Is it possible to recover a private key, given a public key and a substring/a part of the corresponding private key?
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Is it possible to recover a private key, given a public key and a substring/a part...
Alice has the RSA public key (n, e) = (11413, 251) and private key d = 1651. And Bob also has his own RSA public key (n’, e’) = (20413, 2221) and private key d’ = 6661. Alice wants to send the message 1314 to Bob with both authentication and non-repudiation. Use Maple, calculate what is the ciphertext sent by Alice. And Verify that Bob is able to recover the original plaintext 1314.
1. Create an RSA private key 2. Output the key in a text format so that it shows the following: modulus public exponent (e) private exponent (d) the primes (p and q) Send me a file called key.txt with this information. 3. Using openssl's rsautl option encrypt this message to me: "NAME" using the public key that's embedded with the private key above. Attach a file named encrypted.txt that contains the encrypted message. Hint: Copy the text above and put...
4. Suppose Alec wishes to communicate with Diego, who is using RSA with a public key (e, n) and corresponding private key d. Alec takes his message m and sends c m mod n to Diego. Unfortunately, Eve is able to intercept Alec's message, modifying it to instead send d'c() mod n for some (secret) r that Eve chooses. (a) Diego receives Alec's tampered ciphertext d' and tries to decrypt it using his private key d. What is the resulting...
Generate private and public key. Sign the word GOLF by using blocks of the size of two symbols. Check signature with public key. Provide solution and explanation.
I'm building an application that needs to store a public/private key pair generated by the user. What's the best way to do this? Encrypt the private key in the db with some application-generated secret? Encrypt the private key with some user-specific secret?
QUESTION 5 Assume Alice's public key is 3,33>, and her private key is 7,33>. She wants create a digital signature for a message m. The hash of the message is 19. What is the digital signature?
Write a message in a text file, encrypt it, and make a public or private key to be sent for someone. Use GPG to encrypt a message in a text file. create a unique encryption key, and then use that key to encrypt your file.
Research the following: Symmetric key vs. Asymmetric key Public vs. Private Pre-shared key? Answer: Which one do you believe is more secure? and why. Are they equally secure? if not explain.
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....
just need help with part c key and public key cryptography methods 2. (a) Explain the difference between the symmetric (b) In the famou s RSA algorithm for public key cryptography, very large prime numbers are used so as to make ult for the attackers to find from their product the prime factors. However, for an illustration of the ideas behind the RSA algorithm, you could chooses two small prime numbers 7 and 11, and a public key e 13...