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US 4200770

How to Create a Secret Code Key Without Meeting First

This 1980 patent describes a way for two people to create a secret code key over a public channel, like the internet, without ever meeting or sharing the key directly.

Statusexpired

Granted1980

Expires1997

Claims15

Forward citations708

Prior art2

AssigneeLeland Stanford Junior University

InventorsMartin E. Hellman, Ralph C. Merkle +1

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