Mr. Carlos Serrão Profile

Carlos Serrão

at ISCTE

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Proceedings Article | 14 March 2005 Paper

WCAM: secured video surveillance with digital rights management

Yulen Sadourny, Vania Conan, Carlos Serrao, Pedro Fonseca

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.586963

KEYWORDS: Video surveillance, Video, Image encryption, Computer security, Standards development, Network security, Image processing, Image compression, Image quality, Image resolution

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The WCAM project aims to provide an integrated system for secure delivery of video surveillance data over a wireless network, while remaining scalable and robust to transmission errors. To achieve these goals, the content is encoded in Motion-JPEG2000 and streamed with a specific RTP protocol encapsulation to prevent the loss of packets containing the most essential data. Protection of the video data is performed at content level using the standardized JPSEC syntax, along with flexible encryption of quality layers or resolution levels. This selective encryption respects the JPEG2000 structure of the stream, not only ensuring end-to-end ciphered delivery, but also enabling dynamic content adaptation within the wireless network (quality of service, adaptation to the user's terminal). Some DRM modules from OPENSDRM platform will be added to manage all authenticated peers on the WLAN (from end-users to cameras), as well as to manage the rights to display conditionally the video data. This whole integrated architecture addresses several security problems such as data encryption, integrity and access control. Using several protection layers, the level of confidentiality can depend on both the content characteristics and the user rights, thus also addressing the critical issue of privacy.

Proceedings Article | 19 November 2003 Paper

A method for protecting and controlling access to JPEG2000 images

Carlos Serrão, Antonio Serra, Pedro Fonseca, Jose Salles Dias

Proceedings Volume 5203, (2003) https://doi.org/10.1117/12.512537

KEYWORDS: JPEG2000, Interfaces, Image compression, Standards development, Information security, Computer security, Image processing, Image encryption, Satellite imaging, Solid state lighting

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The image compression standard JPEG2000 brings not only powerful compression performance but also new functionality unavailable in previous standards (such as region of interest, scalability and random access to image data, through flexible code stream description of the image). ISO/IEC JTC1/SC29/WG1, which is the ISO Committee working group for JPEG2000 standardization is currently defining additional parts to the standard that will allow extended functionalities. One of these extensions is Part 8 JPSEC - JPEG2000 security, which deals with the protection and access control of JPEG2000 code-stream. This paper reports the JPSEC activities detailing with the three core experiments which are in progress to supply the JPEG2000 ISO Committee, with the appropriate protection technology. These core experiments are focusing on the protection of the code-stream itself and on the overall security infrastructure that is needed to manage the access rights of users and applications to that protected code-stream. Regarding the encryption/scrambling process, this one deals with the JPEG2000 code stream in such a way that only the packets, which contain image data information are encrypted. All the other code-stream data will be in clear mode. This paper will also advance details of one of the JPSEC proposed solutions for the security infrastructure - OpenSDRM (Open and Secure Digital Rights Management), which provides security and rights management from the content provider to the content final user. A use case where this security infrastructure was successfully used will also be provided.

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