Collection c = recipients.getRecipients();
Iterator it = c.iterator();
if (it.hasNext())
{
RecipientInformation recipient = (RecipientInformation)it.next();
assertEquals(recipient.getKeyEncryptionAlgOID(), PKCSObjectIdentifiers.rsaEncryption.getId());
CMSTypedStream recData = recipient.getContentStream(_reciKP.getPrivate(), "BC");
InputStream dataStream = recData.getContentStream();
ByteArrayOutputStream dataOut = new ByteArrayOutputStream();
int len;
byte[] buf = new byte[BUFFER_SIZE];