Cybersecurity researchers and analysts are rightly worried that a new type of computer, based on quantum physics rather than more standard electronics, could break most modern cryptography. ... The quantum computers that exist today are not capable of breaking any commonly used encryption methods.
While as Enas Tariq Khudair points out that current quantum computers cannot break commonly used encryption, the issue is what happens when quantum computers are much better. To deal with that future scenario, quantum resistant encryption has been worked on. Public key encryption thought to be more vulnerable than symmetric key encryption. See:
https://en.wikipedia.org/wiki/Post-quantum_cryptography
I know that some companies like Intel (since I work there) have been using post quantum encryption algorithms to sign code in products to try to protect them long into the future. The IETF has also done work in this area.
Jeff Sedayao I agree with your point of view. But using homomorphic encryption can be one path to follo, trying to status secure when quantu-based Computers have real power. Shan Ali Lashari , the future always balance things:)
This is a fact that a fully fault tolerant quantum computer can easily break the encryption and poses threat to modern cybersecurity. But until now, its still not possible because of limitations of quantum mechanics. According to the experts, a quantum computer would need to be as large as 70 million qubits to break that encryption. On the other hand post quantum protocols are being developed, that promises the safety of data in the era of quantum computers. If a quantum computer becomes capable to carry out the complex task regarding the breaking of encryption then post quantum cryptography would definitly be able to make again the encryption unbreakable.
Everything should be seen from amount of work to be done and how much can be done in a quantum computer. However, as we know, each we are close to make and algorithm obsolete a new emerges.
On Future of Cyber Security let me start with a point the word Cyber indicates that space where computers are connected beyond borders and Line of Controls. So if we need to secure data on our computers will be a great challenge to a country. So as per the current scenario there are to powerful weapons to destroy a country 1. Cyber War 2.Bio-War(Covid) which are typical to handle overnight but with great innovation and keen improvements both can be controlled, will have a great future with best control mechanisms. Finally if we can learn how to secure data then we can control almost a everything and Cyber Security is on top of all and with great technologies to be monitored for privacy and security. For bio-war to stop or control is latest innovation in Medical streams
Researchers and experts in the field of cybersecurity are legitimately concerned that a new form of computer based on quantum mechanics rather than more traditional electronics might defeat most existing cryptography. Today's quantum computers are incapable of decrypting any regularly used encryption schemes.
While this power is great in a number of fields, it also makes certain types of computer security techniques trivial to solve. Here are a few of the ways quantum computing will affect cybersecurity and other fields. Cryptography powers many of today’s security systems.