Tilman Hausherr created PDFBOX-4662:
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Summary: ClassCastException: org.bouncycastle.asn1.DLTaggedObject
cannot be cast to org.bouncycastle.asn1.DERTaggedObject
Key: PDFBOX-4662
URL: https://issues.apache.org/jira/browse/PDFBOX-4662
Project: PDFBox
Issue Type: Bug
Components: Crypto
Affects Versions: 2.0.17
Reporter: Tilman Hausherr
Assignee: Tilman Hausherr
Fix For: 2.0.18, 3.0.0 PDFBox
I get this with the attached file:
{noformat}
Exception in thread "main" java.lang.ClassCastException:
org.bouncycastle.asn1.DLTaggedObject cannot be cast to
org.bouncycastle.asn1.DERTaggedObject
at
org.apache.pdfbox.examples.signature.cert.CertificateVerifier.extractOCSPURL(CertificateVerifier.java:397)
at
org.apache.pdfbox.examples.signature.cert.CertificateVerifier.checkRevocations(CertificateVerifier.java:197)
at
org.apache.pdfbox.examples.signature.cert.CertificateVerifier.verifyCertificate(CertificateVerifier.java:151)
at
org.apache.pdfbox.examples.signature.ShowSignature.verifyCertificateChain(ShowSignature.java:901)
{noformat}
Solution: replace DERTaggedObject with ASN1TaggedObject. The exception is
related to a change in BC. The latest 2.0 branch doesn't have the problem, but
it uses 1.60 while the trunk uses 1.63. The error doesn't happen with 1.62. The
changes doesn't break the 2.0 branch so I'll change it there too, to avoid
trouble for people who use 1.63 with the code. My impression of looking at the
source code is that the difference between the two classes is in encoding,
which we don't use.
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