Suppose your RSA public key is PK: {n, e} = {13861, 37}. Your friend sends you a ciphertext C = 9908. But unfortunately you have forgotten your private key, now you have to crack it yourself. a) Write down a possible condition of factors p and q. p= q= b) What is your private key SK: {d}? d= c) What is the plaintext of your friend’s message? The plaintext M = d) Suppose the plaintext M is a 12-digit number consisting of a prefix “19” and 1234567890. What is the corresponding ciphertext? Since M is greater than n, you only need to encrypt four digits at a time. Ignore redundant zeros. e.g., 0001 = 1. The result should contain three integers. The ciphertext C0 =

Q: Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a=6. Let Bob's…

A: Key generation Common prime q=131 primary root  = 6 Bob's public key  =3 Random integer chosen k= 4…

Q: Alice and Bob use the ElGamal scheme with a common prime q=131 and a primitive root a=6. Let Bob's…

A: Given, YB=3, q=131, a= 6, k=4, M= 9 The formulas use are : C1=ak mod qC2 = KM mod qK = YBk mod q

Q: Network Security problem Q1] Consider the RSA encryption algorithm. Suppose that a malicious user…

A: We are given Ciphertext C and PUa ={5, 35} Public key in general is represented as {e, n} So, {e,n}=…

Q: - A password is 6 characters in length, and there 17 different characters from which we can select.…

A: Given:

Q: 2. Let (M, C, e, d, K) denote the simple substitution cryptosystem with Σ = {0, 1, 2, 3, 4), M = C =…

A: a) To compute C=e(240014,k) 2+k mod 5=0 ⇒2+3 mod 5=0 4+k mod 5=1 ⇒4+2 mod 5=1 0+k mod 5=4 ⇒0+4 mod…

Q: 7. The following ciphertext 261 163 196 172 217 172 89 142 76 217 209 172 ? was produced using the…

A: Note  As per our guidelines, we are supposed to answer only one question. Kindly repost other…

Q: 8

A: Answering first question as per guidelines

Q: Alice has used Bob's public key (n=93542543, e =9341) to produce a ciphertext C = 72645824 using RSA…

A: RSA Algorithm is developed by Ravist, Shamir, and Adleman. It is Public key encryption asymmetric…

Q: Alice and Bob are strangers. Alice wants Bob to send her a private message A and be able to verify…

A: The answer is given below for the above given question:

Q: A password is 4 characters in length,

A: Given condition: We need to choose among:

Q: Alice and Bob use the ElGamal scheme with a common prime q=131 and a primitive root a=6. Let Bob's…

A: Key generation Common prime q=131 primary root  = 6 Bob's public key  =3 Random integer chosen k= 4…

Q: Suppose the parameters for an instance of the RSA cryptosystem are N = 17363, e = 5, and d= 10253.…

A: Please refer to the following step for the complete solution of the problem above.

Q: Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a = 6. Let…

A: Below is the answer to above question. I hope this will meet your requirement...

Q: How would you solve part a and b? This is an applied cryptography type question. a. Suppose ' = 2,…

A: Answer is given below-

Q: Alice and Bob use the ElGamal scheme with a common prime q=131 and a primitive root a=6. Let Bob's…

A: Your answer is given below: