I am trying to parse a .cer certificate(find it attached) issued by Symantec with the following code snippet.

FileInputStream fin = new FileInputStream(filePath);

BufferedInputStream bf = new BufferedInputStream(fin);

CertificateFactory cf = null;

cf = CertificateFactory.getInstance("X.509");

 while (bf.available() > 0) {

X509Certificate cert = (X509Certificate) cf.generateCertificate(bf);

}

Eventually I am running into a org.apache.harmony.security.asn1.ASN1Exception: ASN.1 Sequence caused by null pointer exception.

I have disuused the issue with many android developers.They said the reason behind this may be Symantec certificate is not cmpletely valid.As this is a trail certificate it may be something wrong with its signature or Algorithm.They are not very much sure because upon comparing the tree structure (using openSSL) of different valid certificates ,they found its tree structure very different.I would like to know the trial certificate issued by Symantec contain some invalid data like signature,Algorithm or anything else.

But also I was able to parse other certificates(.cer) issued to some authority without any issue.Any help would be gratly appreciated.