The device may receive user information associated with a user. The device may generate a user profile for the user that stores user information and authentication confirmation information. The device may provide a particular cryptographic key and information identifying the user profile. The device may receive a request to authenticate a secure session for a user device from an application server. The device may obtain, based on the user identifier, the authentication confirmation information associated with the user from a data structure storing one or more user profiles. The device may validate the particular response to the particular challenge code based on the authentication confirmation information. The device may provide information to the application server indicating that the secure session is validated for the user device based on validating the authentication information.