A Caesar cipher uses a shift of each character by a key with a value between 1 and 255.An a with a shift of 3 becomes a d.For the encrypt method below, select the correct body.Assume the key shift property is accessible to the method.
public int encrypt(int b)
{
__________
}
A)return (b + key) % 256);
B)return (b + key % 26);
C)return (b + key);
D)return (b + 26 % key);

Question

Quizplus · Accepted Answer

The correct body for the `encrypt` method is `return (b + key) % 256;`. This is because the Caesar cipher described operates on a byte level with values between 0 and 255. Adding the key to the byte value `b` and then using modulo 256 ensures that the result wraps around correctly within the 0-255 range, adhering to the constraints of byte values.

A Caesar Cipher Uses a Shift of Each Character by a Key