Hallo
Ich möchte ein Programm kompilieren was ich hier her habe. Das Problem ist, dass dort einige Fehler drinn sind und ich den letzten nicht lösen kann.
Hier ist meine Version:
In der Methode fromHex() liegt der letzte Fehler.
Es gibt leider kein Objekt was hexits heißt und ich hab auch keine Ahnung was der damit meint. Hat jemand da eine Idee?
Danke im Voraus
Ich möchte ein Programm kompilieren was ich hier her habe. Das Problem ist, dass dort einige Fehler drinn sind und ich den letzten nicht lösen kann.
Hier ist meine Version:
Code:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec;
import java.util.Random;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import javax.mail.MessagingException;
public class DecryptMessage
{
String salt;
protected SecretKey key;
protected AlgorithmParameterSpec paramSpec;
public DecryptMessage (String[] args) {
main2 (args);
}
public static void main (String[] args) {
new DecryptMessage (args);
}
public void main2 (String[] param) {
if (param.length<4) {
System.out.println("Quick Utility to Decrypt MailArchiva Message");
System.out.println(" DecryptMessage [salt] [passPhrase] [sourceFile] [outputFile]");
System.out.println(" [salt] found in server.conf");
System.out.println(" [passPhrase] found in server.conf");
System.out.println(" [sourceFile] .mrc file");
System.out.println(" outputFile] .eml file {can import into outlook}");
return;
}
//initKeys(param[0],param[1]);
InputStream in = null;
OutputStream out = null;
try
{
initKeys(param[0],param[1]);
in = getRawMessageInputStream(param[2], true, true);
out = getRawMessageOutputStream(param[3],false,false);
byte[] buf = new byte[1024];
int numRead = 0;
while ((numRead = in.read(buf)) >= 0) {
out.write(buf, 0, numRead);
}
}
catch(Exception e)
{
System.out.println("error occurred:"+e.getMessage());
e.printStackTrace();
}
finally
{
try
{
if (in !=null)
in.close();
if (out !=null) {
out.flush();
out.close();
}
}
catch(IOException ioe) { }
}
}
public void initKeys(String saltStr,String passPhrase) throws Exception {
byte[] salt = fromHex(saltStr);
String algorithm = "PBEWithMD5AndTripleDES";
int iterationCount = 17;
// Create the key
try
{
KeySpec keySpec = new PBEKeySpec(passPhrase.toCharArray(), salt, iterationCount);
key = SecretKeyFactory.getInstance(algorithm).generateSecret(keySpec);
paramSpec = new PBEParameterSpec(salt, iterationCount);
}
catch (java.security.NoSuchAlgorithmException e)
{
throw new Exception("failed to locate desired encryption algorithm");
}
catch (Exception e)
{
throw new Exception(e.toString());
}
}
public InputStream getRawMessageInputStream(String messageFileName, boolean decompress, boolean decrypt) throws IOException,Exception {
InputStream is = new BufferedInputStream(new FileInputStream(messageFileName));
Cipher dcipher = null;
if(decrypt) {
try
{
dcipher = Cipher.getInstance(key.getAlgorithm());
dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
}
catch (Exception e)
{
throw new Exception("failed to initialize cipher.");
}
is = new CipherInputStream(is,dcipher);
}
if(decompress)
is = new GZIPInputStream(is);
return is;
}
public OutputStream getRawMessageOutputStream(String messageFileName,boolean compress, boolean encrypt) throws IOException,Exception {
if (messageFileName==null)
throw new Exception("assertion failure: null messageFileName");
OutputStream os = new BufferedOutputStream(new FileOutputStream(messageFileName));
Cipher ecipher = null;
if (encrypt) {
try
{
ecipher = Cipher.getInstance(key.getAlgorithm());
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
}
catch (Exception e) {
throw new Exception("failed to initialize cipher.",e);
}
os = new CipherOutputStream(os,ecipher);
}
if (compress)
os = new GZIPOutputStream(os);
return os;
}
private byte[] fromHex(String s) {
s = s.toLowerCase();
byte[] b = new byte[(s.length() + 1) / 2];
int j = 0;
int h;
int nibble = -1;
for (int i = 0; i < s.length(); ++i) {
h = hexits.indexOf(s.charAt(i));
if (h >= 0) {
if (nibble < 0) {
nibble = h;
}
else {
b[j++] = (byte) ((nibble << 4) + h);
nibble = -1;
}
}
}
if (nibble >= 0){
b[j++] = (byte) (nibble << 4);
}
if (j < b.length) {
byte[] b2 = new byte[j];
System.arraycopy(b, 0, b2, 0, j);
b = b2;
}
return b;
}
}In der Methode fromHex() liegt der letzte Fehler.
Code:
h = hexits.indexOf(s.charAt(i));Danke im Voraus
