Suppose we use the ElGamal signature scheme with p = 65539, ?=2,?=33384. We send signed messages...

Suppose we use the ElGamal signature scheme with p = 65539, ?=2,?=33384. We send signed messages (m, r, s): (809, 18357, 1042) = hi and (22505, 18357, 26272) = bye. (a). Show that the same value of k was used for each signature. (b). Use this fact to find this value of k and to find the value of “a” such that ?≡?? (??? ?).

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Colby Messinger answered 2 years ago

Suppose we use the ElGamal signature scheme with p = 65539, ? = 2, ? =...

Suppose we use the ElGamal signature scheme with p = 65539, ? = 2, ? = 33384. We send signed messages (m, r, s): (809, 18357, 1042) = hi and (22505, 18357, 26272) = bye. (a). Show that the same value of k was used for each signature. (b). Use this fact to find this value of k and to find the value of “a” such that ? ≡ ?? (??? ?).

Suppose we use the ElGamal signature scheme with p = 65539, ? = 2, ? =...

Suppose we use the ElGamal signature scheme with p = 65539, ? = 2, ? = 33384. We send signed messages (m, r, s): (809, 18357, 1042) = hi and (22505, 18357, 26272) = bye. (a). Show that the same value of k was used for each signature. (b). Use this fact to find this value of k and to find the value of “a” such that ? ≡ ?? (??? ?).

How do we encrypt? Explain modern symmetric cryptography. Explain the digital signature scheme. Explain the cryptography...

How do we encrypt? Explain modern symmetric cryptography. Explain the digital signature scheme. Explain the cryptography tools. What is digital signature? What is steganography? Explain the protocol for secure communications.

RSA: Alice wishes to send Bob the message POET. Suppose Bob chooses P = 29, Q...

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A. Use truth tables to verify these equivalences 1. p∨p ≡ p 2. p∧p ≡ p...

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Suppose we use the ElGamal signature scheme with p = 65539, ?=2,?=33384. We send signed messages...

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