I need help to solve this assembly language code in MASM $..$ please don't use NASM

Write assembly language program by using MASM $($Irvine library$)$ in visual studio.

Create an encryption key consisting of multiple characters. Use

this key to encrypt and decrypt the plaintext by XORing each

character of the key against a corresponding byte in the

message. Repeat the key as many times as necessary until all

plain text bytes are translated. Suppose, for example, the key

were equal to "ABXmv#$7."$ This is how the key would align with

the plain text bytes: