Answer Posted / gtech
The Wide Mouth Frog protocol is a computer network
authentication protocol designed for use on insecure
networks (the Internet for example). It allows individuals
communicating over a network to prove their identity to each
other while also preventing eavesdropping or replay attacks,
and provides for detection of modification and the
prevention of unauthorized reading (cont)........
This can be proven using BAN logic.
The protocol can be specified as follows in security
protocol notation, where Alice is authenticating herself to
Bob using a server S:
A ightarrow S: A,{T_A, K_{AB}, B}_{K_{AS}}
S ightarrow B: {T_S, K_{AB}, A}_{K_{BS}}
Note that to prevent active attacks, some form of
authenticated encryption (or message authentication) must be
used.
The protocol has several problems:
* a global clock is required.
* the server has access to all keys.
* the value of the shared key between A and B is completely
determined by A.
* can replay messages within period when timestamp is valid.
* A is not assured that B exists.
* The protocol is stateful. This is usually undesired
because it requires more functionality and capability from
the server. For example, "S" must be able to deal with
situations in which "B" is unavailable.
------- :)---------
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Mention what does the clock rate do?
What is cam?
Value in which type of access list?
Name the command we give for see routing table?
Tell me which protocol called rapid protocol?
What are the steps of data encapsulation?
What is a switch and why we are using switches?
What’s the simplest way to remotely configure a router?
What is the difference between bus topology and hub?
Explain the benefits of VLANs.
Explain the difference between flsm and vlsm?
What is the difference between switch and hub?
Tell me when we use extended access-list?
What is topology in ccna?
Hi, Can any one please tell me the experience of their CCNA interview,and please tell me all the questions they asked in the interview. Many Thanks...
