U.S. Patent Number: 10,305,683
Patent Title: System and method of applying multiple adaptive privacy control layers to multi-channel bitstream data
Issue Date: May 28, 2019
Inventors: Ghafourifar, et al.
Assignee: Entefy Inc.
Patent Abstract
Disclosed are systems to apply customized permission settings to protect particular portions of a document, and, in particular, documents that are of bitstream datatypes containing multiple channels of audio, encoded or not encoded. The custom access permission settings may be implemented by obfuscating the protected portions of the original bitstream and then embedding “secret,” e.g., hidden and/or encrypted, versions of the obfuscated portions in parts of the data structure of the original file, e.g., in the form of “layers” that are held within audio stream containers such as channels. The content of the individual encrypted audio stream containers may then be decrypted according to each recipient’s permissions and layered on top of the obfuscated portions of the encoded media file before being rendered to the recipient.
USPTO Technical Field
This disclosure relates generally to systems, methods, and computer readable media for concealing information within encoded media files which may be distributed over a network and playable by recipients in a wide array of standardized software applications. More particularly, this disclosure is relates to Adaptive Privacy Controls for concealing information within audio files and audio bitstreams. Access permission settings for such audio files may be implemented by embedding one or more “secret,” e.g., hidden and/or encrypted, information portions in such encoded media file types, e.g., in the form of layers of audio information.
Background
The proliferation of personal computing devices in recent years, especially mobile personal computing devices, combined with a growth in the number of widely-used communications formats (e.g., text, voice, video, image) and protocols (e.g., SMTP, IMAP/POP, SMS/MMS, XMPP, etc.) has led to increased concerns regarding the safety and security of documents and messages that are sent over networks. Users desire a system that provides for the setting of custom, e.g., user-defined, access permissions for all or part of a file, including audio files that may or may not have been encoded using compression techniques.
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