利用jarsigner命令查看jar文件签名及去除jar文件原有签名方法

查看jar文件签名

jarsigner -verify -verbose -certs <jar-file>
# 例如
jarsigner -verify -verbose -certs jetty-jmx-10.0.15.jar 

          0 Tue Apr 11 12:25:30 CST 2023 META-INF/
          0 Tue Apr 11 12:25:28 CST 2023 org/
          0 Tue Apr 11 12:25:28 CST 2023 org/eclipse/
          0 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/
          0 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/
          0 Tue Apr 11 12:25:30 CST 2023 META-INF/maven/
          0 Tue Apr 11 12:25:30 CST 2023 META-INF/maven/org.eclipse.jetty/
          0 Tue Apr 11 12:25:30 CST 2023 META-INF/maven/org.eclipse.jetty/jetty-jmx/
      15550 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/MetaData.class
       6833 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/MetaData$AttributeInfo.class
       6178 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/MetaData$OperationInfo.class
       9324 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/ConnectorServer.class
      15975 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/MBeanContainer.class
       2967 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/ConnectorServer$JMXRMIServerSocketFactory.class
       5450 Tue Apr 11 12:25:28 CST 2023 org/eclipse/jetty/jmx/ObjectMBean.class
       3208 Tue Apr 11 12:25:28 CST 2023 META-INF/NOTICE.txt
      25604 Tue Apr 11 12:25:28 CST 2023 META-INF/LICENSE
       1844 Tue Apr 11 12:24:26 CST 2023 META-INF/maven/org.eclipse.jetty/jetty-jmx/pom.xml
         63 Tue Apr 11 12:25:30 CST 2023 META-INF/maven/org.eclipse.jetty/jetty-jmx/pom.properties
        371 Tue Apr 11 12:25:28 CST 2023 module-info.class
       1801 Tue Apr 11 12:25:30 CST 2023 META-INF/MANIFEST.MF

  s = signature was verified
  m = entry is listed in manifest
  k = at least one certificate was found in keystore

jar is unsigned.

去除jar文件原有签名

zip -d <jar-file> META-INF/*.SF META-INF/*.RSA META-INF/*.DSA META-INF/*.MF
# 例如:
zip -d test.jar META-INF/*.SF META-INF/*.RSA META-INF/*.DSA META-INF/*.MF