Here are the rules that a router uses to create the interface ID:ġ.
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The interface ID created this way is known as the modified extended unique identifier 64 (EUI-64). Also, the 7th bit in the first byte is flipped to a binary 1. An interface ID is created by inserting the hex number FFFE in the middle of the MAC address of the network card. Released under the Apache Licence, Version 2.The second part of an IPv6 unicast address (used to identify a host’s network interface) is usually a 64-bit interface identifier.The changelog for this version can be viewed here.This can be run locally or hosted on a web server with no configuration required.īe aware that the standalone version will never update itself, meaning it will not receive bug fixes or new features until you re-download newer versions manually. If you would like to download your own standalone copy of CyberChef to run in a segregated network or where there is limited or no Internet connectivity, you can get a ZIP file containing the whole web app below. You can confirm what network requests are made using your browser's developer console (F12) and viewing the Network tab. There are three operations that make calls to external services, those being the 'Show on map' operation which downloads map tiles from, the 'DNS over HTTPS' operation which resolves DNS requests using either Google or Cloudflare services, and the 'HTTP request' operation that calls out to the configured URL you enter. There are around 200 useful operations in CyberChef for anyone working on anything vaguely Internet-related, whether you just want to convert a timestamp to a different format, decompress gzipped data, create a SHA3 hash, or parse an X.509 certificate to find out who issued it.ĬyberChef runs entirely within your browser with no server-side component, meaning that your Input data and Recipe configuration are not sent anywhere, whether you use the live, official version of CyberChef or a downloaded, standalone version (assuming it is unmodified).
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It is hoped that by releasing CyberChef through GitHub, contributions can be added which can be rolled out into future versions of the tool. It should also appeal to the academic world and any individuals or companies involved in the analysis of digital data, be that software developers, analysts, mathematicians or casual puzzle solvers. It is expected that CyberChef will be useful for cybersecurity and antivirus companies. Simple functions can be combined to build up a "recipe", potentially resulting in complex analysis, which can be shared with other users and used with their input.įor those comfortable writing code, CyberChef is a quick and efficient way to prototype solutions to a problem which can then be scripted once proven to work. Complex techniques are now as trivial as drag-and-drop. The interface is designed with simplicity at its heart. CyberChef encourages both technical and non-technical people to explore data formats, encryption and compression.ĭigital data comes in all shapes, sizes and formats in the modern world – CyberChef helps to make sense of this data all on one easy-to-use platform.
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A simple, intuitive web app for analysing and decoding data without having to deal with complex tools or programming languages.