这是我下面的登录页面代码，我还在谷歌上找到了一个 RSA PUBLIC PRIVITE KEY 我如何在我的代码中插入这个代码？任何人都可以帮助我我找到了 rsa 代码 formthis url http://xtrace.blogspot.com/search/label/RSA
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
setContentView(R.layout.agapplogin);
TextView lblMobileNo = (TextView)findViewById(R.id.lblMobileNo);
lblMobileNo.setTextColor(getResources().getColor(R.color.text_color_red));
mobile = (EditText)findViewById(R.id.txtMobileNo);
TextView lblPinNo = (TextView)findViewById(R.id.lblPinNo);
lblPinNo.setTextColor(getResources().getColor(R.color.text_color_red));
pin = (EditText)findViewById(R.id.txtPinNo);
btnLogin = (Button)findViewById(R.id.btnLogin);
btnClear = (Button)findViewById(R.id.btnClear);
btnLogin.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
postLoginData();
}
});
;}
public void postLoginData()
{
Intent i = new
Intent(this.getApplicationContext(),new.class);
Bundle bundle = new Bundle();
bundle.putString("mno", mobile.getText().toString());
bundle.putString("pinno", pin.getText().toString());
i.putExtras(bundle);
startActivity(i); }
}
///this is RSA code which i found
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.math.BigInteger;
import java.security.Key;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.spec.RSAPrivateKeySpec;
import java.security.spec.RSAPublicKeySpec;
/**
* This class generates key pair and saves in file in current directory
*
* @author amit
*
*/
public class RSAKeyGenerator {
public void generateKeyPair(String publicKeyFileName,
String privateKeyFileName) {
KeyPairGenerator kpg = null;
try {
kpg = KeyPairGenerator.getInstance("RSA");
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
kpg.initialize(2048);
KeyPair kp = kpg.genKeyPair();
Key publicKey = kp.getPublic();
Key privateKey = kp.getPrivate();
try {
KeyFactory fact = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pub = fact.getKeySpec(publicKey,
RSAPublicKeySpec.class);
RSAPrivateKeySpec priv = fact.getKeySpec(privateKey,
RSAPrivateKeySpec.class);
saveToFile(publicKeyFileName, pub.getModulus(),
pub.getPublicExponent());
System.out.println("public key saved");
saveToFile(privateKeyFileName, priv.getModulus(),
priv.getPrivateExponent());
System.out.println("private key saved");
} catch (Exception e) {
System.out.println("error ");
}
}
private void saveToFile(String fileName, BigInteger mod, BigInteger exp)
throws IOException {
ObjectOutputStream oout = new ObjectOutputStream(
new BufferedOutputStream(new FileOutputStream(fileName)));
try {
oout.writeObject(mod);
oout.writeObject(exp);
} catch (Exception e) {
throw new IOException("Unexpected error", e);
} finally {
oout.close();
}
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
RSAKeyGenerator t = new RSAKeyGenerator();
t.generateKeyPair("public.key", "private.key");
}
}
import javax.crypto.Cipher;
public class RSAEncDec {
private PublicKey readPublicKeyFromFile(String fileloc) throws IOException {
InputStream in = new FileInputStream(new File(fileloc));
ObjectInputStream oin = new ObjectInputStream(new BufferedInputStream(
in));
try {
BigInteger m = (BigInteger) oin.readObject();
BigInteger e = (BigInteger) oin.readObject();
RSAPublicKeySpec keySpec = new RSAPublicKeySpec(m, e);
KeyFactory fact = KeyFactory.getInstance("RSA");
PublicKey pubKey = fact.generatePublic(keySpec);
return pubKey;
} catch (Exception e) {
throw new RuntimeException("Spurious serialisation error", e);
} finally {
oin.close();
}
}
private PrivateKey readPrivateKeyFromFile(String fileLoc)
throws IOException {
InputStream in = new FileInputStream(new File(fileLoc));
ObjectInputStream oin = new ObjectInputStream(new BufferedInputStream(
in));
try {
BigInteger m = (BigInteger) oin.readObject();
BigInteger e = (BigInteger) oin.readObject();
RSAPrivateKeySpec keySpec = new RSAPrivateKeySpec(m, e);
KeyFactory fact = KeyFactory.getInstance("RSA");
PrivateKey prvKey = fact.generatePrivate(keySpec);
return prvKey;
} catch (Exception e) {
throw new RuntimeException("Spurious serialisation error", e);
} finally {
oin.close();
}
}
public byte[] rsaEncrypt(byte[] data, String fileLoc) {
try {
PublicKey pubKey = readPublicKeyFromFile(fileLoc);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
byte[] cipherData = cipher.doFinal(data);
return cipherData;
} catch (Exception e) {
System.out.println("some thing went wrong");
}
return null;
}
public byte[] rsaDecrypt(byte[] data, String fileLoc) {
try {
PrivateKey pubKey = readPrivateKeyFromFile(fileLoc);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, pubKey);
byte[] cipherData = cipher.doFinal(data);
return cipherData;
} catch (Exception e) {
System.out.println("some thing went wrong");
}
return null;
}
/*
* string
*
* @param data (normal string)
*
* @return
*/
public String encrypt(String data, String fileLoc) {
byte[] enc = rsaEncrypt(data.getBytes(), fileLoc);
return Base64.encode(enc);
}
/**
* return the normal string
*
* @param data
* (base64 encoded string)
* @return
* @throws Base64DecodingException
*/
public String decrypt(String data, String fileLoc)
throws Base64DecodingException {
byte[] enc = Base64.decode(data);
byte[] decryptedData = rsaDecrypt(enc, fileLoc);
return new String(decryptedData);
}
/**
*
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
RSAEncDec obj = new RSAEncDec();
String enc = obj.encrypt("hello world", "./public.key");
System.out.println(enc);
String dat = null;
try {
dat = obj.decrypt(enc, "./private.key");
} catch (Base64DecodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(dat);
}
}