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Resumable Load Data Compression in Smart Grids
We propose a compression approach for load profile data, which addresses practical requirements of smart metering. By providing linear time complexity with respect to the input data size, ourExpand
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Transparent encryption for HEVC using bit-stream-based selective coefficient sign encryption
We propose a selective encryption scheme for HEVC which allows for transparent encryption in a wide range of quantization parameters. Our approach focusses on the AC coefficient signs, since they canExpand
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Privacy-preserving blockchain-based electric vehicle charging with dynamic tariff decisions
Electric vehicles are gaining widespread adoption and are a key component in the establishment of the smart grid. Beside the increasing number of electric vehicles, a dense and widespread chargingExpand
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Implementing a blockchain from scratch: why, how, and what we learned
Blockchains are proposed for many application domains apart from financial transactions. While there are generic blockchains that can be molded for specific use cases, they often lack a lightweightExpand
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Length-preserving bit-stream-based JPEG encryption
We propose a new method to encrypt baseline JPEG bit streams by selective Huffman code word swapping and coefficient value scrambling based on AES encryption. Furthermore, we show that our approachExpand
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Bitstream-Based JPEG Encryption in Real-time
The authors propose a framework to encrypt Baseline JPEG files directly at bitstream level, i.e., without the need to recompress them. The authors' approach enables encrypting more than 25 picturesExpand
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The Effect of Data Granularity on Load Data Compression
A vast volume of data is generated through smart metering. Suitable compression mechanisms for this kind of data are highly desirable to better utilize low-bandwidth links and to save costs andExpand
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Detecting Swimming Pools in 15-Minute Load Data
The ability to detect appliances in load data highly depends on the resolution of the data. While a lot of related work exists on detecting appliances in second or sub-second granularity load data,Expand
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Building a post-compression region-of-interest encryption framework for existing video surveillance systems
We propose an encryption framework design and implementation which add region-of-interest encryption functionality to existing video surveillance systems with minimal integration and deploymentExpand
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Compression Artifacts in Modern Video Coding and State-of-the-Art Means of Compensation
This chapter describes and explains common as well as less common distortions in modern video coding, ranging from artifacts appearing in MPEG-2 Video, MPEG-4 Part 2, H.264 and VC-1 to scalable andExpand
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