WO2002023794A3 - Polarisation encryption/decryption module - Google Patents

Polarisation encryption/decryption module Download PDF

Info

Publication number
WO2002023794A3
WO2002023794A3 PCT/DK2001/000598 DK0100598W WO0223794A3 WO 2002023794 A3 WO2002023794 A3 WO 2002023794A3 DK 0100598 W DK0100598 W DK 0100598W WO 0223794 A3 WO0223794 A3 WO 0223794A3
Authority
WO
WIPO (PCT)
Prior art keywords
encryption
decryption
polarisation
modulating devices
module
Prior art date
Application number
PCT/DK2001/000598
Other languages
French (fr)
Other versions
WO2002023794A2 (en
Inventor
Jesper Glueckstad
Paul Christian Mogensen
Original Assignee
Forskningsct Risoe
Jesper Glueckstad
Paul Christian Mogensen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Forskningsct Risoe, Jesper Glueckstad, Paul Christian Mogensen filed Critical Forskningsct Risoe
Priority to AU2001289586A priority Critical patent/AU2001289586A1/en
Publication of WO2002023794A2 publication Critical patent/WO2002023794A2/en
Publication of WO2002023794A3 publication Critical patent/WO2002023794A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/08—Secret communication by varying the polarisation of transmitted waves

Abstract

A polarisation encryption/decryption module comprising at least two array based modulating devices, preferably spatial light modulators (SLMs), at least one array based intensity detector, and at least one source of electromagnetic radiation. A local region of information displayed on a first of the modulating devices has corresponding local regions on each of the other modulating devices and on each of the detectors. Preferably uses XOR operations. The module is compact in size and capable of performing encryption as well as decryption. Provides fast encryption/decryption because the key may be changed rapidly. May be used for real time encryption/decryption of motion pictures. Further, a method of polarisation encrypting and decrypting information. The encryption/decryption is performed optically while the communication is performed electronically.
PCT/DK2001/000598 2000-09-14 2001-09-14 Polarisation encryption/decryption module WO2002023794A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001289586A AU2001289586A1 (en) 2000-09-14 2001-09-14 Polarisation encryption/decryption module

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23242900P 2000-09-14 2000-09-14
DKPA200001367 2000-09-14
DKPA200001367 2000-09-14
US60/232,429 2000-09-14

Publications (2)

Publication Number Publication Date
WO2002023794A2 WO2002023794A2 (en) 2002-03-21
WO2002023794A3 true WO2002023794A3 (en) 2007-11-08

Family

ID=26068880

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2001/000598 WO2002023794A2 (en) 2000-09-14 2001-09-14 Polarisation encryption/decryption module

Country Status (2)

Country Link
AU (1) AU2001289586A1 (en)
WO (1) WO2002023794A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0306297A (en) * 2002-09-09 2004-09-28 Koninkl Philips Electronics Nv Method for encoding a graphic message, computer program product, and device for reconstructing a graphic message based on a key sequence
CN100495125C (en) * 2006-10-24 2009-06-03 中国科学院上海光学精密机械研究所 Encrypting method and device for real time optical image
US9491425B2 (en) * 2012-07-10 2016-11-08 Empire Technology Development Llc Device and method for projecting a scrambled image
WO2016087393A1 (en) 2014-12-01 2016-06-09 Danmarks Tekniske Universitet Multi-wavelength generalized phase contrast system and method
US11531195B2 (en) 2016-03-08 2022-12-20 The Charles Stark Draper Laboratory, Inc. Reflective bijective method and device for coded aperture image acquisition and reconstruction
US11146393B2 (en) 2017-07-11 2021-10-12 Slux Sagl Method for encoding and decoding data by varying the distinctive characteristics of an optical radiation, encoding device and decoding system
IT201700089136A1 (en) * 2017-08-02 2019-02-02 Slux Sagl Data encoding and decoding method by varying the specific characteristics of an optical radiation, coding device and decoding system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284364A (en) * 1992-06-10 1994-02-08 Anvik Corporation Increased-security identification card system
EP0751480A2 (en) * 1995-06-23 1997-01-02 Siemens Aktiengesellschaft Method and device for encoding and verifying information in the form of a label
JPH0983512A (en) * 1995-09-19 1997-03-28 Olympus Optical Co Ltd Ciphering system and optical exclusive or arithmetic unit used for the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5284364A (en) * 1992-06-10 1994-02-08 Anvik Corporation Increased-security identification card system
EP0751480A2 (en) * 1995-06-23 1997-01-02 Siemens Aktiengesellschaft Method and device for encoding and verifying information in the form of a label
JPH0983512A (en) * 1995-09-19 1997-03-28 Olympus Optical Co Ltd Ciphering system and optical exclusive or arithmetic unit used for the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) *

Also Published As

Publication number Publication date
WO2002023794A2 (en) 2002-03-21
AU2001289586A1 (en) 2002-03-26
AU2001289586A8 (en) 2008-01-10

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