| 5323464 |
Commercial data masking |
Christopher J. Holloway, Donald B. Johnson, Michael J. Kelly, An V. Le, Paul G. Lubold +2 more |
1994-06-21 |
| 4500750 |
Cryptographic application for interbank verification |
Richard E. Lennon, Stephen M. Matyas, Carl H. W. Meyer, Robert E. Shuck, Walter L. Tuchman |
1985-02-19 |
| 4386234 |
Cryptographic communication and file security using terminals |
William F. Ehrsam, Stephen M. Matyas, Carl H. W. Meyer, Robert L. Powers, Paul N. Prentice +2 more |
1983-05-31 |
| 4238854 |
Cryptographic file security for single domain networks |
William F. Ehrsam, Stephen M. Matyas, Carl H. W. Meyer, John L. Smith, Walter L. Tuchman |
1980-12-09 |
| 4238853 |
Cryptographic communication security for single domain networks |
William F. Ehrsam, Stephen M. Matyas, Carl H. W. Meyer, Robert L. Powers, Paul N. Prentice +2 more |
1980-12-09 |
| 4227253 |
Cryptographic communication security for multiple domain networks |
William F. Ehrsam, Lloyd L. Hollis, Richard E. Lennon, Stephen M. Matyas, Carl H. W. Meyer +2 more |
1980-10-07 |
| 4203166 |
Cryptographic file security for multiple domain networks |
William F. Ehrsam, Stephen M. Matyas, Carl H. W. Meyer, Richard J. Sahulka, Walter L. Tuchman |
1980-05-13 |
