Write another method to decrypt the ciphertext into plain text.

Hints

Helpful skills and knowledge required to complete the practical problem are not limited

to the followings:

$2$D array

Conditional if$...$elseor switch

Iteration loop foror whileor do$...$while

Critical thinking and problem solving skills

Submission requirements

Copy the source code into Word file.

Also zip your source code for submission to OAS.

All codes to be accompanied with proper comments, where necessary.

Provide screen shots and description of your inputs and outputs $($e$.$g$.$ tests using

different texts$)$ for:

Encryption method

Decryption methodProgramming Practical

Suppose that you wish to setup a secure communication between you and your secret

team members. A simple encryption algorithm that generates ciphertext, which will

only be readable after decryption would be great!

Write a program that encrypts an input string using the following encryption algorithm:

$($a$)$Create an array with size at least as big as the length of the plain string.

$($b$)$ For each cell of the array $($left to right, row by row$)$:

Fill with one character of the plain string at a time.

Replace blanks with asterisks $(*).$

$($c$)$Fill the additional empty cell with full$-$stops$(.).$

$($d$)$ Finally, output the encrypted text by reading the array downward, column by

column.

Example:

Given plain text: "This is a secret text."

Firstly, decide on the number of columns. Suppose you choose $4.$

Next, since the length of the text is $22,6$ by $42-$dimensional $(2$D$)$ array is

reasonable $((6*4=24)).$ An example $2$D$-$array is given as follows:

Output: $T^{*}a{c}^{*}th{i}^{*}t.$issee.s$*$etx$."$

Program specifications

Construct Java program called Secret.

Your program would accept an input plain text, encrypt it$,$ and print the cipher

output. Hints: Input can be accepted in any form, e$.$g$.$ console, dialog box, files, or hard$-$coded.

Test your program with different plain texts and array column size to ensure error$-$

free.

Include comments to make your class is readable.