| 摘要 |
<p>Provided is an information leak prevention device which prevents information leaks of files without access control rules. The information leak prevention device has a data processing device, a file memory device, and a key memory device. The data processing device comprises an execution detection means which detects each user who started an application based on an access identifier which is the group of an identifier for identifying the application when an application is executed and an identifier for identifying the user who started the application, key verification means which verifies whether or not the group of a unique encryption key and decryption key exists for the access identifier in the key memory device, key generation means which creates a unique encryption key and decryption key in the access identifier and saves the access identifier and the group of the encryption key and the decryption key as the key element in the key memory device, access detection means which detects the access to a file by the application for each user, and encryption and decryption means which acquires the group of the unique encryption key and decryption key in the access identifier from the key memory device and uses this group of an encryption key and a decryption key to encrypt and decrypt data.</p> |
