Month: February 2021
CBC-MAC – Block Ciphers and Their Modes of Operation
14.4.3 CBC-MAC Looking closely at Figure 14.9 again, we can see that the last cipher block c3 depends on all plaintext blocks m1,m2,m3. Of course this is also true for an arbitrary number of plaintext blocks. Therefore, one can construct a message authentication code over some plaintext message m called the CBC-MAC by encrypting m…
Read More