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Thomas Kahle
Works at Otto von Guericke University of Magdeburg
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Thomas Kahle

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If it ain't broken, it doesn't have enough features yet.
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The systemd mantra?
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Thomas Kahle

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In short, Heartbeat allows one endpoint to go "I'm sending you some data, echo it back to me". It supports up to 64 KiB. You send both a length figure and the data itself. Unfortunately, if you use the length figure to claim "I'm sending 64 KiB of data" (for example) and then only actually send, say, one byte, OpenSSL would send you back your one byte -- plus 64 KiB minus one byte of other data from RAM.
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Thomas Kahle

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One side remark to the GnuTLS bug is that we see that shipping internal libraries in your software package is bad. If you shipped an internal version of GnuTLS, or copied code from it at some point, then better make a release now.
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Now I have, partially. I just discovered that you can also do all this stuff in vim.
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Am I affected by the bug?

You are likely to be affected either directly or indirectly. OpenSSL is the most popular open source cryptographic library and TLS (transport layer security) implementation used to encrypt traffic on the Internet. Your popular social site, your company's site, commerce site, hobby site, site you install software from or even sites run by your government might be using vulnerable OpenSSL. Many of online services use TLS to both to identify themselves to you and to protect your privacy and transactions. You might have networked appliances with logins secured by this buggy implementation of the TLS. Furthermore you might have client side software on your computer that could expose the data from your computer if you connect to compromised services.
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Thomas Kahle

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I recently learned about the existence of "set-based methods" in model reduction. To a mathematician this sounds way too general. What is a method that is not in some way based on the notion of sets? Do set-based methods include all of mathematics based on Zermelo-Fraenkel?  I guess, homotopy type thoery methods are definitely not subsumed.
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People and software should be free
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When I was young, we used to compile our own operating systems.
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Mathematics
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  • Otto von Guericke University of Magdeburg
    JProf, 2013 - present
  • TU Munich
    post doc, 2013 - present
  • MSRI
    post doc, 2012 - 2012
  • EPDI
    Math post doc, 2010 - 2012
  • Max Planck Institute for Mathematics in the Sciences
    PhD student, 2006 - 2010
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+49 391 6711440
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