SSL

How-tos for certificates and TLS: OpenSSL, keytool, keystores, conversions, and troubleshooting.

Check certificate (OpenSSL) Inspect a cert chain and TLS handshake with s_client.

Custom CA using OpenSSL Create a CA and sign a server certificate.

Keytool Generate keys, create a CSR, import certs, list a keystore.

Convert PEM to JKS Convert a PEM cert and key to a Java JKS keystore.