Optical Cryptosystems. Naveen K. Nishchal

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СКАЧАТЬ 5 Image watermarking and hiding

       5.1 Introduction

       5.2 Information hiding and watermarking under the DRPE framework

       5.2.1 FRT domain watermarking

       5.3 Optical asymmetric watermarking

       References

       6 Polarization encoding

       6.1 Introduction

       6.2 Double random phase polarization encoding

       6.3 Polarization encoding-based asymmetric cryptosystem

       6.3.1 Color image encryption

       References

       7 Digital holography-based security schemes

       7.1 Introduction

       7.2 Phase-shifting interferometry

       7.3 Numerical reconstruction of digital holograms

       7.3.1 Discrete Fresnel transformation

       7.3.2 Convolution approach

       7.3.3 Angular spectrum method

       7.4 Information security using digital holography

       7.5 Digital holography-based geometries for image encryption

       7.5.1 Fourier domain DRPE through digital holography

       7.5.2 FRT domain DRPE through digital holography

       References

       8 Securing fused multispectral data

       8.1 Introduction

       8.2 Image fusion principle using wavelet transform

       8.3 Security of fused data/images

       8.4 Asymmetric cryptosystems with fused color components

       8.5 Color image encryption using XOR operation with LED

       References

       9 Chaos-based information security

       9.1 Introduction

       9.2 Chaos and cryptography

       9.3 Chaos functions

       9.4 Chaos-based optical asymmetric cryptosystem

       References

       10 Optical asymmetric cryptosystems

       10.1 Introduction

       10.2 Asymmetric cryptosystems

       10.3 Phase retrieval

       10.3.1 Phase retrieval for security

       10.3.2 Phase retrieval: mathematical formulation

       10.3.3 Modified GS algorithm for image multiplexing and encryption

       10.4 Photon counting imaging

       10.5 PCI and phase-truncated FrT-based asymmetric encryption

       MATLAB code for phase retrieval

       References

       11 Attacks on optical security schemes

       11.1 Introduction

       11.2 Brute-force attack

       11.3 Differential attack

       11.4 Known-plaintext attack

       11.5 Chosen-plaintext attack

       11.6 Chosen-ciphertext attack

       11.7 Specific attack

       11.8 Collision attack

       11.9 Occlusion attack

       11.10 Effects of additive and multiplicative noise

       References

       12 СКАЧАТЬ