Abstract: A system including a sending computer system, a re-encryption server, and a receiving computer system is described. The sending computer system can encrypt a plaintext message for a recipient on the receiving computer system. The encrypted message can be sent to the re-encryption server. The re-encryption server can change the encryption on the encrypted message, producing a re-encrypted message. The re-encrypted message can be sent to the receiving computer system and decrypted for presentation to the recipient.

Abstract: Embodiments of the invention include a set of rules established by a third-party to control the execution of various functions offered by a device. The set of rules can block a function outright, or can specify particular combinations of days and times when the function can be executed and when it is blocked. Then, when the user of the device requests an instance of the function to be executed, the set of rules can be accessed to determine whether the requested function instance is permitted, after which the device can either block or execute the requested function instance.

Abstract: When the user enters a word in a document, the word is parsed. If the word is misspelled, a static update list is checked to see if the misspelled word has an automatic correction. If the word is not in the static update list and the user corrects the misspelling, the misspelled word and the correction are both captured in a list. If the user corrects the misspelling a sufficient number of times, the static update list can itself be dynamically updated to recognize the correction regularly entered by the user.