| 摘要 |
<p>A vulnerable aspect of symmetric encryption systems is establishment of the key. During the key establishment, the key is often transmitted to authorized users; however, an unauthorized user may determine the key by eavesdropping. Directional electromagnetic signals, such as a laser, may be useful in preventing eavesdropping. For example, directional electromagnetic signals, such as laser signals, may be used to create a secured private data link associated with a secret key between a first wireless transmit/receive unit (WTRU) and a second WTRU.</p> |
| 申请人 |
INTERDIGITAL PATENT HOLDINGS, INC.;STERNBERG, GREGORY, S.;CASTOR, DOUGLAS, R.;SFAR, SANA;KAUR, SAMIAN, J.;PIETRASKI, PHILIP, J.;YOGENDRA, SHAH, C. |
发明人 |
STERNBERG, GREGORY, S.;CASTOR, DOUGLAS, R.;SFAR, SANA;KAUR, SAMIAN, J.;PIETRASKI, PHILIP, J.;YOGENDRA, SHAH, C. |
