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(5) Elgamal public key cryptosystem (decryption): Start with the prime p = 17 and the primitive root g = 3. Alice sends Bob the public key A = 5. Bob encrypts the message m and sends the pair of numbers (8,2) to Alice. Alice's secret key is a = 5. Using Elgamal public key decryption, Alice computes the plaintext message m from the ciphertext (8, 2). What is the number m that Alice obtains?

(5) Elgamal public key cryptosystem (decryption): Start with the prime p = 17 and the primitive root g = 3. Alice sends Bob the public key A = 5. Bob encrypts the message m and sends the pair of numbers (8,2) to Alice. Alice's secret key is a = 5. Using Elgamal public key decryption, Alice computes the plaintext message m from the ciphertext (8, 2). What is the number m that Alice obtains?

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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(5) Elgamal public key cryptosystem (decryption): Start with the prime p = 17 and the primitive root g = 3. Alice sends Bob the public key A = 5. Bob encrypts the message m and sends the pair of numbers (8,2) to Alice. Alice's secret key is a = 5. Using Elgamal public key decryption, Alice computes the plaintext message m from the ciphertext (8, 2). What is the number m that Alice obtains?
Transcribed Image Text:(5) Elgamal public key cryptosystem (decryption): Start with the prime p = 17 and the primitive root g = 3. Alice sends Bob the public key A = 5. Bob encrypts the message m and sends the pair of numbers (8,2) to Alice. Alice's secret key is a = 5. Using Elgamal public key decryption, Alice computes the plaintext message m from the ciphertext (8, 2). What is the number m that Alice obtains?
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