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Advances, Systems and Applications

Table 1 Important notations

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,  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