Advances, Systems and Applications
From: An efficient and secure data sharing scheme for mobile devices in cloud computing
Notation | Meaning |
---|---|
λ | Security parameter |
A | Attribute universe |
\( {\mathbbm{G}}_1,{\mathbbm{G}}_2 \) | Multiplicative groups |
q | Prime order of group |
sigg | Algebra signature |
PK, Â MK | Public and master keys |
S | Attribute of DR |
SK | Private key of DR |
F, F′ | Plain text of file and encrypted file |
Ti | Block tag |
DP, TP | Data proof and tag proof |
AS | Access policy |
mi | Data block |
Uid | Identity of user |
Usk, Upk | Private and public key of user |