A new escrow mechanism for personal security keys on IBE was proposed.This mechanism constructed a security trust system composed of private key generator

key management center

and user security component to set up a personal security key escrow model

thus providing identity validation

confidentiality and integrality check for the application

backup

recovery

and renewal of the escrowed keys.The mechanism

taking advantage of the IBE

simplified the process of authentication and encryption

mede it possible for users to complete independently the escrow of personal security keys.Therefore

it is more practical than traditional key escrow schemes.