Tag Archives: TLS

PKI – Simple Explanation

By tyler | 2023-10-28

PKI is an initialism for public key infrastructure. The context I typically see it used in are TLS or PGP. Don’t worry if you don’t know what those are. To understand PKI, you need to understand some basic cryptographic concepts. There is no math required. For a more complete introduction to cryptographic concepts, I wrote… Read More »

Self-Signed Certificate How-To

By tyler | 2016-09-27

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This guide will show you how to create a self-signed certificate with various tools. Quick Reference OpenSSL With New RSA Key openssl req -days 500 -newkey rsa:4096 -keyout privkey.pem -nodes -sha256 -x509 -out cert.pem With Existing RSA Key openssl req -days 500 -key privkey.pem -nodes -sha256 -x509 -out cert.pem Option Required What It Does req… Read More »