Encryption/decryption method incorporated with local server software

• US 20060004883A1
• Filed: 10/26/2004
• Published: 01/05/2006
• Est. Priority Date: 05/18/2004
• Status: Abandoned Application

• Current Assignee: Cyberlink Corporation
• Original Assignee: Cyberlink Corporation
• Inventors: Chou, Hung-Te, Yu, Chi-Hsin
• Application Number:
  US10/973,624
• Publication Number:
  US 20060004883A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: G06F 21/6245 Protecting personal data, e.g. for financial or medical purposes
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/168 above the transport layer

Abstract

A document decryption/encryption method is incorporated with local server software for dynamically decrypting a document when the document is read. The method packages the document by encrypting the document with encryption software, attaches a local server software with the encrypted document so as to generate a corresponding package file having the local server program and the encrypted document together, and executes the package file by a local host. A local server program is provided by executing the local server software and loading the server program into the system memory of the local host, and the document is dynamically decrypted by the local server program when the document is read by a reading device associated with the local server program so as to open the document.

Claims

1. A document decryption/encryption method incorporated with local server software for dynamically decrypting a document when the document is read, comprising the steps of:

creating a packaged document by encrypting the document with encryption software;

attaching local server software to the packaged document and then generating a corresponding package file having the attached local server software and the packaged document together;

opening the package file and executing the package file by a local host;

providing a local server program by executing the local server software and loading the server program into a storage media of the local host; and

dynamically decrypting the document by the local server program when the document is read by a reading means associated with the local server program so as to open the document.

2. The method as claimed in claim 1, wherein the reading means is a web browser.

3. The method as claimed in claim 1, wherein the document is a web-formatted document.

4. The method as claimed in claim 1, wherein the package file is an executable file.

5. The method as claimed in claim 1, wherein when the document is read, a linking relationship between the reading means and the local server program is established.

6. The method as claimed in claim 1, wherein when providing the local server program, the local server software disables a cache mechanism of the local host.

7. The method as claimed in claim 1, wherein when encrypting the document with the encryption software, the encryption software provides an encryption algorithm corresponding to a decryption algorithm of the local server software.

8. The method as claimed in claim 1, wherein when encrypting the document with the encryption software, the encryption of the document is executed with respect to a varying value derived from a password.

9. A document decryption/encryption method incorporated with local server software for dynamically decrypting a web-formatted document when the document is read, comprising the steps of:

creating a packaged web-formatted document by encrypting the web-formatted document with encryption software;

attaching local server software to the packaged web-formatted document so as to generate a corresponding package file having the attached local server software and the packaged web-formatted document together;

opening the package file and executing the package file by a local host;

providing a local server program by executing the local server software and loading the server program into a storage media of the local host; and

dynamically decrypting the web-formatted document by the local server program when the web-formatted document is browsed by a web browser associated with the local server program so as to open the web-formatted document.

10. The method as claimed in claim 9, wherein when browsing the web-formatted document, a linking relationship between the web browser and the local server program is established.

11. The method as claimed in claim 9, wherein when encrypting the web-formatted document with the encryption software, the encryption software provides an encryption algorithm corresponding to a decryption algorithm of the local server software.

12. The method as claimed in claim 9, wherein when providing the local server program, the local server software disables a cache mechanism of the local host.

13. The method as claimed in claim 9, wherein when encrypting the web-formatted document with the encryption software, the encryption of the web-formatted document is executed with respect to a varying value derived from a password.

14. A document decryption/encryption method incorporated with local server software for dynamically decrypting a document when the document is read, comprising the steps of:

creating a packaged document by encrypting the document with encryption software;

storing the package file in a storage media;

executing local server software so as to generate a local server program in a local host;

applying a reading means wherein a linking relationship between the reading means and the local server program is established; and

dynamically decrypting the package file by the local server program when the document is read by the reading means associated with the local server program so as to open the package file.

15. The method as claimed in claim 14, wherein the reading means is a web browser.

16. The method as claimed in claim 14, wherein the document is a web-formatted document.

17. The method as claimed in claim 14, wherein when the document is read, a linking relationship between the reading means and the local server program is established.

18. The method as claimed in claim 14, wherein when generating the local server software, the local server software disables a cache mechanism of the local host.

19. The method as claimed in claim 14, wherein when encrypting the document with the encryption software, the encryption software provides an encryption algorithm corresponding to a decryption algorithm of the local server software.

20. The method as claimed in claim 14, wherein when encrypting the document with the encryption software, the encryption of the document is executed with respect to a varying value derived from a password.