use of xades4j.providers.TimeStampTokenDigestException in project xades4j by luisgoncalves.
the class DefaultTimeStampVerificationProvider method verifyToken.
@Override
public Date verifyToken(byte[] timeStampToken, byte[] tsDigestInput) throws TimeStampTokenVerificationException {
TimeStampToken tsToken;
try {
ASN1InputStream asn1is = new ASN1InputStream(timeStampToken);
ContentInfo tsContentInfo = ContentInfo.getInstance(asn1is.readObject());
asn1is.close();
tsToken = new TimeStampToken(tsContentInfo);
} catch (IOException ex) {
throw new TimeStampTokenStructureException("Error parsing encoded token", ex);
} catch (TSPException ex) {
throw new TimeStampTokenStructureException("Invalid token", ex);
}
X509Certificate tsaCert = null;
try {
/* Validate the TSA certificate */
LinkedList<X509Certificate> certs = new LinkedList<X509Certificate>();
for (Object certHolder : tsToken.getCertificates().getMatches(new AllCertificatesSelector())) {
certs.add(this.x509CertificateConverter.getCertificate((X509CertificateHolder) certHolder));
}
ValidationData vData = this.certificateValidationProvider.validate(x509CertSelectorConverter.getCertSelector(tsToken.getSID()), tsToken.getTimeStampInfo().getGenTime(), certs);
tsaCert = vData.getCerts().get(0);
} catch (CertificateException ex) {
throw new TimeStampTokenVerificationException(ex.getMessage(), ex);
} catch (XAdES4jException ex) {
throw new TimeStampTokenTSACertException("cannot validate TSA certificate", ex);
}
try {
tsToken.validate(this.signerInfoVerifierBuilder.build(tsaCert));
} catch (TSPValidationException ex) {
throw new TimeStampTokenSignatureException("Invalid token signature or certificate", ex);
} catch (Exception ex) {
throw new TimeStampTokenVerificationException("Error when verifying the token signature", ex);
}
org.bouncycastle.tsp.TimeStampTokenInfo tsTokenInfo = tsToken.getTimeStampInfo();
try {
String digestAlgUri = uriForDigest(tsTokenInfo.getMessageImprintAlgOID());
MessageDigest md = messageDigestProvider.getEngine(digestAlgUri);
if (!Arrays.equals(md.digest(tsDigestInput), tsTokenInfo.getMessageImprintDigest())) {
throw new TimeStampTokenDigestException();
}
} catch (UnsupportedAlgorithmException ex) {
throw new TimeStampTokenVerificationException("The token's digest algorithm is not supported", ex);
}
return tsTokenInfo.getGenTime();
}
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