发明名称 |
SYSTEM AND METHOD FOR FILE ENCRYPTION AND DECRYPTION |
摘要 |
There is disclosed a system and method for file encryption and decryption. In an embodiment, a method of encrypting a file on backup media involves encrypting clear data using a data encryption key applied to a data encryption algorithm and outputting encrypted data; storing the encrypted data on the backup media; encrypting the data encryption key using a reference cryptographic key applied to a key encryption algorithm and outputting an encrypted data encryption key; and storing the encrypted data encryption key and reconstitution data in a header of the backup media. The encrypted data may be subsequently decrypted by identifying the reference cryptographic key using the reference cryptographic key name; applying the reference cryptographic key to a key decryption algorithm to decrypt the encrypted data encryption key; and applying the decrypted data encryption key to a data decryption algorithm to decrypt the encrypted data.
|
申请公布号 |
CA2563144(A1) |
申请公布日期 |
2008.04.12 |
申请号 |
CA20062563144 |
申请日期 |
2006.10.12 |
申请人 |
IBM CANADA LIMITED - IBM CANADA LIMITEE |
发明人 |
ALLMOND, MARILYN F.;NACHTIGALL, ERNEST H. |
分类号 |
G06F21/62 |
主分类号 |
G06F21/62 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|