guppore that Alice coryph the same plaintert to Bob and chanles who have theim RSA public keys w.e.) and (M.e,) mespactialy gedle,.es) -1. f you ane obsenving this communicatioo, explain how you can find my with an evesdrappen
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- Alice wants Bob (the Bank) to sign a cheque, c. She has Bob's public key e and modulus N, and chooses a random number r such that gcd(r,N) = 1. She computes re (mod N) and then multiplies the cheque, c, by this number (mod N) and sends the resulting message off to Bob to be signed. When she receives his reply, m, what should she do with it to produce the signed cheque? Select one: a. Divide the reply, m, by rd. b. Divide the reply, m, by r. c. Divide the reply, m, by re. d. Nothing - the reply is the signed chequeAlice wants Bob (the Bank) to sign a cheque, c. She has Bob's public key e and modulus N, and chooses a random number r such that gcd(r,N) = 1. She computes re (mod N) and then multiplies the cheque, c, by this number (mod N) and sends the resulting message off to Bob to be signed. When she receives his reply, m, what should she do with it to produce the signed cheque? Select one: a. Divide the reply, m, by rd. b. Divide the reply, m, by r. c. Divide the reply, m, by re. No - that won't do it. d. Nothing - the reply is the signed chequedont post exsitng one asnwer only 100% sure else strict complaitn skip if dont know
- 7) Find the esuts nsteps 8 << 98812 0 13 g ) By sing FORloopsand F crestamattx D, O=| 3 1 3 3 8 =1 PO ... AAlice and Bob has designed an RSA algorithm based on n = 152416431947009. Bob chooses the public key eB = 11. (a) Find the private key dB of Bob so that 0 < dB. Justify each step. (b) What should Alice do to send the message 123456789 to Bob? What message Bob receives? (c) What should Bob do to decrypt the message he receives from Alice? Please solve all partA.Given p=25, q=9, and e=7, generate the public key (n,e) and the private key (n,d) using the RSA Key generation algorithm. (Use Excel for computations) b. Given Bob's public key of (85, 7) and private key of (85, 55), show how Alice can encrypt m=3 to send to Bob. Show the ciphertext. c. Given Bob's public key of (85, 7) and private key of (85, 55), show how Bob can decrypt the ciphertext y=2 received from Alice. Show the plaintext. d. Using the fast exponentiation method, determine 530 mod 47. Show your work.
- alice wants to send to all her friends, including bob, the message "SELLEVERYTHING" so that be knows that she sent it. What should she send to her friends, assuming she signs the message using the RSA cryptosystem.PLEASE PLEASE SHOW CALCULATIONS Using the Vigenere cipher given in class: ADQYS MIUSB OXKKT MIBHK IZOOO EQOOG IFBAG KAUMFVVTAA CIDTW MOCIO EQOOG BMBFV ZGGWP CIEKQ HSNEWVECNE DLAAV RWKXS VNSVP HCEUT QOIOF MEGJS WTPCHAJMOC HIUIX Determine the Keys that would be needed to decipher the given cipher given the following deductions made in class Key of length 6; alphabet 1: AIKHOIATTOBGEEERNEOSAI alphabet 2: DUKKEFUAWEMGKWDWSUFWJU alphabet 3: QSTIQBMAMQBWQVLKVTMTMI alphabet 4: YBMZOAFCOOFPHEAXPQEPOX alphabet 5: SOIOOGVICOVCSVASHOGCC alphabet 6: MXBOGKVDIGZINNVVCIJHHaskk it
- dont answer without knwoledge answer only 100% sureSuppose you generate the following RSA key pairs: • p = 37199• q = 49031• N = p · q = 1823904169• (p − 1) · (q − 1) = 1823817940• e = 65537 (for encryption)• d = 1578812933 (for decrption)Assuming a=01, b=02, . . . , z=26, and we group the digits in groups of three. (i) If someone wants to send the following message: “SELLALL” using your public key, what strings of digits should they send you (i.e., encrypt this message)?4. What path would algorithm A, using f(n) = g(n) + h2(n) heuristic as shown in the table above, return as a solution path for this search problem?