solve please

Chapter 2: 1. Here are few words with plaintext and ciphertext and next to them. What key was used in the Caesar cipher? a. ASTRONOMY - HZAYVUVTF b. ROSEBUD - UMYVOX c. YAMAMOTO - PRDRDFKF 2. Decrypt the following ciphertext with key 4 a. "MQTSWXSV: E VMZEP EWTMVERX XS TYFPMG LSRSVW." C. 3. How long it takes on average for a computer that can do 10000 guesses per second to predict the correct password the following cases. a. 8 digit password b. 8 character English password (not case sensitive) 7-character English password (case sensitive) d. 6-character password that uses both digits and English lower/upper case alphabets 4. Can you analyze the following cipher-text from mono alphabetic cipher and guess some of the letters SIDKHKDM AF HCRKIABIE SHIMC KD LFEAILA 5. Questions from Textbook th edition (Pg. 113-116): 3.10.11. 12. 19 6. How long it takes for a computer that can do 100 million encryptions in sec to break the following keys. Give both average and worst case answers. a. 56 bit key b. 48 bit key Playfair cipher example key is " MOHAMMAD new key "MOHAD MOHAD B CEFG I KLNP QRSTU V W X Y Z MWE ARE TESTING PLAYFAIR CIPHER SS HARP After formatting = WE AR ET ES TI NG PLAY FA IR CIPHER SX SH AR PA C=XCOT FS LX QN PF IN FANF KQ BK LD CSXH XE T ND