Hi everyone,
I was happy signing my small PDF files until "java.lang.OutOfMemoryError"
appeared when I tried to sign a big one :-((... I find a solution in the
forum, which I tried but it was not what I expected :,(.
this code work perfectly for small files...
...
PdfReader reader = new PdfReader(new FileInputStream(SRC));
FileOutputStream fout = new FileOutputStream(DST);
PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setCrypto(key,(java.security.cert.Certificate[]) chain,
null, PdfSignatureAppearance.WINCER_SIGNED);
...
stp.close();
for big files I used this code:
...
PdfReader reader = new PdfReader(new
RandomAccessFileOrArray(SRC, false, true),null);
FileOutputStream fout = new FileOutputStream(DST);
PdfStamper stp = PdfStamper.createSignature(reader, new
BufferedOutputStream(fout), '\0', new File(DST+".temp"), true);
PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setCrypto(key,(java.security.cert.Certificate[]) chain,
null, PdfSignatureAppearance.WINCER_SIGNED);
...
stp.close();
But, when I open the signed file using Adabe reader, the signature panel
doesn't appear.
I tried this for small and big PDF files
small PDF size: 280kb
big PDF size: 67.7mb
Please, help me... thanks in advance,
RobertQ.
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