The invention discloses a method of implementing high speed data packet operation authentication, the method includes: user terminal establishing physical connection with access network takes user information saved in user identify module as user identity, starts to authenticate with the authentication entity based on the user identify module; according to said user identity, authentication entity gets the second random data and the second authentication value related to the second random data computed by share secret data; said user terminal computes the first authentication value based on the second random data and share secret data saved itself, authentication entity compares the first authentication value with the second authentication value, if equal, the authentication is succeed, if not equal, the authentication is failing. The method is that authentication is security, cost is lower, operation is conveniency. |