Abstract: Techniques to facilitate user authentication on a mobile device executed on the client side are provided. An embodiment includes a subscriber identity module device, comprising at least one memory to store computer executable components and user information representing a user identity associated with a device with a subscriber identity module interface with which the subscriber identity module device is configured to be employed. The computer executable components comprise a local server component configured to, as facilitated by a processor of the device communicatively coupled to the at least one memory, at least receive a hypertext transfer protocol request message for the user information from an application of the device over a local area network, and provide the user information to the application over the local area network using the hypertext transfer protocol in response to receipt of the hypertext transfer protocol request message.

Abstract: Technologies are generally described for security algorithm methods in issuing, managing, and using digital certificates in online transactions. Certificate holders can be identified based on the device ID from the equipment they are using to access online services. The equipment can be previously linked to an identity known by the equipment service provider. A consumer can then authorize the using of the digital certificate associated with their device in online transactions. Third parties can then trust the identity behind the digital certificates and accept their use in identifying a private party and performing a transaction with that party.