7) (i) You and Bob use Elgamal encryption with p=17 and g=3. You choose your private...
7) (i) You and Bob use Elgamal encryption with p=17 and g=3. You choose your private key a=4 and send A=-4 mod 17 to Bob (-4 is congruent to 3^4 mod 17), and Bob sends you (2,7). What is Bob's message? (ii) Alice and Bob use Elgamal encryption with p=13 and g=2. You noticed that Alice has sent A=11 mod 13 to Bob, and Bob has sent (5,7) to Alice. What is Bob's message?
Homework Answers
here we can use decryption
lgorithm or another way second one i am solving with decryption
alforithm
Add Answer to:
7) (i) You and Bob use Elgamal encryption with p=17 and g=3. You
choose your private...
Alice has a message M=51 to send to Bob securely using ElGamal encryption algorithm. Bob chooses...
Alice has a message M=51 to send to Bob securely using ElGamal encryption algorithm. Bob chooses p= 8167, g=4063, x=71. Alice chooses r=29. Show the encryption and decryption steps.
5. Alice wishes to send the message m4 to Bob using RSA encryption. She looks up Bob's public key...
5. Alice wishes to send the message m4 to Bob using RSA encryption. She looks up Bob's public key and finds that it is (n-55. c= 3 (a) Specify exactly what information Alice sends to Bob (b) What is Bob's private key? Show how he would use it to recover Alice's message (c) Explain why Bob should never use this choice of public key in real life.
5. Alice wishes to send the message m4 to Bob using RSA encryption....
Question 11 (1 point) Approximately how many different starting settings could be created from the Enigma...
Question 11 (1 point) Approximately how many different starting settings could be created from the Enigma machine's remarkably simple architecture. Question 11 options: 160 X 10 ^9 160 X 10^36 160 X 10^72 160 X 10^18 Question 12 (1 point) PGP uses a two-phase encryption approach to encrypt a message, and a second two-phase approach to decrypt a message. Alice wishes to send a message to Bob that will be confidential and also prove to Bob that Alice was the...
Need help!! please explain — crypto math thank you!! 7. Alice and Bob use the ElGamal public key cryptosystem with p 19, and a 3. Bob chooses the secret x = 4, What is β? Alice sends the cipher...
Need help!! please explain — crypto math
thank you!!
7. Alice and Bob use the ElGamal public key cryptosystem with p 19, and a 3. Bob chooses the secret x = 4, What is β? Alice sends the ciphertext (2.3). What is the message? 8. The points (3, +5) e on the elliptic curve y2-a3 2. Find another poin with rational coordinates on this curve. 9. For the elliptic curve y2--2 (mod 7), calculate (3,2)(5,5) 0. Let P (,0) be...
all infor given 4. Supppose Alice and Bob are using the prime p = 1451 and...
all
infor given
4. Supppose Alice and Bob are using the prime p = 1451 and the base g = 2 for an ElGamal cryptosystem. (a) Alice chooses a = 753 as her private key. What is the value of her public key A? (b) Now suppose Bob chooses b = 500 as his private key, and thus his public key is 464 mod 1451. Alice encrypts the message m = 284 using the ephemeral key k=512. What is the...
This question tests your knowledge of encryption and decryption using the RSA method. the numbers in...
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...
Question 2: You are Alice. Bob publishes his ElGamal public key (q, a, ya) = (101,...
Question 2: You are Alice. Bob publishes his ElGamal public key (q, a, ya) = (101, 2, 14). You desire to send the secret message “CALL ME” to Bob. Using the equivalence A = 01, B = 02, and so on up to Z = 26, you encode the message into the number 03 01 12 12 13 05. Regarding each of these two-digit numbers as a plaintext block, compute the message that you will send to Bob using his...
In ElGamal encryption scheme, assume that a prime modulus p = 451 and a generator g=288....
In ElGamal encryption scheme, assume that a prime modulus p = 451 and a generator g=288. If the private key is 23, what is the public key? Encrypt a message m=31 with a random value k=41 and decrypt the ciphertext.
Digital Signature (5-5): In the course notes we looked at RSA for encryption and signatures (using...
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?...
Question1: Alice and Bob use the Diffie–Hellman key exchange technique with a common prime q =...
Question1: Alice and Bob use the Diffie–Hellman key exchange technique with a common prime q = 1 5 7 and a primitive root a = 5. a. If Alice has a private key XA = 15, find her public key YA. b. If Bob has a private key XB = 27, find his public key YB. c. What is the shared secret key between Alice and Bob? Question2: Alice and Bob use the Diffie-Hellman key exchange technique with a common...
5. Alice wishes to send the message m4 to Bob using RSA encryption. She looks up Bob's public key and finds that it is (n-55. c= 3 (a) Specify exactly what information Alice sends to Bob (b) What is Bob's private key? Show how he would use it to recover Alice's message (c) Explain why Bob should never use this choice of public key in real life.
5. Alice wishes to send the message m4 to Bob using RSA encryption....
Need help!! please explain — crypto math
thank you!!
7. Alice and Bob use the ElGamal public key cryptosystem with p 19, and a 3. Bob chooses the secret x = 4, What is β? Alice sends the ciphertext (2.3). What is the message? 8. The points (3, +5) e on the elliptic curve y2-a3 2. Find another poin with rational coordinates on this curve. 9. For the elliptic curve y2--2 (mod 7), calculate (3,2)(5,5) 0. Let P (,0) be...
all
infor given
4. Supppose Alice and Bob are using the prime p = 1451 and the base g = 2 for an ElGamal cryptosystem. (a) Alice chooses a = 753 as her private key. What is the value of her public key A? (b) Now suppose Bob chooses b = 500 as his private key, and thus his public key is 464 mod 1451. Alice encrypts the message m = 284 using the ephemeral key k=512. What is the...
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...
Most questions answered within 3 hours.
-
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 4 minutes ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 4 minutes ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 10 minutes ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 18 minutes ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 13 minutes ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 14 minutes ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 18 minutes ago -
Would CuCO3 aqueous salt combined with calcium chloride
form a solid precipitate? If so, what would...
asked 16 minutes ago -
How do ECM Solutions assist in embedding a culture of continuous
improvement in an organization? (Project...
asked 37 minutes ago -
Directions
These directions introduce the idea of Essential Questions.
Since this may be a new concept...
asked 39 minutes ago -
1.b. Fiscal policy is said to suffer from ‘crowding out’.
Explain what this means and why...
asked 56 minutes ago -
The equation for the reaction of nitrogen and oxygen to form
nitrogen oxide is written as...
asked 1 hour ago