A novel optical multi-image data protection scheme based on phase-truncated asymmetric ciphers and 2D-CSCCM

Abstract Existing remote sensing platforms often overlook the security of the remote sensing image acquisition process, creating opportunities for potential attackers to exploit. To address this issue, this paper proposes a novel optical encryption framework (ECC_DPM) based on elliptic curves and phase truncation to ensure the secure transmission of optical keys. Furthermore, an optical encryption scheme is designed based on ECC_DPM to enable synchronous secure encryption during the remote sensing data acquisition stage, ensuring that remote sensing data remains in a ciphertext state from acquisition to storage and distribution. Finally, the proposed framework and encryption scheme are evaluated for security using a threat model and simulation experiments. The experimental results demonstrate that the encryption scheme effectively resists various statistical analysis attacks.