Security authentication method based on secure computer

The invention relates to the technical field of computer identity recognition, and particularly discloses a security authentication method based on a secure computer, which comprises the following steps: providing an initial voice sample by a user through voice acquisition equipment, analyzing and processing the acquired initial voice sample by the secure computer, extracting a voiceprint vector of the user, and sending the voiceprint vector to the user; the method comprises the following steps: acquiring a current voice sample of a user, storing the current voice sample and identity information of the user in a secure storage unit, when the user needs identity authentication, providing the current voice sample by the user through voice acquisition equipment again, processing and analyzing the current voice sample by a secure computer, extracting a voiceprint vector corresponding to the current voice sample, and sending the voiceprint vector to the user; and the voiceprint vector is compared with the user voi