18. The non-transitory computer readable storage medium according to claim 17 , wherein the step of verifying the boundary smoothness between the voice segment part and the answer to a dynamic question part within the voice answer comprises: determining the smoothness based on at least one of: energy, pitch, and spectrum.
17. A non-transitory computer readable storage medium tangibly embodying a computer readable program code having computer readable instructions which, when implemented, cause a computer device to carry out the steps of a method for authenticating a user, the method comprising: transmitting to the user a question prompt requiring the user to speak out a voice segment part and an answer to a dynamic question part, wherein the voice segment part has a corresponding text dependent speaker verification model enrolled before an authentication, and wherein the question prompt requires the user to speak out the voice segment part and the answer to a dynamic question part in a preset order; segmenting, in response to receiving a voice answer, the voice segment part and the answer to a dynamic question part out from the voice answer; and verifying a boundary smoothness between the voice segment part and the answer to a dynamic question part within the voice answer.