我现在正在为Android制作一条消息签名APP。
APP由BlowfishCipherActivity，SignedMailExample.java（它成功地在纯java编译器上工作）组成，依此类推。
但是，当我执行应用程序时，它无法从'SignedMailExample.java'调用signMail（）方法。请参阅第'userSignedMessage = SignedMailExample.signMail（userOriginalMessage）;'在BlowfishCipherActivity.java中。
厌倦的事情是ACtivity类使用'pkcs10request = PKCS10Generater.reqGen（）;'成功调用另一个类的方法。
请帮忙。
- BlowfishCipherActivity.java
package exam.blowfishcipher;
import java.io.*;
import android.app.Activity;
import android.content.*;
import android.os.Bundle;
import android.util.*;
import android.view.*;
import android.widget.*;
public class BlowfishCipherActivity extends Activity {
/** Called when the activity is first created. */
TextView final_result;
//add 20130510
static String userOriginalMessage;
static String userSignedMessage;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn = (Button)findViewById(R.id.btn);
btn.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
/////initial message
EditText init_message = (EditText)findViewById(R.id.init_message);
String message = init_message.getText().toString();
//password
EditText init_password = (EditText)findViewById(R.id.init_password);
String password = init_password.getText().toString();
//
BlowTest BlowfishConverter = new BlowTest();
//PKCS10Generater PKCS10Gen = new PKCS10Generater();
//BlowfishConverter.encrypt(message, password);
final_result = (EditText)findViewById(R.id.final_result);
final_result.setText(String.format("%s", BlowfishConverter.encrypt(message, password)));
userOriginalMessage = final_result.getText().toString();
}
});
Button btn1 = (Button)findViewById(R.id.btn1);
btn1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
/////initial message
EditText init_message = (EditText)findViewById(R.id.init_message);
String message = init_message.getText().toString();
//password
EditText init_password = (EditText)findViewById(R.id.init_password);
String password = init_password.getText().toString();
//
BlowTest BlowfishConverter = new BlowTest();
//BlowfishConverter.encrypt(message, password);
final_result = (EditText)findViewById(R.id.final_result);
try {
final_result.setText(String.format("%s", BlowfishConverter.decrypt(message, password)));
//userOriginalMessage = final_result.getText().toString();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
Button btn2 = (Button)findViewById(R.id.btn2);
btn2.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
//PKCS10Generater PKCS10Gen = new PKCS10Generater();
try {
Log.e("Position", "BeforePKIGeneration");
//add 20130429
String pkcs10request;
pkcs10request = PKCS10Generater.reqGen();
//
Toast.makeText(BlowfishCipherActivity.this, "PKI generation succeed", Toast.LENGTH_SHORT).show();
//add 20130429
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
clipboard.setText(pkcs10request);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
Toast.makeText(BlowfishCipherActivity.this, "An error has occured", Toast.LENGTH_SHORT).show();
}
}
});
Button btn3 = (Button)findViewById(R.id.btn3);
btn3.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
try {
Log.e("Position", "BeforeSignMessage");
//String plainMessage = "test";
//SignedMailExample.signMail(userOriginalMessage);
//add 20130429
Log.e("Position", userOriginalMessage);
//add 20130511
userSignedMessage = SignedMailExample.signMail(userOriginalMessage);
Log.e("Position", userSignedMessage);
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
clipboard.setText(userSignedMessage);
Toast.makeText(BlowfishCipherActivity.this, "Signing SMS has succeed", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(BlowfishCipherActivity.this, "An error has occured", Toast.LENGTH_SHORT).show();
}
}
});
}
}
- SignedMailExample.java
package exam.blowfishcipher;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.security.KeyPair;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.cert.*;
import java.util.Arrays;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import org.spongycastle.asn1.ASN1EncodableVector;
import org.spongycastle.asn1.cms.AttributeTable;
import org.spongycastle.asn1.smime.SMIMECapabilitiesAttribute;
import org.spongycastle.asn1.smime.SMIMECapability;
import org.spongycastle.asn1.smime.SMIMECapabilityVector;
import org.spongycastle.asn1.smime.SMIMEEncryptionKeyPreferenceAttribute;
import org.spongycastle.jce.PKCS10CertificationRequest;
import org.spongycastle.mail.smime.SMIMESigned;
import org.spongycastle.mail.smime.SMIMESignedGenerator;
import org.spongycastle.mail.smime.SMIMEUtil;
import org.spongycastle.openssl.PEMReader;
import org.spongycastle.openssl.PEMWriter;
import android.os.*;
import android.util.*;
/**
* a simple example that creates and processes a signed mail message.
*/
public class SignedMailExample
extends SignedDataProcessor
{
//static String userCert;
//static String userPrivate;
//add 20130510
//static String signedMail;
public static MimeMultipart createMultipartWithSignature(
PrivateKey key,
X509Certificate cert,
CertStore certsAndCRLs,
MimeBodyPart dataPart)
throws Exception
{
// create some smime capabilities in case someone wants to respond
ASN1EncodableVector signedAttrs = new ASN1EncodableVector();
SMIMECapabilityVector caps = new SMIMECapabilityVector();
caps.addCapability(SMIMECapability.aES256_CBC);
caps.addCapability(SMIMECapability.dES_EDE3_CBC);
caps.addCapability(SMIMECapability.rC2_CBC, 128);
signedAttrs.add(new SMIMECapabilitiesAttribute(caps));
signedAttrs.add(new SMIMEEncryptionKeyPreferenceAttribute(SMIMEUtil.createIssuerAndSerialNumberFor(cert)));
// set up the generator
SMIMESignedGenerator gen = new SMIMESignedGenerator();
gen.addSigner(key, cert, SMIMESignedGenerator.DIGEST_SHA256, new AttributeTable(signedAttrs), null);
gen.addCertificatesAndCRLs(certsAndCRLs);
// create the signed message
return gen.generate(dataPart, "BC");
}
////////////////////////////////////////////added by jeon
public static void pemEncodeToFile(String filename, Object obj, char[] password) throws Exception{
PEMWriter pw = new PEMWriter(new FileWriter(filename));
if (password != null && password.length > 0) {
pw.writeObject(obj, "DESEDE", password, new SecureRandom());
} else {
pw.writeObject(obj);
}
pw.flush();
pw.close();
}
////////////////////////////////////////////added by jeon
////////////////////////////////////////////added by jeon
public static KeyStore createCredentials_modified()
throws Exception
{
KeyStore store = KeyStore.getInstance("JKS");
store.load(null, null);
X500PrivateCredential rootCredential = createRootCredential_modified();
store.setCertificateEntry(rootCredential.getAlias(), rootCredential.getCertificate());
store.setKeyEntry(rootCredential.getAlias(), rootCredential.getPrivateKey(), "password".toCharArray(),
new Certificate[] { rootCredential.getCertificate(), rootCredential.getCertificate(), rootCredential.getCertificate() });
return store;
}
public static X500PrivateCredential createRootCredential_modified()
throws Exception
{
PEMReader rootPriva = new PEMReader(
new InputStreamReader(
new FileInputStream(Environment.getExternalStorageDirectory()+"/pkcs10priv.key"))); //modified 20130510
PEMReader rootCerti = new PEMReader(
new InputStreamReader(
new FileInputStream(Environment.getExternalStorageDirectory()+"/userCert.cer")));
KeyPair rootPrivate = (KeyPair)rootPriva.readObject();
X509Certificate rootCert = (X509Certificate)rootCerti.readObject();
//KeyPair rootPair = generateRSAKeyPair();
//X509Certificate rootCert = generateRootCert(rootPair);
return new X500PrivateCredential(rootCert, rootPrivate.getPrivate(), "root"); //?????? root
}
////////////////////////////////////////////added by jeon
public static String signMail(String plainMessage) throws Exception{
KeyStore credentials = createCredentials_modified();
PrivateKey key = (PrivateKey)credentials.getKey("root", "password".toCharArray());
Certificate[] chain = credentials.getCertificateChain("root");
CertStore certsAndCRLs = CertStore.getInstance("Collection",
new CollectionCertStoreParameters(Arrays.asList(chain)), "BC");
X509Certificate cert = (X509Certificate)chain[0];
Log.e("Position", "position1");
// create the message we want signed
MimeBodyPart dataPart = new MimeBodyPart();
//
dataPart.setText(plainMessage);
Log.e("Position", "position2");
// create the signed message
MimeMultipart multiPart = createMultipartWithSignature(key, cert, certsAndCRLs, dataPart);
// create the mail message
MimeMessage mail = Utils.createMimeMessage("my signed message", multiPart, multiPart.getContentType());
Log.e("Position", "position3");
//added by JEON
FileOutputStream fos = new FileOutputStream(Environment.getExternalStorageDirectory()+"/SignedSMS.mail");
String SingedSMS = mail.toString();
fos.write(SingedSMS.getBytes());
fos.close();
////
return SingedSMS;
}
////
}