| 摘要 |
<p>A method and system for controlling the accessibility of information. An escrow system automatically makes information inaccessible regardless of how many electronic copies of the information have been made and regardless of the location of such copies. The escrow system provides an escrow agent that is responsible for storing decryption keys and providing those decryption keys when information is to be decrypted. In addition, the escrow agent automatically destroys decryption keys based on certain expiration conditions, such as passage of time.</p> |
