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https://rya.nc/dkim-privates.html DKIM: Show Your Privates | rya.nc If you’re like most people, there’s a good chance that it’s been years since you’ve sent an email that wasn’t cryptographically signed. You… rya ncdkimshowprivates https://rya.nc/xz-valid-n.html Putting an xz Backdoor Payload in a Valid RSA Key | rya.nc Last week, a backdoor was discovered in xz-utils. The backdoor processes commands sent using RSA public keys as a covert channel. In order to prevent… xz backdoorrsa keyrya ncputtingpayload https://rya.nc/tag/email.html email | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncemail https://rya.nc/threads/dakami-eulogy.html Dan Kaminsky - A Eulogy | rya.nc I remember attending Dan Kaminsky’s talk at DEFCON 12 and being blown away by it. Three years later, I went on the original “Hackers on a Plane”… rya ncdankaminskyeulogy https://rya.nc/ Ryan Castellucci’s blog | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncryanblog https://rya.nc/artisanal-rsa.html Artisanal RSA | rya.nc Sometimes hacking requires doing things that, while possible to do with some algorithm, simply aren’t supported by any existing implementation.… rya ncartisanalrsa https://rya.nc/author/ryanc.html Posts by Ryan Castellucci | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncpostsryancastellucci https://rya.nc/tag/security.html security | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncsecurity https://rya.nc/tag/ssl.html ssl | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncssl https://rya.nc/privacy.html Privacy Policy | rya.nc I take my own privacy very seriously and feel that it is important to treat visitors to my site as I would like to be treated. Information I collect Web… privacy policyrya nc https://rya.nc/contact.html Contact | rya.nc The best way to contact me is via email ([loading new address...]). Please be aware that I’m usually fairly busy. Between my day job, side projects… rya nc https://rya.nc/tag/rsa.html rsa | rya.nc Ryan Castellucci’s blog - posts on computer security, programming, systems administration, electronics and general geekery rya ncrsa https://rya.nc/vpp-hack.html Hacking a Virtual Power Plant | rya.nc I recently had solar panels and a battery storage system from GivEnergy installed at my house. A major selling point for me was that they have a local… virtual power plantrya nchacking