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Forgery attack on optical encryption based on computational ghost imaging.

Sheng Yuan, Lanjie Wang, Xuemei Liu

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    Optical encryption using computational ghost imaging (CGI) is vulnerable to forgery attacks. Attackers can exploit high error tolerance in ciphertexts to create fake keys, potentially deceiving recipients. This finding aids in upgrading CGI encryption security.

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    Area of Science:

    • Optics
    • Information Security
    • Cryptography

    Background:

    • Cryptosystems face various attacks, including cryptanalysis, forgery, and deception.
    • Optical encryption systems offer alternative security methods but require thorough vulnerability assessment.

    Purpose of the Study:

    • To investigate the security vulnerabilities of optical encryption systems based on computational ghost imaging (CGI).
    • To identify specific attack vectors, such as forgery attacks, within CGI-based encryption.

    Main Methods:

    • Analysis of the error deviation tolerance in CGI-based optical encryption.
    • Simulation or theoretical modeling of forgery attacks on the CGI encryption system.

    Main Results:

    • The study reveals a security vulnerability in CGI optical encryption due to its high tolerance for ciphertext error deviation.
    • This tolerance enables attackers to forge fake keys from intercepted ciphertexts.
    • Successful forgery can lead to deception or confusion for the intended receiver.

    Conclusions:

    • CGI-based optical encryption systems are susceptible to forgery attacks.
    • The identified vulnerability stems from the system's error tolerance.
    • Understanding this weakness is crucial for enhancing the security of CGI encryption methods.