Java Code Examples for org.apache.pdfbox.cos.COSString#getBytes()

/**
 * This will decrypt a string.
 *
 * @param string the string to decrypt.
 * @param objNum The object number.
 * @param genNum The object generation number.
 *
 * @throws IOException If an error occurs writing the new string.
 */
private void decryptString(COSString string, long objNum, long genNum) throws IOException
{
	// String encrypted with identity filter
	if (COSName.IDENTITY.equals(stringFilterName))
	{
        return;
	}
	
    ByteArrayInputStream data = new ByteArrayInputStream(string.getBytes());
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    try
    {
        encryptData(objNum, genNum, data, outputStream, true /* decrypt */);
        string.setValue(outputStream.toByteArray());
    }
    catch (IOException ex)
    {
        LOG.error("Failed to decrypt COSString of length " + string.getBytes().length + 
                " in object " + objNum + ": " + ex.getMessage());
    }
}
 

private byte[] getDocumentIDBytes(COSArray documentIDArray)
{
    //some documents may not have document id, see
    //test\encryption\encrypted_doc_no_id.pdf
    byte[] documentIDBytes;
    if( documentIDArray != null && documentIDArray.size() >= 1 )
    {
        COSString id = (COSString)documentIDArray.getObject( 0 );
        documentIDBytes = id.getBytes();
    }
    else
    {
        documentIDBytes = new byte[0];
    }
    return documentIDBytes;
}
 

/**
 * This will get the O entry in the standard encryption dictionary.
 *
 * @return A 32 byte array or null if there is no owner key.
 *
 * @throws IOException If there is an error accessing the data.
 */
public byte[] getOwnerKey() throws IOException
{
    byte[] o = null;
    COSString owner = (COSString) dictionary.getDictionaryObject( COSName.O );
    if( owner != null )
    {
        o = owner.getBytes();
    }
    return o;
}
 

/**
 * This will get the U entry in the standard encryption dictionary.
 *
 * @return A 32 byte array or null if there is no user key.
 *
 * @throws IOException If there is an error accessing the data.
 */
public byte[] getUserKey() throws IOException
{
    byte[] u = null;
    COSString user = (COSString) dictionary.getDictionaryObject( COSName.U );
    if( user != null )
    {
        u = user.getBytes();
    }
    return u;
}
 

/**
 * This will get the OE entry in the standard encryption dictionary.
 *
 * @return A 32 byte array or null if there is no owner encryption key.
 *
 * @throws IOException If there is an error accessing the data.
 */
public byte[] getOwnerEncryptionKey() throws IOException
{
    byte[] oe = null;
    COSString ownerEncryptionKey = (COSString)dictionary.getDictionaryObject( COSName.OE );
    if( ownerEncryptionKey != null )
    {
        oe = ownerEncryptionKey.getBytes();
    }
    return oe;
}
 

/**
 * This will get the UE entry in the standard encryption dictionary.
 *
 * @return A 32 byte array or null if there is no user encryption key.
 *
 * @throws IOException If there is an error accessing the data.
 */
public byte[] getUserEncryptionKey() throws IOException
{
    byte[] ue = null;
    COSString userEncryptionKey = (COSString)dictionary.getDictionaryObject( COSName.UE );
    if( userEncryptionKey != null )
    {
        ue = userEncryptionKey.getBytes();
    }
    return ue;
}
 

/**
 * Get the Perms entry in the encryption dictionary.
 *
 * @return A 16 byte array or null if there is no Perms entry.
 *
 * @throws IOException If there is an error accessing the data.
 */
public byte[] getPerms() throws IOException
{
    byte[] perms = null;
    COSString permsCosString = (COSString)dictionary.getDictionaryObject( COSName.PERMS );
    if( permsCosString != null )
    {
        perms = permsCosString.getBytes();
    }
    return perms;
}
 

/**
 * Returns the Panose entry of the Style dictionary, if any.
 *
 * @return A Panose wrapper object.
 */
public PDPanose getPanose()
{
    COSDictionary style = (COSDictionary)dic.getDictionaryObject(COSName.STYLE);
    if (style != null)
    {
        COSString panose = (COSString)style.getDictionaryObject(COSName.PANOSE);
        byte[] bytes = panose.getBytes();
        return new PDPanose(bytes);
    }
    return null;
}
 

/**
 * This will encrypt a string.
 *
 * @param string the string to encrypt.
 * @param objNum The object number.
 * @param genNum The object generation number.
 *
 * @throws IOException If an error occurs writing the new string.
 */
public void encryptString(COSString string, long objNum, int genNum) throws IOException
{
    ByteArrayInputStream data = new ByteArrayInputStream(string.getBytes());
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    encryptData(objNum, genNum, data, buffer, false /* encrypt */);
    string.setValue(buffer.toByteArray());
}