please answer all and show steps. write neat please!!

4. Decrypt the following message: "Cher zngurzngvpf vf, va vgf jnl, gur cbrgel bs ybtvpny vqrnf." Nyoreg Rvafgrva. 10 points] 5. Encrypt the famous quote "Once we accept our limits, we go beyond them." by Albert Einstein using Vigenere cipher with key "MATH". 10 points] 6. Let p -23, 17,e 59, d 179 as in Module 3 Lesson 4. Encrypt the message m 31 (You must show all your steps as in the lecture videos to receive full credit, including the work done for exponentiation with square and multiply algorithm!)30 points)