write assembly language program to encrypt and decrypt thedata
when the user press enc the data is encrypt and when the userpress dec the data decrypt
Answer
DATA SEGMENT
MSG1 DB 10,13,’ENTER STRING HERE :-$’
MSG2 DB 10,13,’ENCRYPTED STRING IS :- $’
MSG3 DB 10,13,’DECRYPTED STRING IS : $’
P1 LABEL BYTE
M1 DB 0FFH
L1 DB ?
P11 DB 0FFH DUP (‘$’)
DATA ENDS
DISPLAY MACRO MSG
MOV AH,9
LEA DX,MSG
INT 21H
ENDM
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOVDS,AX
DISPLAY MSG1
LEA DX,P1
MOVAH,0AH
INT 21H
LEA SI,P11
MOV CL,L1
CALL ENCRYPT
DISPLAY MSG2
DISPLAY P11
LEA SI,P11
MOV CL,L1
CALL ENCRYPT