Password device management method and system

The invention provides a password device management method and system. The method comprises a user adding process, a user login process and a key management process. The user adding process comprises the steps that the user intelligent password key sends public key reading request information to the password device; after the password device receives the public key reading request information, public key information d_pub and private key information d_pri are generated, and the public key information d_pub is returned to the user intelligent password key; the user intelligent password key encrypts the device type, the device number and the public key information u_pub of the user intelligent password key through the public key information d_pub to generate a first ciphertext, and sends the first ciphertext to the password device; the password device decrypts the first ciphertext through the private key information d_pri, locally writes the device type and the device number of the user intelligent password key