ALEXANDRIA, Va., July 16 -- United States Patent no. 12,362,948, issued on July 15, was assigned to Cryptography Research Inc. (San Jose, Calif.).

"Authentication using an ephemeral asymmetric keypair" was invented by Mark Evan Marson (Carlsbad, Calif.) and Scott C. Best (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A prover chip uses a key multiplier value generated by a proof-of-work function from a challenge value, a random number, and elliptic curve cryptography (ECC) techniques to generate a one-time (or ephemeral) use private key. Similarly, a verifier chip uses the key multiplier value generated by an equivalent proof-of-work function, a public key received from the prover, and ECC...