Abstract: A secure cloud storage and synchronization system and method is described that provides, among other things: (1) local password recovery, including a mechanism by which the user of the system can recover their password without having stored it on a remote server; (2) secure, private versioning of files, including a mechanism to privately store a version history of files on one or more remote servers in such a way that it is technically infeasible for anyone other than the legitimate owner to access any component of the file history; (3) secure, private de-duplication of files stored on one or more remote servers that reduces storage requirements by allowing for the storage of a single file when there are duplicates, even across users; and (4) secure, private sharing of files between users of the system that allows one user to share a file on the “cloud” with another user without deciphering or transporting the file.

Abstract: A secure cloud storage and synchronization system and method is described that provides, among other things: (1) local password recovery, including a mechanism by which the user of the system can recover their password without having stored it on a remote server; (2) secure, private versioning of files, including a mechanism to privately store a version history of files on one or more remote servers in such a way that it is technically infeasible for anyone other than the legitimate owner to access any component of the file history; (3) secure, private de-duplication of files stored on one or more remote servers that reduces storage requirements by allowing for the storage of a single file when there are duplicates, even across users; and (4) secure, private sharing of files between users of the system that allows one user to share a file on the “cloud” with another user without deciphering or transporting the file.

Abstract: A secure cloud storage and synchronization system and method is described that provides, among other things: (1) local password recovery, including a mechanism by which the user of the system can recover their password without having stored it on a remote server; (2) secure, private versioning of files, including a mechanism to privately store a version history of files on one or more remote servers in such a way that it is technically infeasible for anyone other than the legitimate owner to access any component of the file history; (3) secure, private de-duplication of files stored on one or more remote servers that reduces storage requirements by allowing for the storage of a single file when there are duplicates, even across users; and (4) secure, private sharing of files between users of the system that allows one user to share a file on the “cloud” with another user without deciphering or transporting the file.

Abstract: Methods and systems are provided herein that allow for a first device to remotely authenticate a particular software or hardware feature of a second device with which the first device is communicating. More specifically, the teachings herein allow for a server to verify that a particular application running on a client machine is an authentic application, as opposed to an application developed by a rogue element disguising itself as a authentic application. In a broader sense the teachings herein allow a server to initiate a sequence of instructions on the remote machine, and for which assurance is needed that the intended instructions were executed on the remote machine. Additionally methods and systems are provided that generate and update client registration certificates that are tightly bound to both client and server.

Abstract: A system and method is provided for using common communication devices to deliver educational lessons to students. The system is able to determine that an authorized student is attempting to access an educational program, and retrieves educational goals and progress information specific to that student. The student is able to access the education material from multiple devices, so the system determines which device the student is currently using, and adapts the educational lesson for the current device. Depending on the student's advancement through the lesson, the lesson is adapted to the students progress, and the educational goals are updated to reflect the student's performance. Also, the system may reward the student for successful progress, and may send reports to parents, teachers, or others involved in the student's education.