3. Suppose the key is 11 in a multiplicative cipher system. Fill in the chart below. (5 points each) Plain Text Position Multiply by 11 Mod 26 Cipher text Plain Text Position Multiply by 11 Mod 26 Cipher text a 1 b 2 с 3 al d 4 Р e f 5 6 ol n 0 r S t u V W 14 15 16 17 18 19 20 21 22 23 g h i 7 8 9 10 kI m 111 12 13 13 X y 24 25 a. Using the chart above, encrypt the following message: "Will you marry me?" b. Decipher the message: MKLJ UA NWX KXR UXLCPCALUXY Z 26

Q: 2. Euclidean Algorithm Use the Euclidean algorithm to find gcd(12345, 678).

A:

Q: 5. 2x 15 (mod 17) 6. 4x 6 (mod 17)

A: According to our guidelines we can do at most three subpart of a question at a time. So please post…

Q: Find Alice and Bob's common key K by using the Diffie-Hellman-Merkle key exchange scheme with the…

A: The given values for the Diffie-Hellman-Merkle key exchange scheme is given as        M = 5        n…

Q: Encrypt the message KILLTHEBEAST using shift cipher with K=18.

A: We have K=18 Now, in KILLTHEBEAST, the letters correspond to numbers in the English alphabet. K I…

Q: Use RSA cipher from the example we did in class to translate the following message into numeric…

A: Image is attached with detailed solution.

Q: Swifties know All Too Well that as a self-proclaimed Mastermind Taylor Swift is Enchanted by leaving…

A: Swifties know All Too Well that as a self-proclaimed Mastermind Taylor Swift is Enchanted by leaving…

Q: Use the Vigen`ere cipher with key BLUE to encrypt the message SNOWFALL.

A: A =0, B =1, C =2, D = 3, E = 4, F = 5, G = 6, H = 7, I = 8, J =9, K = 10, L = 11, M = 12, N = 13, O…

Q: Use the RSA cipher with public key pq 713 = 23 x 31 and e = 43. a) Encrypt message 'HELP'. Use…

A:

Q: The sign indicator s of a 64-bit machine number is 1 while its characteristic c is 1041 and the…

A: Decimal equivalent form is as follows. -1s2c-10231+f s is the sign indicator c is the characteristic…

Q: DONT USE AI, USE PENCIL AND PAPER WHILE DOING IT. SHOW ANSWER AND RESULTS An RSA cipher has public…

A: Step 1 The given information is as follows:public key pq = 65e = 7 Step 2 (a) Encrypting the message…

Q: Encryt the message "GO." by translating the letter into number, applying the given encrytion…

A: Given: Given a message "GO" and a transfer function f(p)=(p+3) mod 26. To find: Encrypted message by…

Q: Complete the following system: x = 5(mod 2) x = 6(mod 4)

A: Solve it.

Q: Encrypt the message ATTACK using c = (p+12) mod 26 O a. MGGMOX O b. LFFLOW O C. LFFLOX O d. MFFMOW

A: Each letter in the alphabet corresponds to a number between 0 to 26. Letter A B C D E F G H I J K…

Q: An amateur cryptographer wants to encrypt the message "abcde" using two different affine ciphers.…

A: Given data; First affine cipher employs the function Second affine cipher employs the functionTo…

Q: 2. Euclidean Algorithm Use the Euclidean algorithm to find gcd(12345, 678).

A: We need to find the GCD(12345,678)=?

Q: What will be the output of the following C# code? int i, a = 16, b = 8; for (i = 1; i <= 5; i++) {…

A: Note:  ab×2=168×2           =4 So, the if condition will be always satisfied.

Q: Encryt the message "GO." by translating the letter into number, applying the given encrytion…

A: Given: Message "GO" and the transfer function f(p)=(p+3) mod 26. To find: The encrypted message.

Q: Let a, n be positive integers. Knowing that 15a - 13n = 1, we deduce that the multiplicative inverse…

A:

Q: Encode the number using the given public key. Encode the number M = 49 using the public key n = 77…

A: Now we have to find out the encoded number using the RSA cryptosystem. According to RSA crypto…

Q: Use the Caesar cipher (shift of 3 places) to encrypt BRAVE

A: Since, A=0               O=14B=1               P=15C=2              Q=16D=3              R=17E=4…

Q: Suppose the RSA system that is used for sending secret messages has private key (15, 3) and the…

A: General concept of RSA Algorithm, Steps: 1) Consider two large prime numbers p,q2) Calculate n =…

Q: Encode the number using the given public key. Encode the number M = 14 using the public key n = 77…

A:

Q: Encrypt the message AT TEN HEAD NORTH TO TRENCHES using a tabular transposition cipher with rows of…

A:

Q: Arthur and Dara are exchanging messages using the RSA Cipher system and the following information:…

A: We have to verify that Arthur's private exponent 43 is correct given the following information…

Q: Ques 1. Encrypting and Decrypting with the Caesar Cipher using same formula we did in class. Use…

A: AnswerAbout Caesar Cipher Ans - 1)Ans - 2)

Q: The bit XOR of the bitwise 011001 and 100101 is O 111100

A: Truth table of XOR is Input  Input Output 0 0 0 0 1 1 1 0 1 1 1 0

Q: c) Encrypt the message "I NEED HELP" by translating the letters into numbers, applying the…

A:

Q: Decode the number using the given private key. Decode the number M = 15 using the private key d = 53…

A: To decode this using the RSA cryptosystem.

Q: Use the values below to encrypt the numerical message m = 55. Use the following cryptoscheme:…

A: Given , cryptoscheme-Encryption : C=m+kmod NDecryption : m=c-k mod NN=66k=20

Q: Suppose Alice and Bob have the same RSA modulus n and suppose that their encryption exponents eд and…

A:

Q: Take the last four digits ABCD of your student identification number, and let AB and CD be the…

A:

Q: 13. Suppose a message is encrypted using the RSA system with n = 53*61 and e = 19. Suppose the…

A: It is given that, a message is encrypted using the RSA system with n = 53*61 and e = 19.  Suppose…

Q: 23 3. Use the inverse of A = to decode the following 85 120 6 8 10 15 84 117 42 56 90 4 3 125 60 80…

A: Solution :-

Q: A safer system would be to use modular multiplication instead of addition. But if we use modular…

A: The modular arithmetics gives remainder obtained upon division. For example, 26≡1mod 25 means on…

Q: 4. Use the encoding formula: y = x + 12 (mod 26). a. Encode CF S. b. Find the decoding formula and…

A:

Q: Decode the number using the given private key. Decode the number M = 15 using the private key d = 53…

A: Solution :-

Q: Encrypt the message " MATH " by translating the letters into numbers and then applying the…

A:

Q: Encrypt the message " MATH " by translating the letters into numbers and then applying the…

A:

Q: 4. A linear code is given by the encoding function y = ax+b (mod 26) and the decoding function x =…

A: 4.(a) Given a = 11, b = 2, the encoding function is given by         y ≡ 11x + 2 (mod 26)…

Q: Given this: C 1 2 3 4 5 P 15 JK 6 7 8 9 10 11| 12 A B F M 13 R V 14 16 17 18 19 20 21 22 23 24 25 0…

A: