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System and method of applying multiple adaptive privacy control layers to single-layered media file types
System and method of applying multiple adaptive privacy control layers to single-layered media file types
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机译:将多个自适应隐私控制层应用于单层媒体文件类型的系统和方法
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摘要
Users desire a communications system that allows the users to apply customized privacy settings (and, optionally, encryption keys) differently to particular portions of a document—even if the document is of a ‘lossy’ file type, e.g., a JPEG image. The custom access permission settings may be implemented by obfuscating portions of the original file and then embedding “secret,” e.g., hidden and/or encrypted, versions of the obfuscated portions in parts of the data structure of the original lossy file in the form of “layers” (e.g., the bit-equivalent of PNG layers). The individual encrypted layers may then be decrypted according to each recipient's permissions and layered on top of the original lossy file ‘in memory’ before being displayed to the recipient. The use of multiple encrypted layers allows for the visual revelation of the content of the original lossy file without modifying the actual underlying image content of the original lossy file.
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