Cryptographer Matthew Green corrects the record: it was a one-byte ECDSA key, not RSA
matthew_d_green · x · 2026-10-21
Cryptographer Matthew Green corrects a secondhand account of a recent key incident: the key in question was ECDSA, not RSA. He notes that picking a one-byte EC secret key is hard and embarrassing, while a one-byte RSA secret exponent would be almost impressive — and admits the truth isn't much better than the rumor.
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