How to pass jarsigner.exe passphrase via commandline?

Question

I know that this is unsafe, but is there any easy way to pass passphrase to the jarsigner.exe:

jrsigner.exe -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore ...

Enter Passphrase for keystore:

I am running it in batch file.

Answer 1

Well, why do you not simply use the corresponding parameters?

jarsigner -keystore my-keystore -storetype jceks -storepass "test" -keypass "test" my-archive.jar xander

Broken down into separate lines for better readability (but you have to put all parameters on one line, of course):

jarsigner
  -keystore my-keystore    # keystore path name
  -storetype jceks         # keystore type (whatever format yours is in)
  -storepass "test"        # keystore password
  -keypass "test"          # private key password
  my-archive.jar           # JAR path name
  xander                   # key name (alias)

Update: Please note with regard to passwords that

• enclosing passwords in double or single quotes is optional if the passwords contain no special characters.
• on the Windows command line you have to use double quotes enclosing passwords with special characters such as space. I am mentioning that because someone previously edited my answer and used single quotes which would simply fail on the Windows command line.
• on UNIX-like systems like Linux or also in the Windows Git Bash or Cygwin you can use both double or single quotes, but with double quotes beware of shell expansion.

Answer 2

My scenario was the Google plugin for Unity stopped passing the password to the jarsigner.

In the Sign() method, on file

\Assets\GooglePlayPlugins\com.google.android.appbundle\Editor\Scripts\Internal\BuildTools\JarSigner.cs

Change this:

var arguments = string.Format(
                "-J-Duser.language=en -keystore {0} {1} {2}",
                CommandLine.QuotePath(_keystoreName),
                CommandLine.QuotePath(zipFilePath),
                CommandLine.QuotePath(_keyaliasName));

to this:

var arguments = string.Format(
                "-J-Duser.language=en " +
                "-keystore  {0} " + // keystore path name
                "-storepass {1} " + // keystore password
                "-keypass   {2} " + // private key password
                "{3} " +            // JAR/ZIP/Bundle path name
                "{4} ",             // key name (alias)
                CommandLine.QuotePath(_keystoreName),
                _keystorePass,
                _keyaliasPass,
                CommandLine.QuotePath(zipFilePath),
                CommandLine.QuotePath(_keyaliasName));