Perform encryption and decryption using RSA algorithm for the following
P= 5; q = 11, M= 9; e = ?
Perform encryption and decryption using RSA algorithm for the following P= 5; q = 11, M=...
Perform encryption and decryption using the RSA algorithm, for the following p = 3, 9 = 11, e = 7 M = 5 What is the public key PU? What is the private key PR? What is the cipertext C? How does the decryption to covert the ciphertext back to the plaintext M?
After looking at the RSA algorithm for asymmetric key encryption and decryption. And after looking at Diffie-Hellman Exchange and at the Elgamal encryption scheme that can use the key derived from the exchange. State the justification for having this alternate mechanism when RSA is already well established. Consider the security and the computational aspects of the schemes. Be as specific as possible.
For the RSA encryption algorithm , do the following (a) Use p=257,q=337(n=pq=86609),b=(p-1)(q-1)=86016. Gcd(E,b)=1, choose E=17, find D, the number which has to be used for decryption, using Extended Euclidean Algorithm (b) One would like to send the simple message represented by 18537. What is the message which will be sent? (c) Decrypt this encrypted message to recover the original message.
How do you categorize the RSA Algorithm? Assuming p and q are given, write the pseudo code for encryption and decryption.
This question tests your knowledge of encryption and decryption using the RSA method. the numbers in soled are deliberately chosen to be mall enough to focus on gown understanding without excessive calculations. Alice and Bob decide to use an RSA cryptosystem with public key (77, 13) for communication. Alice wants to send Bob the message m = 22. Determine Alice's ciphertext c. Determine Bob's private boy Carry out Bob's decryption of Aloe's ciphertext c, and compare his result with Alice's...
Using RSA encryption with p=47, q=61, and e = 7, encrypt the following message in two-letter blocks: FAKE
Bob chooses 7 and 11 as p and q prime numbers. Now he chooses two exponents e to be 13, then d is 37. Note e * d mod 60 = 1 i.e. they are inverse to each other. Now imagine that Alice wants to send the plaintext 5 to Bob. She uses RSA algorithm to encrypt the message (perform encryption). Also, show your work how Bob perform decryption operation in order to extract plaintext. PLEASE SHOW ALL WORK AND...
Digital Signature (5-5): In the course notes we looked at RSA for encryption and signatures (using exactly the same mathematical formula), and ElGamal for encryption. There has been several questions on using ElGamal for signature. The ElGamal encryption algorithm cannot be used for signatures but there are signature schemes that is based on discrete logarithm. (a) Search for simple explanation of the ElGamal signature scheme and DSA signature scheme (Hint: Wikipedia). Can these algorithms be used to encrypt a message?...
p=3, q=7
Suppose that Bob wants to create an example of an RSA public-key cryptosystem by using the two primes p ??? and q ???. He chooses public encryption key e He was further supposed to compute the private decryption key d such that ed 1 mod A(pq)). However, he confuses A and and computes instead d' such that ed' =1 (mod P(pq)). (i) Prove that d' works as a decryption key, even though it is not necessarily the same...