Question 1 V. = 225. 516 = 39 · 40 = 12 (mod 43)V2 = 313 = 12 (mod 43)TOthe integers V1 and V2:P AopenbaPROBLEMS 10.3forwarded to a user with public key (47, 5, 10) and private key k – 10(b) Indicate how the ciphertext can be decrypted using the recipient's privats e2. Suppose that the following ciphertext is received by a person having ElGamalndakey (71, 7, 32) and private key k = 30:%3D(56,45) (56, 38)(56, 05) (56, 27)(56, 29) (56, 03) (56,67)(56, 31) (56, 38) (56, 29)Obtain the plaintext message.3. The message NOT NOW (numerically 131419131422) is to be sent to a user of theEIGamal system who has public key (37, 2, 18) and private key k = 17. If the integerj used to construct the ciphertext is changed over successive four-digit blocks fromj = 13 to j = 28 to j = 11, what is the encrypted message produced?4. Assume that a person has ElGamal public key (2633, 3, 1138) and private key k = 960.If the person selects the random interger j = 583 to encrypt the message BEWARE OFTHEM, obtain the resulting ciphertext.[Hint: 3585 = 1424 (mod 2633), 1138583 = 97 (mod 2633).]%3D%3D11.%3D%3DThehel5. (a) A person with public key (31, 2, 22) and private key k = 17 wishes to signam e164%3Dthesignature, obtain the signature produced by the ElGamal algorithm.(b) Confirm the validity of this signature.entforschMiintmemecod

Here we solve it: ======================================= 1(a)

Answered: 1. The message forwarded to a user with…

1. The message forwarded to a user with public key (47, 5, 10) and private key k = 19 ptosystem and SI (b) Indicate how the ciphertext can be decrypted using the recipient's private ke

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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