Jarsigner is a command-line tool provided as part of the Java Development Kit (JDK). It is used to digitally sign Java Archive (JAR) files and other related artifacts.
Follow these instructions to sign directly using Jarsigner and securely reference your private key stored in Software Trust Manager. Alternatively, integrate Jarsigner with Signing Manager Controller (SMCTL) for simplified signing.
Compatible with Windows, Linux, and macOS
Download and configure Software Trust Manager clients
Install JDK or OpenJDK (compatible with version 8-17)
Keypair alias
Unsigned jar file
.jar
.ear
.sar
.war
Jarsigner parameters are case-sensitive and must be passed in each request.
Parameter | Value |
|---|---|
-keystore | none |
-storepass | none |
-storetype | PKCS11 |
-providerclass | sun.security.pkcs11.sunPKCS11 |
-providerarg | Path to pkcs11properties.cfg |
The examples shown for the commands below use Java JDK 8, however DigiCert® Software Trust Manager supports JDK versions 8-17.
Note
The parameters may vary depending on which JDK version is installed.
To list jarsigner parameters, run:
jarsigner
To sign, run:
jarsigner -keystore NONE -storepass NONE -storetype PKCS11 -sigalg SHA256withRSA -providerClass sun.security.pkcs11.SunPKCS11 -providerArg <path to pkcs11properties.cfg> -signedjar <path to signed file output> <unsigned file path> <keypair alias> -tsa http://timestamp.digicert.com
Sample command:
jarsigner -keystore NONE -storepass NONE -storetype PKCS11 -sigalg SHA256withRSA -providerClass sun.security.pkcs11.SunPKCS11 -providerArg pkcs11properties2.cfg -signedjar C:\\Users\\Name\\Desktop\\signed\\signedjar.jar C:\\Users\\Name\\Desktop\ToSign\\jartosign.jar key3 -tsa "http://timestamp.digicert.com"To verify if a file is signed, run:
jarsigner -verify "<path to signed jar file>" -certs -verbose Note
To return more details, include -certs -verbose as an optional parameters.
Sample command:
jarsigner -verify "C:\Users\Name\Desktop\Signed\example.jar"