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Related Experiment Video

Updated: Mar 3, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Cyphertext-only attack on the double random-phase encryption: Experimental demonstration.

Guowei Li, Wanqin Yang, Dayan Li

|April 26, 2017

Summary

This summary is machine-generated.

The double random phase encoding (DRPE) optical security technique is vulnerable to cyphertext-only attacks. Even one-time-pad security is compromised, as plaintext images can be recovered from cyphertext alone.

Related Experiment Videos

Last Updated: Mar 3, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Area of Science:

Optical security
Information security
Image processing

Background:

Double Random Phase Encoding (DRPE) is a widely used optical security technique.
Previous security assessments of DRPE have not fully addressed its vulnerability to specific attack vectors.

Purpose of the Study:

To experimentally demonstrate the vulnerability of the DRPE technique to a cyphertext-only attack (COA).
To investigate the security implications of this vulnerability for optical security systems.

Main Methods:

Experimental demonstration of a cyphertext-only attack on the DRPE technique.
Utilizing the statistical ergodic property of speckle.
Analysis of energy spectral density functions of plaintext and cyphertext.

Main Results:

The DRPE technique is shown to be vulnerable to cyphertext-only attacks.
Plaintext images can be successfully recovered from cyphertext alone.
The energy spectral density functions of the plaintext and cyphertext are identical, enabling recovery.

Conclusions:

The security of DRPE is significantly compromised, even when employing a one-time-pad.
This finding reveals a critical security flaw in current optical security techniques.
Further research is needed to develop more robust optical security methods.