openssl

command security

SSL/TLS certificate and key management toolkit

Required Packages

sudo apt install -y openssl

Options

Operation *

Certificate file

Human-readable output (-text) Human-readable output (-text)

Suppress PEM output (-noout) Suppress PEM output (-noout)

Show dates only (-dates) Show dates only (-dates)

Show only notBefore/notAfter dates

Show subject only (-subject) Show subject only (-subject)

Show issuer only (-issuer) Show issuer only (-issuer)

openssl x509 -in -text -noout