Encrypt and Decrypt “ABZSTYXN” using the key k=7 by shift￾cipher method.

Anyone please solve this question

[mahitha rani]

Answer 1

[David Hill]

key=7;
msg='ABZSTYXN';
encrypt=char(mod(msg-'A'+key,26)+'A');
decrypt=char(mod(encrypt-'A'-key,26)+'A');