java-ssl-tools (jssl)

Install, ping and uninstall certificates in java keystore.

How to install

curl -sL https://raw.githubusercontent.com/pmamico/java-ssl-tools/main/install.sh | bash

on Windows, use Git Bash as system administrator.
or via homebrew:

brew install pmamico/java/jssl

Manual

jssl v1.3
Install trusted certificate and check SSL handshake against java keystore.
Usage: jssl <host> <operation> [-p|--port <arg>] [-a|--alias <arg>] [-h|--help] [-v|--version]
	<host>: without https:// and port, eg. google.com
	<operation>: ping, install or uninstall
	-p, --port: port (default: '443')
	-a, --alias: alias in keystore (default: '<host>')
	-h, --help: Prints help
	-v, --version: Prints version

Why not just use keytool?

Java has a built-in keytool to handle certificates on the java keystore.
However it has a few drawbacks:

In keytool there is no way to check that the certifiacate works

With jssl just type

$ jssl <URL> ping

With keytool you have to type a lot!

Especially annoying if you are in flow.
First you need to get the certificate somehow,
then to import it with keytool, thinking about alias names and the default password.
Eg.:

$ echo | openssl s_client -connect "<URL>:443"  2>/dev/null | openssl x509 > certificate.pem
$ /opt/homebrew/opt/openjdk@11/bin/keytool -importcert -cacerts -noprompt -alias <myalias> -file certificate.pem -keypass changeit -storepass changeit

is equivalent to

$ jssl <URL> install

Supports

	Java 1.8	Java 11	Java 17	Java 21
Linux	✔️	✔️	✔️	✔️
MacOS	✔️	✔️	✔️	✔️
Windows	✔️	✔️	✔️	✔️

Requirements

• JAVA_HOME environment
• openssl