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2 votes
1 answer
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Does triple ChaCha20 have 256-bit post-quantum security?

Experts suggested 3DES when AES wasn't developed yet, since meet-in-the-middle attack, they suggested triple DES. Grover's algorithm, a quantum algorithm, weakens symmetric encryptions, how about ...
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0 votes
1 answer
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Do multiple keys mitigate Grover algorithm?

Grover, a quantum algorithm, weakens AES and ChaCha20. Is it possible to use multiple symmetric keys to encrypt a message multiple times to achieve 256-bit security for quantum computers?
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