What is the impact of quantum computing on cryptography?

What is the impact of quantum computing on cryptography?

Quantum computing poses a significant threat to traditional cryptographic systems, particularly those based on factoring large numbers and discrete logarithms.

Can you explain how quantum computers can break encryption?

Sure! Quantum computers can use algorithms like Shor's algorithm to efficiently factor large numbers, which undermines RSA encryption.

What can be done to protect against quantum attacks?

To protect against quantum attacks, researchers are developing post-quantum cryptography, which relies on mathematical problems that are hard for quantum computers to solve.

Are there any current quantum-resistant algorithms?

Yes, several candidates for quantum-resistant algorithms are being standardized, including lattice-based, hash-based, and code-based cryptography.

When will quantum computers be powerful enough to break current encryption?

It's uncertain, but estimates suggest that we may see practical quantum computers capable of breaking current encryption within the next few decades.