Cryptocurrency Q&A How long would it take a quantum computer to crack AES-256?

How long would it take a quantum computer to crack AES-256?

DigitalBaron DigitalBaron Mon Sep 23 2024 | 6 answers 1122
Could you elaborate on the potential timeline for a quantum computer to successfully decrypt AES-256 encryption? Given the advancements in quantum computing technology and the complexities involved in breaking such a robust encryption standard, what are the current estimates for the duration it might take for such a feat to be achieved? Is there a possibility that the timeline could be shortened significantly with further advancements in the field? How long would it take a quantum computer to crack AES-256?

6 answers

Valentino Valentino Wed Sep 25 2024
The comparison between classical and quantum computers in terms of brute-forcing a 256-bit key highlights a significant difference in their capabilities. A classical computer would require an astronomical number of operations, specifically 2^256, to accomplish this task.

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Silvia Silvia Wed Sep 25 2024
In contrast, a quantum computer, with its unique ability to harness the principles of quantum mechanics, would theoretically require a significantly reduced number of operations, approximately 2^128.

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IncheonBeautyBloomingRadianceGlow IncheonBeautyBloomingRadianceGlow Tue Sep 24 2024
Despite this seeming advantage, the number 2^128 remains immense, emphasizing the complexity and strength of 256-bit encryption.

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Federico Federico Tue Sep 24 2024
It's important to note that achieving such a quantum computer, capable of millions of qubits, is currently beyond our technological reach. The development of such advanced systems remains an area of active research and experimentation.

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BlockchainBaron BlockchainBaron Tue Sep 24 2024
Even if such a quantum computer were to become available, the time it would take to crack 256-bit encryption would still be measured in years or decades, further underscoring the resilience of this encryption standard.

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