Tagged Questions
-2
votes
0answers
54 views
What is a CBC Mac Scheme? How does knowing one block release other? [closed]
I guess CBC-MAC encryption relies on the previous block for encryption but how does knowing intermediate block cipher output make it insecure?
-3
votes
0answers
86 views
Why is the basic (fixed-length) CBC MAC construction not a secure MAC when it is used on variable-sized messages? [closed]
Why is the basic (fi xed-length) CBC MAC construction not a secure MAC when it is used on variable-sized messages?
2
votes
2answers
235 views
Modifications of CBC-MAC
I'm preparing myself to exam, but I have a lot of troubles with rigorous proofs. This post is very long, but this is because I remind here 2 long definitions.
At the beginning I want to remind the ...
