question 4

It message is used to generate a 128-bit hash. One the average, how many other messages plel J recovered? (Please show your work.) could be expected to generate the same hash value? Since your answer should be a very,very large number, how do you justify the uses of the hash function? (i.e. Can hash value be easily replicated?) The following ciphertext is a monoalphabetic ciper: 4. ROXBOOG TOSOXUXUVG WGP NVTMOXXUGM, UX UE W HWTCo XLWX W GOB XLVDMLX OCOT EXTDMMIOE UGXV OAUEXOGOO. HWEVG QVVIOZ Decrypt this message, and briefly describe your cryptanalysis methodology. In particular , list features of the ciphertext that hindered or helped your decryption process. An organization has 300 members. It is desired that each member of the organization be able tu communicate securely with any other member, without any other member being able to decryp their messages. How many unique keys are required if: The organization uses a symmetric cipher. The organization uses an asymmetric cipher. a. b. has be cme Ins, is developing the next generation financial tracking program, and Alice hioh will encrypt each user's data in a fil