Distributed key escrow system with password

The invention provides a distributed key escrow system with a password. The distributed key escrow system with the password comprises a user management module, a key sharing and recovering module and a key storage module, the user management module is connected with the key sharing and recovery module, and the key sharing and recovery module is connected with the key storage module. A user logs in a hosting system, divides a key into a plurality of key segments by using a key sharing function, and selects one or more key segments to be uploaded to a key storage module for hosting; if the user key is lost, the user can use the key recovery function after logging in the hosting system successfully, and the lost original key can be recovered by using the password and the plurality of key segments after requesting the previously stored key segments. Under the condition that the user has a key escrow demand, a set of safe user private key escrow scheme is provided for the user, and the ownership of the user to the