Robert A Mills

US Patent:

56319614, May 20, 1997

Filed:

Sep 15, 1995

Appl. No.:

8/528966

Inventors:

Robert A. Mills - Gambrills MD
Mark R. Unkenholz - Eldersburg MD
Mark W. Wilson - Columbia MD
John E. Burroughs - Annapolis MD

Assignee:

The United States of America as represented by the Director of the
National Security Agency - Washington DC

International Classification:

H04K 100

US Classification:

380 21

Abstract:

A device for and method of transmitting an encrypted message and an access field from a sender to a receiver, where a third party may intercept and process the transmission. The sender and receiver agree on a session key. The sender raises an element of a Galois Field to the session key; forms a temporary device unique key; encrypts the session key with the temporary device unique key; forms a temporary family key; encrypts an identifier of the sender and the encrypted session key using the temporary family key; encrypts a plaintext message using the session key; forms the access field by concatenating the element of a Galois Field raised to the session key to the encrypted version of the sender's identifier and the sender's encrypted session key; concatenates the ciphertext to the access field; and transmits the access field and the ciphertext to the receiver. The receiver may recover the plaintext from the sender's transmission. The third party may partially process the transmission to find the identity of the sender.

Address:

1733 Oakland Rd, Reisterstown, MD 21136

VIN:

1UJBJ02R371JU0159

Make:

N/A

Model:

N/A

Year:

2007