Acquisition of dorsal hand vein images via infrared camera and preprocessing Designing a new chaoticbased random number generator on a microcomputer Encryption of vein images on a microcomputer with a new chaotic-based random number generator and securely stored in the databaseIn this study, dorsal hand vein images are encrypted with a new chaotic-based random number generator on a microcomputer and stored securely in the database. In the scope of the study, the images of the dorsal hand vein taken by an infrared camera from the subjects were enhanced through pre-processing methods. A new chaotic-based random number generator has been designed to securely store the hand vein images that can be used in identification systems. The random numbers generated prior to the encryption process were subjected to the most widely accepted NIST-800-22 and ENT tests, and successful results from all tests were obtained. The random numbers obtained from the new chaotic system were subjected to XOR with 65536 pixels starting from the first pixel in the dorsal hand vein image. Chaos-based encryption system performance was evaluated with security analyzes as commonly used in literature such as histogram, correlation, entropy, NPCR, and UACI. It has been shown that hand vein images can be used in mobile identification systems with the help of this proposed encryption modality. Figure A. Histogram analysis of the 8-bit vein image and encrypted vein image.Purpose: The aim of this study is to encrypt hand vein images that vary from person to person on a microcomputer and store them securely in the database.
Theory and Methods:The images of the dorsal hand vein taken by an infrared camera from the subjects were enhanced through preprocessing methods A unique random number generator was designed using a new 3D chaotic system in the Raspberry Pi microcomputer. The random numbers obtained from the new chaotic system were subjected to XOR with 65536 pixels starting from the first pixel in the dorsal hand vein image.
Results:The vein images were encrypted with the newly designed random number generator and have been successfully passed through various security analyzes.
Conclusion:It has been shown that hand vein images can be used in mobile identification systems with the help of this proposed encryption modality.