How to open password protected pdf using itext

Question

I am using iText library to read PDF files. It's working fine for all the pdf files, except for password protected ones. I used some way by using the overloading constructor of PdfReader class

PdfReader reader = new PdfReader("locked pdf file","password".getBytes());

But it is showing show error like :

Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/asn1/ASN1OctetString

Is there any other to read password protected pdf file? or should I include bouncy castle into my project library?

Solution 1

Starting from iText 2.0.0 you need the BouncyCastle jars. You need to download it from its site. More info can be found from here:

java.lang.NoClassDefFoundError

Solution 2

try {
   PdfReader pdfReader = new PdfReader(String.valueOf(file));
   pdfReader.isEncrypted();
} catch(IOException) {
   e.printStackTrace();
}