Apparatus and method for storing data

Patent 5606610 Issued on February 25, 1997. Estimated Expiration Date:

June 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Hybrid encryption method and system for protecting reusable software components
Patent #: 5343527
Issued on: 08/30/1994
Inventor: Moore

Secure telecommunications Patent #: 5392357
Issued on: 02/21/1995
Inventor: Bulfer, et al.

Inventor

Johansson, Jan

Assignee

Anonymity Protection In Sweden AB

Application

No. 464891 filed on 06/28/1996

US Classes:

713/193, By stored data protection380/45, Multiple key level707/9Privileged access

Examiners

Primary: Cangialosi, Salvatore

Foreign Patent References

93/11619 WO. 06/13/1993

International Class

H04L 009/00

Foreign Application Priority Data

1994-11-30 SE

Abstract

A method and apparatus for storing data comprising an original identity(OID) and associated descriptive information(DI) are disclosed. By means of a first algorithm(ALG1), the original identity(OID) is encrypted to an update identity(UID) which, by means of a reversible algorithm(ALG2), is encrypted to a storage identity(SID) which is stored as a record(P) on a storage medium along with associated descriptive information(DI). At the times when storage identities(SID) of selected records(P) are to be replaced with new storage identities(SID'), the storage identities(SID) are decrypted in order to recreate the corresponding update identities(UID), which then are encrypted, by means of a new altered reversible algorithm(ALG2'), to new storage identities(SID') intended to replace the previous storage identities (SID).