For a layman, it may be difficult to fathom how a standards body could be playing catch-up to a threat that could be at least a decade away. But that’s the position NIST finds itself in with the risk that quantum computers pose to existing cryptographic algorithms.
Working, practical quantum computers are likely 10 years away, maybe as many as 20 years from reality. But the advances they promise would make existing asymmetric cryptography obsolete, and would put a serious dent in symmetric crypto.
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