Table 2.
Notations of symbols in DA
4FL.
| Symbols | Notations | Symbols | Notations |
|---|---|---|---|
| KGC | Key generation center |
|
Hash function |
 , 
|
ith user and jth task publisher |
 , 
|
Public key of ith user and jth task publisher |
 ,  , 
|
Private key of ith user, jth task publisher and KGC |
 , 
|
Public dynamic value of ith user and jth task publisher |
 , 
|
Secret dynamic value of ith user and jth task publisher |
 , 
|
Pseudo identity of ith user and jth task publisher |
 , 
|
Secret value pair for 
|
 , 
|
Secret value pair for 
|
| TS | Time stamp |
|
Maximum time to discard a request |
| MSK | Master Secret key of KGC | SK | Session key of ith user and jth task publisher |
 , 
|
Identity of ith user and jth task publisher |
|
Public key of KGC |