Title:
CRYPTOGRAPHIC COMMUNICATION PROCESS AND APPARATUS
Document Type and Number:
WIPO Patent Application WO2000002340
Kind Code:
A3
Abstract:
A communication system, which includes an origination space, a communications channel, and a destination space associated with the origination space via the communications channel. The origination space includes an encryption engine (12) for generating an output symbol Ot based on an input symbol It and means for receiving an encrypt key (10), an encrypt text/key (14) relation, and the input symbol. The destination space includes a decryption engine (18) for generating a decrypted symbol I't based on the output symbol received from the origination space via the communications channel and means for receiving a decrypt key (20) and a decrypt text/key (22) relation. The encrypt text/key (14) relation controls the encryption engine such that Ot= XN(t) + YN[XN-1(t) + YN-1[XN-2(t) + ...+ Y2[X1(t) + Y1[It + X0(t)]]...]], mod W, where XN, XN-1, ..., X1, X0 are N+1 additive transformations defined by the encrypt key (10), where YN, YN-1, ..., Y2, Y0 are N permutations defined by the encrypt key (10), and where W represents the number of possibilities for each permutation defined by the encrypt key (10).
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Inventors:
SCHEIDT EDWARD M
WACK C JAY
WACK C JAY
Application Number:
PCT/US1998/013626
Publication Date:
September 12, 2002
Filing Date:
July 02, 1998
Export Citation:
Assignee:
TECSEC INC (US)
International Classes:
H04L9/00; G09C1/00; (IPC1-7): H04L9/18; H04L9/28
Foreign References:
| US5835597A | 1998-11-10 | |||
| US5787173A | 1998-07-28 |
Other References:
See also references of EP 1260052A4
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