Task 6 Investigate the KRACK attack on the WPA2 protocol for wireless networks. How serious is the weakness? What can users and developers do about it? Task 7 Explain how the RSA (Rivest-Shamir-Adleman) cryptosystem works. Your essay must include the following terms: public key, private key, symmetric key, key generation, key distribution, prime number, factoring problem. Especially explain how the encryption process works, and how the decryption process works. Task 8 Explain the PGP architecture. Include one or more examples of where and how it is used. Task 9 What is a digital signature? Does it have anything to do with PGP and RSA? If so, why and how? Or does RSA and/or PGP have something to do with digital signatures