update-java-ca-certificates's Introduction

update-java-ca-certificates

This small utility takes care of creating a system-wide trust store starting from your Linux CA trust store.

This command is supposed to be run after running update-ca-certificates (8), so that the Java Keystore is in sync with the system trust store.

The issue that this tool is trying to solve is already solved by Arch Linux's update-ca-trust (8). Sadly not all the Linux distributions have solved the issue (yet), thus this is a tool to help standardize the mess that's currently out there in terms of path standardization and ca-certificates location.

Usage

Usage: update-java-ca-certificates [--debug] [--force] [--certificate-bundle CERTIFICATE-BUNDLE] [--password PASSWORD] FILE

Positional arguments:
  FILE

Options:
  --debug, -D
  --force, -f
  --certificate-bundle CERTIFICATE-BUNDLE, -c CERTIFICATE-BUNDLE [default: /etc/ssl/certs/ca-certificates.crt]
  --password PASSWORD, -p PASSWORD [default: changeit]
  --help, -h             display this help and exit

Example

update-java-ca-certificates -c /etc/ssl/certs/ca-certificates.crt /etc/ssl/java/cacerts

Result

keytool -list -keystore /etc/ssl/java/cacerts -storepass changeit

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 137 entries

02ed0eb28c14da45165c566791700d6451d7fb56f0b2ab1d3b8eb070e56edff5, 6 Jan 2022, trustedCertEntry, 
Certificate fingerprint (SHA-256): 02:ED:0E:B2:8C:14:DA:45:16:5C:56:67:91:70:0D:64:51:D7:FB:56:F0:B2:AB:1D:3B:8E:B0:70:E5:6E:DF:F5
(...)

Building

Requirements

Golang (1.19+)
Make

Steps

make
./bin/update-java-ca-certificates -h

Paths

This tool assumes the directories are set up according to what update-ca-trust (8) uses.

`/etc/ssl/certs`

This directory should contain individual CA certificates trusted for TLS authentication usage. The format to be used is the BEGIN CERTIFICATE / END CERTIFICATE one.

If you are able to parse the certificate with:

openssl x509 -in /etc/ssl/certs/your-certificate.pem  -noout -text

then you're good.

`/etc/ssl/ca-certificates.crt`

This file contains a bundle that is updated by update-ca-trust / update-ca-certificates.

`/etc/ssl/java/cacerts`

This file contains the trust anchor for Java. Its format is the Java Key Store (JKS).

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