less than three years away from this being completely hackable by a quantum computer.
Facing reality.
Fantasy? Hardly. Labs around the world have already proven that quantum computers can run Shor’s Algorithm and almost instantly find the private key of a public key pair even 4,096 bits long. Because of how public key works in most blockchain implementations, including Bitcoin, this would mean any time a transaction occurs, a quantum computer has everything it needs to obtain a user’s private key. Spend a single cryptocoin, and any entity with a quantum computer can download that currency’s blockchain, see your transaction, and in a few moments spend the rest of your funds.
The threat seems even worse if you consider blockchains designed to prove ownership of land or other critical identity-related transactions. A private key attack here can lead to an irreversible type of identity theft, at least within that blockchain ecosystem.
The NSA has already warned against the use of non-quantum-safe encryption. Its’ time to realise we may be rushing towards putting everything on a digital house of cards rather than an unbreakable chain. Let’s fix blockchain’s inherent flaws now, before it’s too late.
If you want to see our Blockchain demo in person, why not visit Innovation 2017, our technology and innovation exhibition taking place in June.
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Quantum Computers are Science Fiction and not reality. That is just my opinion.