Quantum computers pose a real threat to asymmetric cryptography (RSA, ECDH), necessitating post-quantum transition work. However, symmetric cryptography (AES, SHA-2/3) remains secure even against quantum computers. The article refutes the misconception that Grover's algorithm requires doubling symmetric key sizes, showing that parallelization constraints make attacks infeasible.
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Quantum Computers Are Not a Threat to 128-Bit Symmetric Keys
Symmetric cryptography like AES remains quantum-safe due to parallelization constraints limiting Grover's algorithm; only asymmetric crypto (RSA, ECDH) requires post-quantum migration.
Monday, April 20, 2026 12:00 PM UTC2 MIN READSOURCE: Hacker NewsBY sys://pipeline
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