| Security Protocol Notation |
Article Index for Security |
Shopping Protocol |
Website Links For Security |
Information AboutSecurity Protocol Notation |
| CATEGORIES ABOUT SECURITY PROTOCOL NOTATION | |
| cryptographic protocols | |
|
The standard notation consists of a set of individuals (traditionally named Alice, Bob , Charlie and so on) who wish to communicate. They may have access to a server S, shared keys K, timestamps T, and can generate Nonce s N for authentication purposes. A simple example might be the following: : This states that Alice intends a message for '''B'''ob consisting of a plain text '''''' encrypted under shared key '''KAB'''. Another example might be the following: : This states that Bob intends a message for '''A'''lice consisting of a '''N'''once encrypted using public key of Alice. A key with two subscripts is a Symmetric Key shared by the two corresponding individuals. A key with one subscript is the public key of the corresponding individual. A private key is represented as the inverse of the public key. The notation specifies only the operation and not its semantics - for instance, public key encryption and signature are represented identically. We can express more complicated protocols in such a fashion, see Kerberos as an example. |
|
|