# 128-bit Symmetric Keys Remain Secure Against Quantum Computers Quantum computers pose limited threat to encryption systems. - **Source:** [Ethereum](https://brifing.si/source/7f75df88-bffd-4d0a-8106-2c49e80ecfcd) - **Published:** 2026-07-19 - **Topic:** [Software & Engineering](https://brifing.si/c/engineering) - **Original article:** - **On Brifing:** https://brifing.si/s/b7909165-2c99-4238-a90c-5e9d0d6ffa4b ## Quantum Computers and Encryption Quantum computers can quickly solve complex problems that traditional computers cannot. This raises concerns about the future of encryption systems. However, 128-bit symmetric keys are said to remain secure against this threat. ## Resilience of 128-bit Symmetric Keys 128-bit symmetric keys offer a level of encryption that even quantum computers cannot easily break. These keys provide a high level of security against hackers. ## Limitations of Quantum Computers While quantum computers excel at solving certain types of problems, they cannot easily break all encryption systems. Symmetric keys, in particular, can surpass the capabilities of these computers. ## The Future of Encryption Technology As technology advances, encryption methods also evolve. With the emergence of quantum computers, research into stronger encryption techniques has accelerated. ## Views from Security Experts Security experts believe the impact of quantum computers on encryption systems is overstated. Current encryption methods are considered sufficiently strong against this technology. ## Conclusion and Recommendations 128-bit symmetric keys continue to be a secure option against the threat of quantum computers. The ongoing evolution of encryption technology will provide even stronger protection against such threats. ## Sources covering this story - https://www.reddit.com/r/ethereum/comments/1v0klnd/quantum_computers_are_not_a_threat_to_128bit/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._