Transformation of ephemeral material

Details Transformation of ephemeral material Transformation of ephemeral material

1992-12-04

1994-08-23

Swann, Tod R.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 4, 380 25, H04K 100

Patent

active

053414292

ABSTRACT:
A bidirectional process allows remote transformation of ephemeral materials between an original form and a denatured form without changing the content of the material from its original form and without restricting the resolution, functionality, and/or utility of the original material in the denatured form. The denatured material provides both a limited use form, which allows temporary full function evaluation of the material; and an enabled form, which allows unrestricted full function use of the material. A security system supervises conversion of the denatured material from the limited use form to the enabled form.

REFERENCES:
patent: 4646234 (1987-02-01), Tolman et al.
patent: 4658055 (1987-08-01), Thomas
patent: 4658093 (1987-04-01), Hellman
patent: 4740890 (1988-04-01), Willaim
patent: 4888798 (1989-12-01), Earnest
patent: 5014234 (1991-05-01), Edwards, Jr.

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