Java program implements the management of KeyStore

1 Java programs list all entries for KeyStore

Import java.util.*;import java.io.*;import java.security.*;p ublic class showalias{public static void main (String args[        ]) throws exception{String pass= "080302";        String name= ". KeyStore";        FileInputStream in=new FileInputStream (name);        KeyStore ks=keystore.getinstance ("JKS");           Ks.load (In,pass.tochararray ());        Enumeratione=ks.aliases ();        while (E.hasmoreelements ()) {System.out.println (e.nextelement ()); }    }}  

2 Java program modifies keystore password

Import Java.io.*;import java.security.*;p ublic class setstorepass{public static void Main (String args[]) throws Excep        tion{char[] oldpass= "080302". ToCharArray ();        Char[] newpass= "123456". ToCharArray ();        String name= ". KeyStore";        FileInputStream in=new FileInputStream (name);        KeyStore ks=keystore.getinstance ("JKS");        Ks.load (In,oldpass);        In.close ();        FileOutputStream output=new FileOutputStream (name);        Ks.store (Output,newpass);     Output.close (); }}  

3 java program modifies the password of the KeyStore entry and adds the entry

Package Test;import Java.io.*;import Java.security.*;import java.security.cert.certificate;public class SetKeyPass{        public static void Main (string args[]) throws exception{    /Read related parameters String name= ". KeyStore";        String alias= "MyKey";        Char[] storepass= "123456". ToCharArray ();        Char[] oldkeypass= "080302". ToCharArray ();        Char[] newkeypass= "123456". ToCharArray ();        Gets the KeyStore. KeyStore KeyStore Object and loads the KeyStore fileinputstream in=new fileinputstream (name);        KeyStore ks=keystore.getinstance ("JKS");        Ks.load (In,storepass);        Get the certificate chain for the entry that corresponds to the alias certificate[] Cchain=ks.getcertificatechain (alias);        Read the private key of the entry corresponding to the alias Privatekey pk= (Privatekey) Ks.getkey (Alias,oldkeypass);        Add a new entry to the KeyStore ks.setkeyentry (Alias,pk,newkeypass,cchain);        In.close ();        Writes the contents of the KeyStore object to a new file FileOutputStream output=new fileoutputstream ("333");        Ks.store (Output,storepass); Output.close ();     }} 

4 Java program Check aliases and delete entries

Package Test;import Java.io.*;import java.security.*;p ublic class deletealias{    public static void Main (String args[]) throws exception{        string pass = "123456";    & nbsp   string name = ". KeyStore";        string alias = "MyKey";    & nbsp   fileinputstream in=new FileInputStream (name);        keystore ks=           Keystore.getinstance ("JKS");         ks.load (In,pass.tochararray ());        if ( Ks.containsalias (alias)) {            ks.deleteentry (alias);            fileoutputstream output=new fileoutputstream (name);             ks.store (Output,pass.tochararray ());             system.out.prinTLN ("Alias" +alias+ "deleted");        }else{             SYSTEM.OUT.PRINTLN ("Alias not Exist");        }    }   }

5 Java programs read certificates directly from KeyStore

Import Java.io.*;import Java.security.*;import Java.security.cert.certificate;public class PrintCert2{public    static void Main (string args[]) throws exception{          String pass= "080302";          String alias= "MyKey";          String name= ". KeyStore";          FileInputStream in=new FileInputStream (name);          KeyStore ks=keystore.getinstance ("JKS");                     Ks.load (In,pass.tochararray ());          Certificate C=ks.getcertificate (alias);          In.close ();         System.out.println (C.tostring ());}    }  

Java program implements the management of KeyStore