Hello,
I have a PDF file has been modified after the signature;
It's on the link mod.pdf <http://183.129.200.98:8020/download/mod.pdf>
I got invalid verify use adobe reader(It's right). But,I got valid verify
use itextpdf(java) or itextsharp(c#).
I tried to use the version 5.4.2 and 5.4.3 and 5.3.0 ,I got same result.
In java ,used itextpdf5.4.2 and BouncyCastle 1.49
In c#,used itextsharp5.4.2
Here is my c# code:
PdfReader reader = new PdfReader(filename);
PdfPKCS7 pkcs = reader.AcroFields.VerifySignature("sjensign");
if (pkcs.Verify()){
MessageBox.Show("It's OK");
}else{
MessageBox.Show("It's Modified");
}
Is this a bug about itext verify signature?
Best regards,
Ahwa
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