Parameter |
Usage |
Parameter |
Usage |

K |
The order of G_{1} and G_{2} |
K_{pub,o} |
The O’s public key |

G_{1} |
The cyclic group with operation
“+” |
H_{1} |
The hash function
used to derive one’s
ID to its public key |

G_{2} |
The cyclic group with operation
“×” |
H_{2} |
The hash function
used to derive the
output of the Bilinear
Pairing function ê to a
symmetric key |

ê |
The Bilinear Pairing function |
H_{3} |
The hash function
used to generate the
electronic means |