Decode the number using the given private key. Decode the number M = 15 using the private key d = 53 and n= 77. Assume you are decoding the number using the RSA cryptosystem. Note: You can use the Modular Exponentiation calculator to help with the calculation.

I need help with the following problems in cryptography. A. Encrypt the message “Freedom” using the Playfair matrix M F H I K U N O P Q Z V W X Y E L A R G D S T B C T B. Construct the Playfair matrix with the keyword “LARGEST” and encrypt the message “Freedom” again. C. Compare the results obtained in A and B. How do you account for these results?

One of the one-way functions used in public key cryptography is integer multiplication/factorization. Multiplying two integers is easy, but factoring is hard. The number 1765243 is the product of two primes. What is the smaller of the two primes? What is the largest of the two primes?

In order to decode the following messages, you will need to determine the cipher used. All of them have been encrypted using one of the methods we saw in the cryptography lecture. The full key to that lecture is in canvas. Need to name the method used to decipher it and show steps in using that method. Do not hesitate to ask questions in the virtual office hours. 2. SI HT EG AS SE MD LU OH ST ON EB DR AH TA LL AR OF UO YO TE RU GI FT UO. EH TT XE NE CN ET NE SS IN AT EB AH PL AD NA DR OW DE TA LE RR OC RE HP IC.

Perform encryption and decryption using the RSA algorithm for the letter "S". Show all steps in details when p=5 , q=7 , e=5.

(1) Find a quote that you like. Make sure that the total number of characters is at least 50 and no more than 100.  (2) Then pick a number that is between 4 and 24 as your additive key.  (3) Create a table of correspondence of 26 alphabets in plaintext and the ciphertext.  (4) Use the table of correspondence to encode the quote you found in Part (1). Post the encrypted message:For example, here is a quote from John DeweyFailure is instructive. The person who really thinks learns quite as much from his failures as from his successes.We will use additive key 17. The table of correspondence between plaintext and ciphertext is as follows.(attached)      Thus the encrypted message isWRZ CLI VZJ ZEJ KIL TKZ MVK YVG VIJ FEN YFI VRC CPK YZE BJC VRI EJHLZK VRJ DLT YWI FDY ZJW RZC LIV JRJ WIF DYZ JJL TTV JJV J(5) Pick an encrypted message from your classmate and try to decrypt it. Remember to use the frequency table because you will not have access to the additive key. Make sure to include all…

Encrypt the first 4 letters of your last name as a block of data to be encrypted. (Let A=1, B=2, C=3,...Z=26). Decrypt the encrypted number to demonstrate that your system works.   lastname is john

Encode the bold message using a one-time pad. Then reverse the process to decode the encrypted message. You may perform the calculations manually or automate by writing a computer program. Show the details of all steps in the process. MATH 221 covers the basics of Cryptography!

NEED HELP WITH PYTHON CODE. ALSO, PLEASE PROVIDE DETAILS SEPARATELY ON HOW AND WHAT DID U USE TO GET UR CODE DONE.

Correct answer will be Upvoted else downvoted. Thank you! Monoalphabetic ciphers are stronger than Polyalphabetic ciphers because frequency analysis is tougher on the former. i) True ii) False