Identity authentication device and intelligent terminal

The invention discloses an identity authentication device. The device comprises a receiving module, a biological feature collection module, a biological feature identification module, a security chip and a sending module, wherein the receiving module is used for receiving an identity authentication instruction input by a user; the biological feature collection module is used for collecting current biological feature data of the user; the biological feature identification module is used for matching the current biological feature data with pre-registered authentication biological feature data; the security chip is used for generating dynamic user identifier data through pre-stored security secret key data and user data when the current biological feature data and the authentication biological feature data are matched successfully; and the sending module is used for sending the generated dynamic user identifier data for identity authentication. According to the device, the effective identity of the user can be