Question

Revise the encryption program in the following manner: create an encryption key consisting of multiple characters. Use this key to encrypt and decrypt the plaintext by xoring each character of the key against a corresponding byte in the message. Repeat the key as many times as necessary until all plain text bytes are translated. Suppose, for example, the key was equal to 'abxmv'.

Answer 1

To revise the encryption program, create an encryption key and xor it with the plaintext to encrypt and decrypt the message.

Step-by-step explanation:

The subject of this question is Computers and Technology because it involves encryption and decryption using an encryption key and xor operation.

To revise the encryption program, we need to create an encryption key consisting of multiple characters. We then use this key to encrypt and decrypt the plaintext by xor-ing each character of the key against a corresponding byte in the message. The key is repeated as many times as necessary until all plaintext bytes are translated.

For example, if the key is 'abxmv' and the plaintext is 'hello', the first character of the key ('a') would be xor-ed with the first character of the plaintext ('h'), and so on.