代码方式

import com.alibaba.druid.filter.config.ConfigTools;

public class Test {
  public static void main(String[] args) throws Exception {

      String pwd = "123456";

      //生成公钥与私钥
      String[] arr = ConfigTools.genKeyPair(512);
      String privateKey = arr[0];
      String publicKey = arr[1];
      System.out.println("privateKey:" + privateKey);
      System.out.println("publicKey:" + publicKey);

      //明文密码转密文密码
      String pwdEnc = ConfigTools.encrypt(privateKey, pwd);
      System.out.println("pwdEnc:" + pwdEnc);

      //密文密码转明文密码
      System.out.println("pwd:" + ConfigTools.decrypt(publicKey, pwdEnc));
  }
}

命令方式

java -cp druid-1.1.22.jar com.alibaba.druid.filter.config.ConfigTools 123456

ConfigTools类只提供了生成密文密码，如果向将密文密码转明文密码只能通过代码方式