DESExample (iText-4.2.0 -- we had to fork it! 4.2.0-pds-1 API)

```
public class DESExample
extends Object
```
DESExample is a simple DES based encryptor/decryptor.
The program is command line driven, with the input and output files specified on the command line.
```
 java org.bouncycastle.crypto.examples.DESExample infile outfile [keyfile]
 
```
A new key is generated for each encryption, if key is not specified, then the example will assume encryption is required, and as output create deskey.dat in the current directory. This key is a hex encoded byte-stream that is used for the decryption. The output file is Hex encoded, 60 characters wide text file.
When encrypting;
- the infile is expected to be a byte stream (text or binary)
- there is no keyfile specified on the input line
When decrypting;
the infile is expected to be the 60 character wide base64 encoded file
the keyfile is expected to be a base64 encoded file
This example shows how to use the light-weight API, DES and the filesystem for message encryption and decryption.

Constructors
Constructor and Description
`DESExample()`
`DESExample(String infile, String outfile, String keyfile, boolean encrypt)`

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`main(String[] args)`

public DESExample(String infile,
                  String outfile,
                  String keyfile,
                  boolean encrypt)

public static void main(String[] args)

Class DESExample