Systems and methods for manipulating and managing computer archive files

• US 7,890,465 B2
• Filed: 10/26/2006
• Issued: 02/15/2011
• Est. Priority Date: 03/09/2000
• Status: Expired due to Term

• Current Assignee: PKWARE, Inc. (PKW Holdings, Inc.)
• Original Assignee: PKWARE, Inc. (PKW Holdings, Inc.)
• Inventors: Basin, Yuri, Beirne, Michael J., Peterson, Karen L., Peterson, James C.
• Primary Examiner(s): HARPER, ELIYAH STONE
• Application Number:
  US11/586,866
• Publication Number:
  US 20070043777A1
• Time in Patent Office: 1,573 Days
• Field of Search: 707/104.1, 707/100, 707/10, 707/999.01, 707/640, 707/736, 713/190, 713/156
• US Class Current: 707/640
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 16/1744 using compression, e.g. sparse files
• CPC Class Codes: H03M 7/30 Compression speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: Y10S 707/99931 Database or file accessing
• CPC Class Codes: Y10S 707/99942 Manipulating data structure, e.g. compression, compaction, compilation
• CPC Class Codes: Y10S 707/99943 Generating database or data structure, e.g. via user interface
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A computer program for managing and manipulating archive zip files of a computer. The program includes a system and method for opening, creating, and modifying, and extracting zip archive files. The program is fully integrated into Microsoft Windows Explorer and is accessed via Explorer menus, toolbars, and/or drag and drop operations. An important feature of the program is the archive manager which may be used to open a zip file, create a new zip file, extract zip files, modify zip files, etc. The program is integrated into Microsoft Windows Explorer using the shell name space extension application program interface developed by Microsoft.

Claims

1. A method of encrypting a file on a computer, said method including:

receiving an electronic file at an application on a computer;

encrypting said electronic file to form an encrypted electronic file using said application on said computer,

wherein said encrypting includes asymmetrically encrypting said electronic file;

placing said asymmetrically encrypted electronic file in an electronic .zip file archive; and

placing encryption information relating to said asymmetrically encrypted electronic file inside said electronic .zip file,

wherein said electronic .zip file archive has been enhanced to allow encryption information relating to said asymmetrically encrypted electronic file to be placed inside said electronic .zip file.

2. The method of claim 1 further including:

compressing said file before encrypting said file.

3. The method of claim 2 wherein said compressing employs a .zip-type compression algorithm.

4. The method of claim 2 wherein said compressing employs a Deflate-type compression algorithm.

5. The method of claim 1 wherein said file is not compressed before encrypting.

6. The method of claim 1 wherein said asymmetrically encrypting employs a public key.

7. The method of claim 1 wherein said asymmetrically encrypting employs a X.509 digital certificate.

8. The method of claim 1 wherein said file includes a file characteristic, said method further including:

encrypting said file characteristic to form an encrypted file characteristic; and

placing said encrypted file characteristic in said .zip file archive.

9. The method of claim 8 wherein said encrypting employs asymmetric encrypting.

10. The method of claim 9 wherein said asymmetric encrypting employs a public key.

11. The method of claim 9 wherein said asymmetric encrypting employs a X.509 digital certificate.

12. The method of claim 8 wherein said file characteristic includes the name of said file.

13. The method of claim 1 further including:

digitally signing said encrypted file using a digital signature.

14. The method of claim 13 wherein said digital signature is a PKI based digital signature.

15. The method of claim 13 wherein said digital signature uses an X.509 based certificate.

16. A method of encrypting a file on a computer, said method including:

receiving an electronic file at an application on a computer;

encrypting said electronic file to an encrypted electronic file using said application on said computer,

wherein said encrypting includes asymmetrically encrypting said electronic file;

placing said asymmetrically encrypted electronic file in an electronic .zip file archive; and

placing encryption information relating to said asymmetrically encrypted electronic file inside said electronic .zip file,

wherein said electronic .zip file archive has been enhanced to allow encryption information relating to said asymmetrically encrypted electronic file to be placed inside said electronic .zip file,

wherein said electronic .zip file archive is electronically transmittable.

17. A method of encrypting a file on a computer, said method including:

receiving an electronic file at an application on a computer;

encrypting said electronic file to form an encrypted electronic file using said application on said computer,

wherein said encrypting includes asymmetrically encrypting said electronic file;

placing said asymmetrically encrypted electronic file in an electronic .zip file archive; and

placing encryption information relating to said asymmetrically encrypted electronic file inside said electronic .zip file,

wherein said electronic .zip file archive has been enhanced to allow encryption information relating to said asymmetrically encrypted electronic file to be placed inside said electronic .zip file,

wherein said electronic .zip file archive is electronically stored.