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Overview
CertKit is SSL/TLS certificate lifecycle management software. Discover, issue, renew, and automatically deploy certificates to Linux, Windows, and vendor appliances, then monitor everything so a certificate never expires on you again.
News
Somebody's been keeping a list of your certificates
There is a public record of every TLS certificate ever issued for your domain, and anyone can search it. Most people who run infrastructure have never heard of these certificate transparency logs. So I read our own log, and here's what anyone could learn
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TLS 1.2 isn't end of life, but it will be soon
You're probably running a TLS configuration that the IETF says is "non-conformant". But you didn't do anything wrong. In July, the IETF published a pair of RFCs that took away three of TLS 1.2's key exchange methods and froze the rest of it. The phrase th
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CertKit Private PKI: A private certificate authority without running one yourself
In May I wrote that you probably don't need private PKI for internal infrastructure, because DNS validation gets a publicly trusted certificate onto hosts that never touch the internet. In June I pointed out that Apple enforces an 825-day cap on private c
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Public mTLS client-auth certificates stop renewing in October
Chrome's root program decides what certificates will be trusted by Chrome, and what they are allowed to do. Recently, Google decided that client authentication isn't on the list. Under Chrome Root Program Policy v1.8, every certificate issued on or after
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How the TLS handshake works, and why half of it is gone
Every HTTPS connection starts with a TLS handshake. It's the security check, answering "are you who you say you are?" and "how are we going to keep this conversation secret?". There's a lot going on during the handshake, and there used to be even more bef
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