New Novel FPGA Based Image Encryption Methods Using Multiple Chaotic Maps

In the digital era, the security of information has become paramount, particularly in the realm of image data transmission. Encryption is the process of encoding information to prevent unauthorized access and plays a crucial role in ensuring this security. The two proposed methodologies employ four distinct Chaos Pseudo Random Bit Generators (PRBGs): the Lozi map, Tent map, Logistic map, and Quad map. The image is divided into four segments, each encrypted using one of the PRBGs, enhancing the complexity and security of the encrypted image. The randomness of the generated cryptographic keys using the National Institute of Standards and Technology (NIST), which is a Statistical Test Suite for test Pseudorandom Number Generators for Cryptographic Applications. The encryption scheme was implemented on a Field Programmable Gate Array (FPGA) ZYNQ702 evaluation board kit, The results demonstrated a significant improvement in the NIST's A Statistical Test Suite outcome compared to existing methods, underscoring the superior performance of the proposed encryption technique. This research proposed two systems with comparative study and contributes to the field of image encryption by offering more secure effective methods, thereby paving the way for safer image data transmission utilize FPGA with 667 MHZ frequency and 5.3 Gbps throughput.