Master of Science thesis Fighting Spam

}
private Coin[] mergeCoinArrays(Coin[] a, Coin[] b)
{
Coin[] c = new Coin[a.length + b.length];
int i = 0;
for(; i < a.length; i++)
{
c[i] = a[i];
}
for(; i < a.length + b.length; i++)
{
c[i] = b[i];
}
return c;
}
private byte[] mergeByteArrays(byte[] a, byte[] b)
{
byte[] c = new byte[a.length + b.length];
int i = 0;
for(; i < a.length; i++)
{
c[i] = a[i];
}
for(; i < a.length + b.length; i++)
{
c[i] = b[i];
}
return c;
}
public boolean isOpen()
{
return isOpen;
}
public void saveToFile() throws Exception
{
Debugger.debug(getClass(), 1,
"Saving Safe to " + Config.safeFilePath + " using password: " +
password
+ " and key-file-path: "
+ keyFilePath);
if(!isOpen())
throw new Exception("The safe is not open. Cannot save to disk");
password);
password);
String error = "";
try
{
SecretKey key = (SecretKey) FileHandler.readObject(new File(keyFilePath));
Debugger.debug(getClass(), 3, "Encrypting the privatekey.");
byte[] passEncryptedKey = Cryptotools.encryptWithPassword(privatekey,
byte[] encryptedKey = Cryptotools.encryptAES(passEncryptedKey, key);
Debugger.debug(getClass(), 3, "Encrypting the safe.");
byte[] passEncryptedSafe = Cryptotools.encryptWithPassword(safe, password);
byte[] encryptedSafe = Cryptotools.encryptAES(passEncryptedSafe, key);
Debugger.debug(getClass(), 3, "Encrypting the pending mails.");
byte[] passEncryptedMails = Cryptotools.encryptWithPassword(pendingMails,
byte[] encryptedMails = Cryptotools.encryptAES(passEncryptedMails, key);
Debugger.debug(getClass(), 3, "Encrypting the coin history.");
byte[] passEncryptedCoinHistory =
Cryptotools.encryptWithPassword(coinHistory, password);
byte[] encryptedCoinHistory =
Cryptotools.encryptAES(passEncryptedCoinHistory, key);
305