cryptix-users

[jit <ji...@tm...>]

hello,I need the command to execute my cryptix32.jar file.I'm doin a security application.
This file is used to encrypt and decrypt.

The command i'm using is
 javac -classpath "C:\j2sdk1.4.2_02\lib\cryptix32.jar" *.java
  java MainApp

Is it correct?

the Crypt file source code is as follow:-

 
import xjava.security.Cipher;
import cryptix.provider.key.RawKeyGenerator;

import java.math.BigInteger;
import java.security.Key;
import java.security.MessageDigest;
import java.security.Security;
import java.math.BigDecimal;

import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.InvalidKeyException;
import java.security.KeyException;
import xjava.security.WeakKeyException;


 /**
  *Implementation of the AES (Rijndael) encryption standard as been implemented in 
  *<a href="http://www.cryptix.org/">Cryptix</a> java jce library
  */


public class Crypt
{
 /**
  *Digest algorithm used to has the user supplied password to produce
  */
 public static final String DIGEST_ALGO = "SHA";
 public static final String CIPHER_ALGO = "Rijndael/CBC/PKCS#7";
 public static final String CIPHER = "Rijndael";
 public static final String PROVIDER    = "Cryptix";
 public static int iteration = 1000;
 
 public static byte[] digest(byte[] passBytes) 
  throws NoSuchAlgorithmException, 
    NoSuchProviderException
 {
  MessageDigest digest = MessageDigest.getInstance(DIGEST_ALGO,PROVIDER);
  return digest.digest(passBytes);
  file://MessageDigest digestAlgo = MessageDigest.getInstance(DIGEST_ALGO);
  file://digestAlgo.update(passBytes);
  file://return digestAlgo.digest();
 }
 
 public static byte[] makeKey(String password, int size) 
  throws NoSuchAlgorithmException, 
    NoSuchProviderException
 file://password = user supplied password
 file://size = size of key (128, 192,256)
 {
  
  byte[] passBytes = digest(password.getBytes());
  
  
  
  for (int i=0; i < iteration-1; i++)
  {
   passBytes = digest(passBytes); 
  }
  System.out.println(passBytes.length);  file://20
  byte[] keyBytes = new byte[size/8];
  
  
  
  System.out.println(keyBytes.length); file://16
  
  for (int i=0; i < keyBytes.length; i++)
  {
   if (i < passBytes.length)
    keyBytes[i] = passBytes[i];
   else
    keyBytes[i] = passBytes[i-passBytes.length];
  }
  return keyBytes;
 }
 
 
 
 public static byte[] encrypt(String password, int keySize, byte[] data) throws Exception
  /*the real Exception
   *throws KeyException,
    NoSuchProviderException,
    NoSuchAlgorithmException,
    SecurityException*/
 {
  
 try
 {
   file://byte[] digestedPassword = makeKey(password,keySize);
   
   Security.addProvider(new cryptix.provider.Cryptix());
   RawKeyGenerator keyGenerator = (RawKeyGenerator) RawKeyGenerator.getInstance(CIPHER,PROVIDER);
   byte[] digestedPassword = makeKey(password,keySize);
   Key key = keyGenerator.generateKey(digestedPassword); 
   Cipher cipher = Cipher.getInstance(CIPHER_ALGO,PROVIDER);
   cipher.initEncrypt(key);
   byte[] output= cipher.crypt(data);
   return output;
  }
   catch(KeyException e)
  file://at initencrypt covers both the down one
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }

  catch(NoSuchProviderException e)
  file://RawKeyGenerator
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
  catch(NoSuchAlgorithmException e)
  file://RawKeyGenerator
  file://makekey for SHA-1
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
  catch(SecurityException e)
  file://addProvider
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
 
 }
 
 public static byte[] decrypt(String password, int keySize, byte[] data) throws Exception
    /* the real exceptions
     throws KeyException,
    NoSuchProviderException,
    NoSuchAlgorithmException,
    SecurityException*/
 {
 try
  {
   file://byte[] digestedPassword = makeKey(password,keySize);
  
   Security.addProvider(new cryptix.provider.Cryptix());
   RawKeyGenerator keyGenerator = (RawKeyGenerator) RawKeyGenerator.getInstance(CIPHER,PROVIDER);
   byte[] digestedPassword = makeKey(password,keySize);
   Key key = keyGenerator.generateKey(digestedPassword); 
   Cipher cipher = Cipher.getInstance(CIPHER_ALGO,PROVIDER);
   cipher.initDecrypt(key);
   
   byte[] output = cipher.crypt(data);
   return output;
  }
  catch(KeyException e)
  file://at initencrypt covers both the down one
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }

  catch(NoSuchProviderException e)
  file://RawKeyGenerator
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
  catch(NoSuchAlgorithmException e)
  file://RawKeyGenerator
  file://makekey for SHA-1
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
  catch(SecurityException e)
  file://addProvider
  {
   System.out.println(e);
   byte[] dummy = new byte[1];
   return dummy;
  }
 }
}