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. The following ciphertext message was encrypted using the RSA algorithm and public key (2021,97). 1259 0854 1647 1139 Determine the plaintext message.

. The following ciphertext message was encrypted using the RSA algorithm and public key (2021,97). 1259 0854 1647 1139 Determine the plaintext message.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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### Cryptography Challenge Problems **2. Vigenère Cipher Decryption Task** The following ciphertext message was encrypted using the Vigenère Cipher with the keyword "JEDI": ``` MS. RZ MS QWC. XKMAI LA WS WZH. ``` Determine the plaintext message. --- **3. RSA Decryption Task** The following ciphertext message was encrypted using the RSA algorithm with the public key (2021, 97): ``` 1259 0854 1647 1139 ``` Determine the plaintext message. --- **4. ElGamal Cryptosystem Task** 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. Vernam Cipher and Baudot Code Task** The following two lines of ciphertext were created using a Vernam cipher and Baudot code: ``` 01011 11010 00110 10100 01001 01010 10011 01111 10011 00001 01101 10110 00001 11000 00000 01101 10101 10011 ``` Using the first line of Chapter 2 in our textbook as the key, determine the plaintext message. --- **6. Unscramble Ciphertext Challenge** The ciphertext is: ``` HAGO UM MHE UFUOM! ```
Transcribed Image Text:### Cryptography Challenge Problems **2. Vigenère Cipher Decryption Task** The following ciphertext message was encrypted using the Vigenère Cipher with the keyword "JEDI": ``` MS. RZ MS QWC. XKMAI LA WS WZH. ``` Determine the plaintext message. --- **3. RSA Decryption Task** The following ciphertext message was encrypted using the RSA algorithm with the public key (2021, 97): ``` 1259 0854 1647 1139 ``` Determine the plaintext message. --- **4. ElGamal Cryptosystem Task** 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. Vernam Cipher and Baudot Code Task** The following two lines of ciphertext were created using a Vernam cipher and Baudot code: ``` 01011 11010 00110 10100 01001 01010 10011 01111 10011 00001 01101 10110 00001 11000 00000 01101 10101 10011 ``` Using the first line of Chapter 2 in our textbook as the key, determine the plaintext message. --- **6. Unscramble Ciphertext Challenge** The ciphertext is: ``` HAGO UM MHE UFUOM! ```
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