Timing channels information theory pdf

An informationtheoretic and gametheoretic study of timing channels. Information theory was not just a product of the work of claude shannon. Ad7490 16channel, 1 msps, 12bit adc with sequencer in 28. An informationtheoretic and gametheoretic study of. Robust decoding for timing channels information theory. Detection of covert channel encoding in network packet delays. Identifying patterns known as wolfe waves and gartleys, however, can help predict these breakouts in terms of both their timing and scope their proportion to the established channel.

The best achievable data rate of a covert timing channel measures the severity of its threat, and can be obtained by estimating the information theoretic channel capacity 3, 5, 10, 11. Mndot traffic signal timing and coordination manual may 2017 overview page 11 1 overview 1. In computer security, a covert channel is a type of attack that creates a capability to transfer information objects between processes that are not supposed to be allowed to. Exploiting packetspsila timing information for covert communication in the internet has been explored by several network timing channels and watermarking schemes. Index termschannel coding, covert timing channels, jam. The fundamental tradeoff between the rates at which energy and reliable information can be transmitted over a single noisy line is studied. Indeed the diversity and directions of their perspectives and interests shaped the direction of information theory.

Transporting information and energy simultaneously ieee. To reduce the throughput of covert timing channels, several methods such as timing channel jammers 6, fuzzy times 12 and network pump, have been proposed. With timing covert channels the sender transmits data to the receiver by modulating its use of system resources in such a way that the manipulation a ects the response time observed by the receiver 7. Shannons information theory is used to quantify the resulting information flow. Perhaps gallager 16 was the first to study the information. It was the result of crucial contributions made by many distinct individuals, from a variety of backgrounds, who took his ideas and expanded upon them. Market timing is the act of moving in and out of the market or switching between asset classes based on using predictive methods such as technical indicators or economic data. Information theory is the branch of probability theory that includes the application of communication systems. An introduction to network information theory with slepian. The sender chooses between two channels according to bern. Speci cally, this can be done by modulating the wait time between packet transmissions.

Information theory is the branch of probability theory that. On the capacity of diffusionbased molecular timing channels arxiv. The channel capacity of a certain noisy timing channel ieee xplore. D document feedback information furnished by analog devices is believed to be accurate and reliable. This timing information adds an additional degree of freedom in to the. Proceedings of ieee international symposium on information theory, jun 2007. Information theory and neural coding nature neuroscience. Abstractthe effect of noise upon a simple covert timing channel is investigated.