public CVCertificate(byte[] in) throws IllegalArgumentException, IOException {
ASN1StreamParser asn1Parser = new ASN1StreamParser(in);
DERApplicationSpecific cvcert = (DERApplicationSpecific) asn1Parser.readObject();
if (cvcert.getApplicationTag() != 0x21)
throw new IllegalArgumentException("Can't find a CV Certificate");
ASN1Sequence derCert =
(ASN1Sequence) cvcert.getObject(BERTags.SEQUENCE); // Das CV Cerificate ist eine Sequence
DERApplicationSpecific body =
(DERApplicationSpecific)
derCert.getObjectAt(0); // Das erste Objekt des Certificates ist der Cert-Body
if (body.getApplicationTag() != 0x4E)
throw new IllegalArgumentException("Can't find a Body in the CV Certificate");
certBody = new CVCertBody(body);
DERApplicationSpecific signature =
(DERApplicationSpecific)
derCert.getObjectAt(1); // Das zweite Objekt des Certificates ist die Signatur
if (signature.getApplicationTag() != 0x37)
throw new IllegalArgumentException("Can't find a Signature in the CV Certificate");
certSignature = new CVCertSignature(signature.getContents());
}
/**
* Sets the values of the certificate (body and signature).
*
* @param appSpe is a ASN1ApplicationSpecific object containing body and signature.
* @throws IOException if tags or value are incorrect.
*/
private void setPrivateData(ASN1ApplicationSpecific appSpe) throws IOException {
valid = 0;
if (appSpe.getApplicationTag() == EACTags.CARDHOLDER_CERTIFICATE) {
ASN1InputStream content = new ASN1InputStream(appSpe.getContents());
ASN1Primitive tmpObj;
while ((tmpObj = content.readObject()) != null) {
DERApplicationSpecific aSpe;
if (tmpObj instanceof DERApplicationSpecific) {
aSpe = (DERApplicationSpecific) tmpObj;
switch (aSpe.getApplicationTag()) {
case EACTags.CERTIFICATE_CONTENT_TEMPLATE:
certificateBody = CertificateBody.getInstance(aSpe);
valid |= bodyValid;
break;
case EACTags.STATIC_INTERNAL_AUTHENTIFICATION_ONE_STEP:
signature = aSpe.getContents();
valid |= signValid;
break;
default:
throw new IOException(
"Invalid tag, not an Iso7816CertificateStructure :" + aSpe.getApplicationTag());
}
} else {
throw new IOException("Invalid Object, not an Iso7816CertificateStructure");
}
}
content.close();
} else {
throw new IOException("not a CARDHOLDER_CERTIFICATE :" + appSpe.getApplicationTag());
}
if (valid != (signValid | bodyValid)) {
throw new IOException("invalid CARDHOLDER_CERTIFICATE :" + appSpe.getApplicationTag());
}
}