Application and Analysis of Security Algorithms on Embedded processor is a student-friendly, practical and application oriented book. It gives a solid background in the fundamentals of encryption algorithms like AES (Advanced Encryption Standard) and RC4 ( Rivest Cipher 4). The results emerged from comparison of AES and RC4 on 8051 microprocessor were highly remarkable. This book aims at building an idea that can be extended to other security algorithms to construct a wide range of comparison when implemented on various embedded systems like ARM, FPGA, and Hardware/Software co-design using IC's. Salient Features AES encryption algorithm RC4 encryption algorithm 8051 microcontroller Design of Printed circuit board Implemention of AES and RC4 algorithms for real time data on 8051uC using Keil uvision IDE"