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A surprisingly hard, and widely misunderstood, problem with SSL certificates is figuring out what organization (called a certificate authority, or CA) issued a certificate. This information is useful for several reasons: You've discovered an unauthorized certificate for your domain via Certificate Transparency logs and need to contact the certificate authority to get the certificate revoked. You'v
Did you know that you can use the ssh-keygen command to sign and verify signatures on arbitrary data, like files and software releases? Although this feature isn't super new - it was added in 2019 with OpenSSH 8.0 - it seems to be little-known. That's a shame because it's super useful and the most viable alternative to PGP for signing data. If you're currently using PGP to sign data, you should co
LibreSSL's PRNG is Unsafe on Linux [Update: LibreSSL fork fix] The first version of LibreSSL portable, 2.0.0, was released a few days ago (followed soon after by 2.0.1). Despite the 2.0.x version numbers, these are only preview releases and shouldn't be used in production yet, but have been released to solicit testing and feedback. After testing and examining the codebase, my feedback is that the
git-crypt enables transparent encryption and decryption of files in a git repository. Files which you choose to protect are encrypted when committed, and decrypted when checked out. git-crypt lets you freely share a repository containing a mix of public and private content. git-crypt gracefully degrades, so developers without the secret key can still clone and commit to a repository with encrypted
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