jarsigner:tldr:407e7

jarsigner: Sign a JAR file with a specific algorithm.

jarsigner

$ jarsigner -sigalg ${algorithm} ${filename-jar} ${keystore_alias}

try on your machine

The command jarsigner -sigalg ${algorithm} ${filename-jar} ${keystore_alias} is used to sign a Java Archive (JAR) file using a digital signature for verification purposes. Here's a breakdown of the different elements in the command:

jarsigner: This is the command-line tool provided by the Java Development Kit (JDK) that is used to sign and verify JAR files.
-sigalg: This option specifies the signature algorithm to use when signing the JAR file. The ${algorithm} is a placeholder that should be replaced with the desired signature algorithm, such as "SHA256withRSA" or "SHA1withDSA".
${filename-jar}: This is the name of the JAR file that you want to sign. The ${filename-jar} is a placeholder that should be replaced with the actual filename and path of the JAR file.
${keystore_alias}: This is the alias of the private key and certificate stored in the Java keystore used for signing the JAR file. The ${keystore_alias} is a placeholder that should be replaced with the actual alias.

By running this command with the appropriate values, the specified JAR file will be signed using the provided algorithm and the private key associated with the specified keystore alias. The resulting signed JAR file can then be verified using the corresponding public key.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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