The CesarCrypto is an cryptography software that uses the Cesar cipher technique, it was developed in assembly language using the MIPS-32 architecture and the MARS IDE, the software is able to encrypt and decrypt .txt files and also as text typed directly into the terminal. The software uses the ASCII table to encrypt and decrypt, it uses the decimal range 33 to 126.
Open the CesarCrypto.asm file in the MARS IDE and run.
http://courses.missouristate.edu/kenvollmar/mars/download.htm