A company wants to transmit data over the telephone, but it is concerned that its phones may be tapped. All of its data is transmitted as four-digit integers. It has asked you to write a program that will encrypt its data so that the data may be transmitted more securely. Your script should read a four digit integer entered by the user in a prompt dialog and encrypt it as follows: Replace each digit by (the sum of that digit plus 7) modulus 10. Then swap the first digit with the third, and swap the second digit with the fourth. Then output XHTML text that displays the encrypted integer.

3481

What is dao and how it works?

1

Why it is not possible to edit the data once it is done in a block?

1

What is S/MIME ?

1884

What is the principle on which blockchain technology is based on?

5

What are blockchain durability and robustness?

1

What is the Popular Symmetric-Key Encryption Method

899

How to change the encrypted file icon?

2587

What is 51% attack?

5

What is feal?

902

What are on-line/off-line signatures ?

2861

Tell me more about rsa algorithm?

1

Is it true that a block in the blockchain can never have more than one parent block?

1

What do you understand by ico?

5

What is watermarking?

1422