The invention provides a multi-mode unified identity
authentication method based on an OAuth2.0 technology, and the method comprises the steps: constructing a unified organization and
user management system based on an OAuth2.0 protocol, and enabling the organization and
user management system to integrate a unified account,
authorization,
authentication, application and audit management module; single sign-on, security access and
centralized management and control are provided for an application
system according to a plurality of preset
authentication and
authorization modes, wherein the preset authentication and
authorization modes comprise an authorization code mode, an implicit mode, a
password mode and a
client mode. The system and the method have the beneficial effects that through a centralized
digital identity management, authentication, authorization, monitoring and auditing platform, a legal user is ensured to access a
trusted system and equipment with proper authority, and real-time early warning and effective prevention are performed on abnormal access behaviors, so that all-around
security service and support are provided for an application system and related personnel; and the
workload of system operation and maintenance is reduced while the user experience is improved.