Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6337909 | Generation of session keys for El Gamal-like protocols from low hamming weight integers | Scott A. Vanstone, Robert John Lambert, Ronald C. Mullin | 2002-01-08 |
| 6336188 | Authenticated key agreement protocol | Simon Blake-Wilson, Alfred John Menezes | 2002-01-01 |
| 6301362 | Method and apparatus for cryptographically transforming an input block into an output block | Stephen M. Matyas, Don Coppersmith | 2001-10-09 |
| 6279110 | Masked digital signatures | Scott A. Vanstone, Minghua Qu | 2001-08-21 |
| 6195433 | Private key validity and validation | Scott A. Vanstone | 2001-02-27 |
| 6078667 | Generating unique and unpredictable values | — | 2000-06-20 |
| 6052469 | Interoperable cryptographic key recovery system with verification by comparison | Paul A. Karger, Charles W. Kaufman, Stephen M. Matyas, David R. Safford, Marcel Mordechay Yung +1 more | 2000-04-18 |
| 5987124 | Method and apparatus for encrypting long blocks using a short-block encryption procedure | Stephen M. Matyas | 1999-11-16 |
| 5953420 | Method and apparatus for establishing an authenticated shared secret value between a pair of users | Stephen M. Matyas | 1999-09-14 |
| 5937066 | Two-phase cryptographic key recovery system | Rosario Gennaro, Paul A. Karger, Stephen M. Matyas, Mohammad Peyravian, David R. Safford +2 more | 1999-08-10 |
| 5870470 | Method and apparatus for encrypting long blocks using a short-block encryption procedure | Stephen M. Matyas | 1999-02-09 |
| 5815573 | Cryptographic key recovery system | Paul A. Karger, Charles W. Kaufman, Stephen M. Matyas, Marcel Mordechay Yung, Nevenko Zunic | 1998-09-29 |
| 5796830 | Interoperable cryptographic key recovery system | Paul A. Karger, Charles W. Kaufman, Stephen M. Matyas, David R. Safford, Marcel Mordechay Yung +1 more | 1998-08-18 |
| 5768390 | Cryptographic system with masking | Don Coppersmith, Stephen M. Matyas | 1998-06-16 |
| 5661807 | Authentication system using one-time passwords | Richard Henry Guski, Raymond Craig Larson, Stephen M. Matyas, Don Coppersmith | 1997-08-26 |
| 5623402 | Multi-channel inverse control using adaptive finite impulse response filters | — | 1997-04-22 |
| 5592553 | Authentication system using one-time passwords | Richard Henry Guski, Raymond Craig Larson, Stephen M. Matyas, Don Coppersmith | 1997-01-07 |
| 5432849 | Secure cryptographic operations using control vectors generated inside a cryptographic facility | An V. Le, Stephen M. Matyas, Rostislaw Prymak, John D. Wilkins | 1995-07-11 |
| 5414833 | Network security system and method using a parallel finite state machine adaptive active monitor and responder | Paul C. Hershey, An V. Le, Stephen M. Matyas, John G. Waclawsky, John D. Wilkins | 1995-05-09 |
| 5323464 | Commercial data masking | Robert C. Elander, Christopher J. Holloway, Michael J. Kelly, An V. Le, Paul G. Lubold +2 more | 1994-06-21 |
| 5319705 | Method and system for multimedia access control enablement | Bernard J. Halter, Alphonse M. Bracco, An V. Le, Stephen M. Matyas, Rostislaw Prymak +2 more | 1994-06-07 |
| 5301231 | User defined function facility | Dennis G. Abraham, Daniela Henningsmeyer, John M. Hudson, An V. Le, Stephen M. Matyas +1 more | 1994-04-05 |
| 5265164 | Cryptographic facility environment backup/restore and replication in a public key cryptosystem | Stephen M. Matyas, An V. Le, Rostislaw Prymak, William C. Martin, William S. Rohland +1 more | 1993-11-23 |
| 5214698 | Method and apparatus for validating entry of cryptographic keys | Ronald M. Smith, Sr., Phil C. Yeh, Randall J. Easter, An Van Le, Stephen M. Matyas +2 more | 1993-05-25 |
| 5201000 | Method for generating public and private key pairs without using a passphrase | Stephen M. Matyas, An V. Le, Rostislaw Prymak, John D. Wilkins | 1993-04-06 |