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Certificates and Encryption

Smallstep

Saving CA over HTTPS

PKI Hierarchy [Root CA Host (Offline Later)] |--- root_ca.crt-------------------------Copy to Int...

Certbot

Certificate Renewal Dry Run

Original ACME Request certbot certonly \ --nginx \ --server https://sub-ca.pki.home.internal/...

Convert Formats

Convert PFX to PEM

Output Combined Data openssl pkcs12 -nodes -in file.pfx -out file.pem Key and certificate combi...

Convert Certificate and Key to PFX

openssl pkcs12 -export -out file.pfx -inkey file.key -in file.crt Enter password details when pr...

Convert P12 to PEM

cat password_file.txt | openssl pkcs12 -in file.p12 -out file.pem -nodes -passin stdin

Create Self-Signed TLS Certificates

When You Should Do This If you have an internal/demo/test server where you'd like to encrypt tra...

Read X.509 Data from Certificate File

openssl x509 -in cert.pem -text -noout  

Read TLS Certificate from Server

OpenSSL openssl s_client -connect 127.0.0.1:443 -servername domain.tld Unix-like operating syst...
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