Abstract: Various embodiments of the present technology involve creating a secure unique identifier for a content item to be used in a synchronized content management system while off-line with the synchronized content management system. In some embodiments, securing the unique identifier involves generating a random key and applying a hash function to an input to generate a hash. The synchronized content management system can require a user to send both the secure identifier and the key to the content management system in order to register the content item with the content management system. Accordingly, a malicious user who only has access to the secure identifier cannot use it to identify the key. This prevents a malicious user who has obtained the secure identifier, but does not have access to the key from registering a malicious document using the original user's secure identifier.

Abstract: Various embodiments of the present technology involve creating a secure unique identifier for a content item to be used in a synchronized content management system while off-line with the synchronized content management system. In some embodiments, securing the unique identifier involves generating a random key and applying a hash function to an input to generate a hash. The synchronized content management system can require a user to send both the secure identifier and the key to the content management system in order to register the content item with the content management system. Accordingly, a malicious user who only has access to the secure identifier cannot use it to identify the key. This prevents a malicious user who has obtained the secure identifier, but does not have access to the key from registering a malicious document using the original user's secure identifier.

Abstract: Various embodiments of the present technology involve creating a secure unique identifier for a content item to be used in a synchronized content management system while off-line with the synchronized content management system. In some embodiments, securing the unique identifier involves generating a random key and applying a hash function to an input to generate a hash. The synchronized content management system can require a user to send both the secure identifier and the key to the content management system in order to register the content item with the content management system. Accordingly, a malicious user who only has access to the secure identifier cannot use it to identify the key. This prevents a malicious user who has obtained the secure identifier, but does not have access to the key from registering a malicious document using the original user's secure identifier.

Abstract: Various embodiments of the present technology involve creating a secure unique identifier for a content item to be used in a synchronized content management system while off-line with the synchronized content management system. In some embodiments, securing the unique identifier involves generating a random key and applying a hash function to an input to generate a hash. The synchronized content management system can require a user to send both the secure identifier and the key to the content management system in order to register the content item with the content management system. Accordingly, a malicious user who only has access to the secure identifier cannot use it to identify the key. This prevents a malicious user who has obtained the secure identifier, but does not have access to the key from registering a malicious document using the original user's secure identifier.

Abstract: A content management system defines a synchronization application programming interface (API) used by applications executing on client devices to synchronize content items after the content items are changed. Functions of the API specify changes to the content items in terms of semantically-meaningful locations within the content items, rather than physical file locations. The content management system can represent the state of a content item in terms of change descriptors that reference the semantic locations of the API. The content management system can then distribute the change descriptors to the client devices, which refer to the semantic locations of the change descriptors when determining how to reconcile changes made by other client devices.

Abstract: A content management system defines a synchronization application programming interface (API) used by applications executing on client devices to synchronize content items after the content items are changed. Functions of the API specify changes to the content items in terms of semantically-meaningful locations within the content items, rather than physical file locations. The content management system can represent the state of a content item in terms of change descriptors that reference the semantic locations of the API. The content management system can then distribute the change descriptors to the client devices, which refer to the semantic locations of the change descriptors when determining how to reconcile changes made by other client devices.

Abstract: A method for use in a distributed system for processing a knowbot program that has the ability to move from node to node in the distributed system. In the method, an operating environment in each of the nodes provides service facilities useful to the knowbot program. And,.in the operating environment, a supervisor process is run that enables the knowbot program to make use of the service facilities but does not permit direct access by the knowbot program to facilities of the operating environment.