{"id":164920,"date":"2005-01-01T00:00:00","date_gmt":"2005-01-01T00:00:00","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/msr-research-item\/jpeg-2000-encryption-enabling-fine-granularity-scalability-without-decryption\/"},"modified":"2018-10-16T21:15:15","modified_gmt":"2018-10-17T04:15:15","slug":"jpeg-2000-encryption-enabling-fine-granularity-scalability-without-decryption","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/jpeg-2000-encryption-enabling-fine-granularity-scalability-without-decryption\/","title":{"rendered":"JPEG 2000 Encryption Enabling Fine Granularity Scalability without Decryption"},"content":{"rendered":"<div class=\"asset-content\">\n<p>In this paper, we propose a novel encryption scheme for JPEG 2000 (J2K) and motion JPEG 2000. A block cipher in CBC mode is used to encrypt the bitstream of each J2K code-block. The encrypted J2K codestream preserves almost the same fine granularity scalability as the original J2K codestream yet with small or negligible overhead, and has fine and near RD-optimal truncations for a large range of bitrates. The proposed scheme enables desired transcoding directly on a single encrypted codestream without decryption to fit diverse capabilities of devices and heterogeneous networks with time-varying bandwidths. Any node, trusted or not, along the delivery path is able to perform desired transcoding without sacrificing the end-to-end security of the system.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, we propose a novel encryption scheme for JPEG 2000 (J2K) and motion JPEG 2000. A block cipher in CBC mode is used to encrypt the bitstream of each J2K code-block. The encrypted J2K codestream preserves almost the same fine granularity scalability as the original J2K codestream yet with small or negligible overhead, [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13551],"msr-publication-type":[193716],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-164920","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-graphics-and-multimedia","msr-locale-en_us"],"msr_publishername":"IEEE","msr_edition":"IEEE Int. Symp. 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