Cross-platform identity authentication system and method based on human-computer interaction behaviors

The invention discloses a cross-platform identity authentication system and method based on human-computer interaction behaviors. The cross-platform identify authentication method comprises the following steps that (1) a user enters a behavior authentication system, wherein the behavior authentication system judges whether the user is a new user, and if so, a step (2) is carried out for registration, and if the user is a registered user, a step (3) is carried out for cross-platform detection; (2) the new user carries out registration; (3) cross-platform detection is carried out, and if the user crosses platforms, a step (5) is carried out for cross-platform identity authentication; (4) single-platform identity authentication is carried out; (5) cross-platform identity authentication is carried out, a cross-platform feature library of the user is updated, and a single-platform identity authentication model is established. Under an existing internet environment, the user can often access the same network account by using different terminal equipment, and the accuracy of a traditional identity authentication technology based on the human-computer interaction behaviors is greatly reduced by different hardware environments. The problems can be effectively solved by the cross-platform authentication method based on a cross-platform identity verification model.