Duplicate Java's PBEWithMD5AndDES

Demonstrate's how to duplicate Java's PBEWithMD5AndDES.

Download Chilkat Crypt ActiveX

Dim crypt As New ChilkatCrypt2

Dim success As Long
success = crypt.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    MsgBox crypt.LastErrorText
    Exit Sub
End If

crypt.CryptAlgorithm = "pbes1"
crypt.PbesPassword = "secret"

crypt.PbesAlgorithm = "des"
crypt.KeyLength = 64

'  The salt for PBKDF1 is always 8 bytes:
crypt.SetEncodedSalt "C773218C7EC8EE99","hex"

crypt.IterationCount = 20

'  A hash algorithm needs to be set for PBES1:
crypt.HashAlgorithm = "md5"

'  Indicate that the encrypted bytes should be returned
'  as a hex string:
crypt.EncodingMode = "hex"

Dim plainText As String
plainText = "This is another example"

Dim encryptedText As String
encryptedText = crypt.EncryptStringENC(plainText)

'  The output should be: E729548140D20B14E9140F832A7E980AA449A84B295C75CE
Text1.Text = Text1.Text & encryptedText & vbCrLf

'  Now decrypt:
Dim decryptedText As String
decryptedText = crypt.DecryptStringENC(encryptedText)

Text1.Text = Text1.Text & decryptedText & vbCrLf

'  ----------------------------------------------------------------
'  ----------------------------------------------------------------
'  
The code above duplicates this Java JCE example:

	public static void main(String args[]) throws Exception
	{
	    PBEKeySpec pbeKeySpec;
	    PBEParameterSpec pbeParamSpec;
	    SecretKeyFactory keyFac;

	    // Salt
	    byte[] salt = {
		(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
		(byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
	    };

	    // Iteration count
	    int count = 20;

	    // Create PBE parameter set
	    pbeParamSpec = new PBEParameterSpec(salt, count);

	    String password = "secret";
	    pbeKeySpec = new PBEKeySpec(password.toCharArray());
	    keyFac = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
	    SecretKey pbeKey = keyFac.generateSecret(pbeKeySpec);

	    // Create PBE Cipher
	    Cipher pbeCipher = Cipher.getInstance("PBEWithMD5AndDES");

	    // Initialize PBE Cipher with key and parameters
	    pbeCipher.init(Cipher.ENCRYPT_MODE, pbeKey, pbeParamSpec);

	    // Our cleartext
	    byte[] cleartext = "This is another example".getBytes();
	    
	    // Encrypt the cleartext
	    byte[] ciphertext = pbeCipher.doFinal(cleartext);
	    
     	System.out.print("ciphertext: ");
        System.out.println(toHex(ciphertext));
	}