(Elgamal encryption): given elgamal encryption ciphersystem: a)show how can we create a new legal encryption from...

(Elgamal encryption): given elgamal encryption ciphersystem:

a)show how can we create a new legal encryption from two different encryptions that we don't know their decryptions

b)how can an adversary take advantage of the scheme at a) (what's written above), in order to attack a preknown encrypted text? elaborate

Expert Solution

Colby Messinger answered 2 years ago

(ElGamal encryption): show how, given an encrypted message C1=E(m), it is possible to create a different...

(ElGamal encryption): show how, given an encrypted message C1=E(m), it is possible to create a different encrypted copy that will be decrypted to the same message without knowing the key that was used for the encryption. meaning, create C2 so that D(C2)=m

How do banks create money? Show the steps that go from some new cash to many...

How do banks create money? Show the steps that go from some new cash to many more deposits. What limits the ability of the bank money creation process?

How we can define legal conflicts of business with its competitors and contracters ? Give some...

How we can define legal conflicts of business with its competitors and contracters ? Give some quotes/ quotations from experts/ law also.

Given your understanding of the legal aspects of American business, how does it differ from that...

Given your understanding of the legal aspects of American business, how does it differ from that of your home countries? Do you understand why legal advice is required more in the United States? Why do you think it is important for your business to keep accurate records? What does your business intend to do to ensure accurate record keeping?

Background: You can create a simple form of encryption using the xor Boolean operator. For example,...

Background: You can create a simple form of encryption using the xor Boolean operator. For example, if you want to encrypt the letter 'A': Choose another letter as a "key", say 'X' Encrypt 'A' with the xor function: encrypted = 'A' xor 'X' Now you can decrypt by xor'ing your encrypted value with 'X' again: decrypted = encrypted xor 'X' Your task: Write a C++ program that meets the following requirements: Asks the user for the name of an input...

1. Strong arguments can be given as to why encryption tools are needed to safeguard communications...

1. Strong arguments can be given as to why encryption tools are needed to safeguard communications in cyberspace, yet these tools can be used by terrorists and criminals to protect their communications in cyberspace. (a) In the wake of September 11, can a case be made for not allowing ordinary users to employ strong encryption tools in Internet communications? (b) Can we still claim to live in a free society if plans for government interception of email communications, as provided...

Can you show me how to do this step by step? We are not allowed to...

Can you show me how to do this step by step? We are not allowed to use excel. Everything has to be done by hand or with a financial calculator You are scheduled to receive annual payments of $10,000 for each of the next 25 years. Your discount rate is 8.5%. What is the difference in the present value if you receive these payments at the beginning of each year rather than at the end of each year

how can we determin the violation of NAAQS of a spesific data given ?

(Java) Create a new linked list from two given arrays with the greater element from each...

(Java) Create a new linked list from two given arrays with the greater element from each corresponding array element placed into the linked list. Given two arrays of varying size initialized with integers of varying values, the task is to create a new linked list using those arrays. The condition is that the greater element value from each corresponding array element will be added to the new linked list in the list position that maintains the integers in ascending order....

Given the following information, show how you can arbitrage and compute your profit, if you can...

Given the following information, show how you can arbitrage and compute your profit, if you can borrow 200 million dollars or euros equivalent for three months. Show your profit in both dollars and euros Spot rate ($/€) 1.255 3-month forward rate ($/€) 1.213 3-month U.S. dollar interest rate 2.0% 3-month euro interest rate 1.6%

Question