public void setRecipients(byte[][] recipients) throws IOException
{
COSArray array = new COSArray();
for(int i=0; i<recipients.length; i++)
{
COSString recip = new COSString();
recip.append(recipients[i]);
recip.setForceLiteralForm(true);
array.add(recip);
}
encryptionDictionary.setItem(COSName.getPDFName("Recipients"), array);
}