Please help using java Read the instructions carefully The Super SpyRead This Carefully!! (For your eyes-only)Your task, should you choose to accept it, is to design an application thatwill accept any phrase as input and allow the user to encrypt or decryptit. The program should use one or two keys (two is highly recommended)to encrypt the message. These keys could be made up of an integer - anumber between -32767 and +32768 or anything else you think might work. As anexample, the key could be used to shift the letters of the alphabet to the right or left.For example, the letter “A" encoded with a key of "3" would produce the letter "D",three letters to its right in the alphabet. If the key is large enough that it goes past theend of the alphabet, the program should "wrap around" to a letter near the beginningof the alphabet. For example the letter “Z" encoded with a key of 3 would become"C". The decoding process should be done in reverse. You can use this scheme if youwish, but I challenge you to design one that I cannot crack!Program Restrictions:· Keep lower case letters as lower case and upper case letters as upper case.· Make no changes to all non-letters (i.e. numbers, punctuation, special characters,etc.) AND these non-letter characters do NOT need to be encrypted.Suggested Program structure: Your program MAY include the following four methods.It may have different/additional ones. Each method must identify its authorthrough commenting.public static boolean isALetter (String letter)Inputs a one character string and returns True if the character is a letter (i.e. a to z or A to Z).Returns false if it is not.A function to check that the password or encryption key is valid. For example if you decide to use the algorithm above:public static int putkeylnRange ( int encryptkey )• Takes any key in the integer range (-32767 to +32768) as input and returns a number between 1 and 26 (the rangeof the alphabet). (hint: check if input is within the alphabet)public static char encode (char letter, int eneryKey )• Inputs one character and an integer key and returns an encoded character based on the key.public static char decode (char letter, int encrykey)

The above mentioned cipher is denoted as an additive cipher where each alphabet is encrypted by…

Read This Carefully!! (For your eyes-only) Your task, should you choose to accept it, is to design an application t will accept any phrase as input and allow the user to encrypt or decry it. The program should use one or two keys (two is highly recommend to encrypt the message. These keys could be made up of an integer - a number between -32767 and +32768 or anything else you think might example, the key could be used to shift the letters of the alphabet to th For example, the letter "A" encoded with a key of “3" would produce three letters to its right in the alphabet. If the key is large enough that end of the alphabet, the program should "wrap around" to a letter near

Read This Carefully!! (For your eyes-only) Your task, should you choose to accept it, is to design an application t will accept any phrase as input and allow the user to encrypt or decry it. The program should use one or two keys (two is highly recommend to encrypt the message. These keys could be made up of an integer - a number between -32767 and +32768 or anything else you think might example, the key could be used to shift the letters of the alphabet to th For example, the letter "A" encoded with a key of “3" would produce three letters to its right in the alphabet. If the key is large enough that end of the alphabet, the program should "wrap around" to a letter near

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Please help using java Read the instructions carefully

The Super Spy
Read This Carefully!! (For your eyes-only)
Your task, should you choose to accept it, is to design an application that
will accept any phrase as input and allow the user to encrypt or decrypt
it. The program should use one or two keys (two is highly recommended)
to encrypt the message. These keys could be made up of an integer - a
number between -32767 and +32768 or anything else you think might work. As an
example, the key could be used to shift the letters of the alphabet to the right or left.
For example, the letter “A" encoded with a key of "3" would produce the letter "D",
three letters to its right in the alphabet. If the key is large enough that it goes past the
end of the alphabet, the program should "wrap around" to a letter near the beginning
of the alphabet. For example the letter “Z" encoded with a key of 3 would become
"C". The decoding process should be done in reverse. You can use this scheme if you
wish, but I challenge you to design one that I cannot crack!
Program Restrictions:
· Keep lower case letters as lower case and upper case letters as upper case.
· Make no changes to all non-letters (i.e. numbers, punctuation, special characters,
etc.) AND these non-letter characters do NOT need to be encrypted.
Suggested Program structure: Your program MAY include the following four methods.
It may have different/additional ones. Each method must identify its author
through commenting.
public static boolean isALetter (String letter)
Inputs a one character string and returns True if the character is a letter (i.e. a to z or A to Z).
Returns false if it is not.
A function to check that the password or encryption key is valid. For example if you decide to use the algorithm above:
public static int putkeylnRange ( int encryptkey )
• Takes any key in the integer range (-32767 to +32768) as input and returns a number between 1 and 26 (the range
of the alphabet). (hint: check if input is within the alphabet)
public static char encode (char letter, int eneryKey )
• Inputs one character and an integer key and returns an encoded character based on the key.
public static char decode (char letter, int encrykey)

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