Kasorn Galajit creator Afzulpurkar, Nitin V. Chairperson Pasin Israsena Co-chairperson Chumnarn Panyasai Examination committee National Science and Technology Development Agency (NSTDA) Scholarship donor Asian Institute of Technology Fellowship Scholarship donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2007 continuing eng 92 p. : ill. This study describes an Extended Tiny Encryption Algorithm (XTEA) to implement on FRID and optimization of the hardware implementation for area, timing and Power. XTEA was applied with hash algorithm to do authorization and data integrity due to security and privacy concern in secure RFID system The objective of the study is to design the module and implement on hardware to do encryption function, also optimization for area constrain. The additional feature which is extended from the generic module of encryption is authorization function and data integrity. The multiple designs are made to compare the best solutions to meet the system requirement. VHDL source codes are designed then simulate and verify, then implement on real hardware to test function and performance of designs. The results show that the proposed algorithm performs well on encryption function and authorization. Results from multiple designs show the trade off between area, timing and power requirement in each system. The design of XTEA based hash algorithm using one XTEA unit meets the requirement of the secure RFID system A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Microelectronics, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 2007 Radio frequency identification systems Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B11074 http://203.159.5.9/ait-thesis/detail.php?q=B11074 090414 20260818170806.0