Assembler_programs

Programs to encrytp/decrypt message and zoom keyboard input.

xor.asm

The program to encrypt and decryt messages by doing xor on input text and given key text.
The input data are: input file name, output file name, key text in quotes. Encryption:

  xor file_1.txt file_2.txt "key to encrypt message"

Encryption using xor i symmetric, so the same key must be used to decrypt message. Decryption:

  xor file_2.txt file_3.txt "key to encrypt message"

zoom.asm

The program to zoom and display given text. The text is displayed on screen graphic mode VGA.
The input data are: a number (zoom) and a text to enlarge.

  zoom 8 "text to enlarge"

Letters in letters.txt made by @retkiewi based on.