System for automatic decryption of file data on a per-use basis

Cryptography – Cryptanalysis

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

380 25, 380 49, H04L 900

Patent

active

057968250

ABSTRACT:
A machine system for automatic decryption of confidential file data on a per-use basis and automatic later elimination of the decrypted data by scorching and/or re-encrypting is disclosed. The system can operate within a multi-threaded environment. The following features are provided for secure and automatic recryption: (1) use of file-exclusion lists; (2) use of application-program exclusion lists; (3) decrypting as needed in response to intercepted file-OPEN requests; (4) encrypting as needed in response to intercepted file-CLOSE requests; (5) delaying post-CLOSE encryption in special cases; (6) delaying retry of failed encryption; (7) keeping track of the number of application programs that are using each piece of decrypted plaintext; (8) identifying non-confidential files according to the directories they are contained within; (9) including encryption and decryption rules within directories that contain confidential files; and (10) avoiding unnecessary encryption of non-modified plaintext.

REFERENCES:
patent: 5394469 (1995-02-01), Nagel et al.
patent: 5481701 (1996-01-01), Chambers, IV
patent: 5584022 (1996-12-01), Kikuchi et al.
patent: 5606610 (1997-02-01), Johansson
patent: 5699428 (1997-12-01), McDonnal et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System for automatic decryption of file data on a per-use basis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for automatic decryption of file data on a per-use basis , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for automatic decryption of file data on a per-use basis will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1122950

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.