Emc IP Holding Company LLC

Emc Corporation

Yongjian Feng

Christopher Hebert

Howard Lu

Jean-Claude Paul

Generating a modified protected file is disclosed, including: renaming a primary content object of a protected file; and creating a modified protected file based at least in part by inserting into the protected file a replacement object for the renamed primary content object. Using the modified protected file is disclosed, including: determining that a file includes a renamed primary content object; and redirecting a data access operation to the renamed primary content object.

Generation and use of a modified protected file

Generating a modified protected file is disclosed, including: creating a modified protected file at least in part by embedding a protected file into an at least partially unprotected file; and modifying a set of content type information included in the at least partially unprotected file to include a content type associated with the protected file as embedded. Using the modified protected file is disclosed, including: receiving, using a processor, a data access operation to an at least partially unprotected file; determining that the at least partially unprotected file includes a portion associated with a content type associated with embedded protected content; and redirecting the data access operation to the portion of the at least partially unprotected file associated with the content type associated with embedded protected content.

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Newton, MA, United States of America

Yongjian Feng