import javax.crypto.Cipher;
import java.security.*;
import java.security.spec.RSAPublicKeySpec;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.InvalidKeySpecException;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.io.*;
import java.math.BigInteger;
/**
* RSA utility class. Provide encryption, decryption, key generation and other methods.
* You need to go to /software_zone/2007/0925/523319.shtml
Refer to this again
/t/20040427/20/3014655.html
p>