Rsa-java Programming: Obtaining private keys and certificates from KeyStore __ algorithm

Keytool can be used to generate JSK types of keystore, which can hold many key (private keys and corresponding certificates).

Import java.io.*;
Import java.security.*;
Import java.security.cert.*;
Import java.util.*;
Import java.math.*;
Import sun.security.x509.*;
Import javax.crypto.*;

public static void Test1 () throws Exception
{ 
     
    //read KeyStore file to KeyStore object
   FileInputStream in = Newfileinputstream ("D:/.keystore");
    KeyStore ks= keystore.getinstance ("JKS");//Jks:java Keystorejks, there can be multiple types
    ks.load (in, "123456". ToCharArray ());
   In.close ();      
    
    Read the certificate and private key
    String alias= "ORBITCA" from the KeyStore;  The alias
    String pswd= the Record "111111";   The access password for the record      
   java.security.cert.Certificate cert =ks.getcertificate (alias);
    Publickeypublickey = Cert.getpublickey ();
    Privatekeyprivatekey = (Privatekey) Ks.getkey (Alias,pswd.tochararray ());   
}