A New Encryption Cipher for Securing Digital Images of Video Surveillance Devices Using Diffie-Hellman-MD5 Algorithm and RGB Pixel Shuffling. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire (EMS, 2013)

A Hybrid Encryption Technique for Securing Biometric Image Data Based on Feistel Network and RGB Pixel Displacement. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (SNDS, 2014)

A Security Technique for Authentication and Security of Medical Images in Health Information Systems. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (ICCSA (Short Papers/poster papers/PhD student showcase works), 2015)

Feature Based Encryption Technique for Securing Digital Image Data Based on FCA-Image Attributes and Visual Cryptography. - Quist-Aphetsi Kester; Anca Christine Pascu; Laurent Nana; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (ICCSA (4), 2015)

A Fast Discrete Cosine Transform and a Cryptographic Technique for Authentication and Security of Digital Images. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (SSCC, 2015)

A Hybrid Cryptographic and Steganographic Security Approach for Identity Management and Security of Digital Images. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (SSCC, 2015)

A Hybrid Image Cryptographic and Spatial Digital Watermarking Encryption Technique for Security and Authentication of Digital Images. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (UKSim, 2015)

A Novel Hybrid Discrete Cosine Transformation and Visual Cryptographic Technique for Securing Digital Images. - Quist-Aphetsi Kester; Laurent Nana; Anca Christine Pascu; Sophie Gire; Jojo Moses Eghan; Nii Narku Quaynor (UKSim, 2015)

Formal proof of security algorithms based on reachability reduction. - Mohamed Bouziane; Sophie Gire; François Monin; Laurent Nana (MEDES, 2016)