equal
deleted
inserted
replaced
55 Write down three facts that $A$ can infer after this protocol has been |
55 Write down three facts that $A$ can infer after this protocol has been |
56 successfully completed? |
56 successfully completed? |
57 |
57 |
58 \item Write down a protocol which establishes a secret key |
58 \item Write down a protocol which establishes a secret key |
59 between $A$ and $B$ using a mutually trusted third party $S$. |
59 between $A$ and $B$ using a mutually trusted third party $S$. |
60 You can assume $A$ and $S$, respectfully $B$ and $S$, share |
60 You can assume $A$ and $S$, respectively $B$ and $S$, share |
61 secret keys. |
61 secret keys. |
62 |
62 |
63 \item Consider the following protocol between a car and a |
63 \item Consider the following protocol between a car and a |
64 key transponder: |
64 key transponder: |
65 |
65 |