週 teacher Recover Your Apple... FICE/FELE Home P mathlab O AirMethods Corpor... E + %00% 3. The following ciphertext message was encrypted using the RSA algorithm and public key (2021,97). 1259 0854 1647 1139 Determine the plaintext message. 4. Using the ElGamal cryptosystem, create and encrypt a message for me. The plaintext message must be a recognizable word or phrase and at least eight alphabetic characters long. Divide the numerical plaintext into two digit blocks. Use a unique ephemeral key (j) to encrypt each block. My public key is (89, 14, 8). 5. The following two lines of ciphertext were created using a Verman cipher and Baudot code. 01011 11010 00110 10110 01001 01100 10101 10011 01111 10011 Using the first line of Chapter 2 in our textbook as the key, determine the plaintext message. 6. The ciphertext HAGO UM MHE UFUOM! was enerypted using a Hill Cipher of the form C1 = 5P1 +3P (mod 26) C2 = 7P; + 8P, (mod 26) Decrypt the message. 63°F Sunny 28. VI delete insert IA prt sc f12 OL

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