Patent ID: 6178506
Filing Date: 2001-01-23
Classification: H04L,H04W

Abstract:
A method for registering a wireless subscription to a wireless terminal, the method comprising the steps of:a) entering a user identifier) and a password) into the wireless terminal;b) at the wireless terminal:i) generating a public/private key pair;ii) using the password to encrypt the wireless terminal's public key according to a secure key exchange (SKE) protocol, thereby forming a first SKE message; andiii) transmitting the user identifier and the first SKE message to a home system;c) at the home system:i) generating a public/private key pair;ii) using the user identifier to determine the password;iii) using the password to encrypt the home system's public key according to an SKE protocol, thereby forming a second SKE message;iv) transmitting the second SKE message to the wireless terminal;v) using the password to decrypt the wireless terminal's public key; andvi) using the home system's private key and the wireless terminal's public key to form a session key;d) at the wireless terminal:i) using the password to decrypt the home system's public key; andii) using the wireless terminal's private key and the home system's public key to form the session key; ande) at both the wireless terminal and at the home system, using the session key to download all or part of a Virtual User Identification Module (VUIM) from the home system to the wireless terminal.