SMRTR Science & EngineeringSep 28, 2025John D. Cook

Post-quantum RSA with gargantuan keys

SMRTR summary

RSA encryption faces a future threat from quantum computers using Shor's algorithm, which could break current key sizes by factoring numbers much faster than classical methods. Cryptographer Daniel Bernstein calculated that RSA would need impractically massive terabyte-sized keys to remain secure against quantum attacks, illustrating why alternative post-quantum encryption methods are necessary.

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