public KnownTsaResponsePkiStatus ParseTsaResponse()
{
Asn1Parser asn1Parser;
XmlNode pkiStatusXmlNode;
string pkiStatusValue;
XmlNode timeStampXmlNode;
KnownTsaResponsePkiStatus retVal;
retVal = KnownTsaResponsePkiStatus.Waiting;
if (this.rawTsaResponse == null)
{
throw new Exception("There is no response to parse, call SendTsaWebRequest first");
}
asn1Parser = new Asn1Parser();
asn1Parser.ParseAsn1(this.rawTsaResponse);
pkiStatusXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/Universal_Primitive_Integer");
if (pkiStatusXmlNode != null)
{
pkiStatusValue = pkiStatusXmlNode.Attributes["Value"].Value;
retVal = (KnownTsaResponsePkiStatus)(int.Parse(pkiStatusValue));
}
else
{
throw new Exception("Parse error TSA response: can't find PkiStatus");
}
if (retVal == KnownTsaResponsePkiStatus.Granted)
{
//timeStampXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/ContextSpecific_Constructed_A0/RawData[../../Universal_Primitive_Oid/@Value=\"1.2.840.113549.1.7.2\"]");
timeStampXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/RawData[../Universal_Primitive_Oid/@Value=\"1.2.840.113549.1.7.2\"]");
if (timeStampXmlNode != null)
{
this.tsaTimeStamp = Convert.FromBase64String(timeStampXmlNode.InnerText);
}
else
{
throw new Exception("Parse error TSA response: can't find TSA TimeStamp (OID=1.2.840.113549.1.7.2)");
}
}
return(retVal);
}
private void injectXadesCInformationButton_Click(object sender, System.EventArgs e)
{
UnsignedProperties unsignedProperties = null;
Cert chainCert = null;
SHA1 sha1Managed;
byte[] crlDigest;
CRLRef incCRLRef;
if (this.includeCertificateChainCheckBox.Checked)
{
if (this.Chain != null)
{
unsignedProperties = this.xadesSignedXml.UnsignedProperties;
unsignedProperties.UnsignedSignatureProperties.CompleteCertificateRefs = new CompleteCertificateRefs();
foreach (X509ChainElement element in this.Chain.ChainElements)
{
chainCert = new Cert();
chainCert.IssuerSerial.X509IssuerName = element.Certificate.IssuerName.Name;
chainCert.IssuerSerial.X509SerialNumber = element.Certificate.SerialNumber;
chainCert.CertDigest.DigestMethod.Algorithm = SignedXml.XmlDsigSHA1Url;
chainCert.CertDigest.DigestValue = this.Certificate.GetCertHash();
unsignedProperties.UnsignedSignatureProperties.CompleteCertificateRefs.Id = this.completeCertificateRefsTextBox.Text;
unsignedProperties.UnsignedSignatureProperties.CompleteCertificateRefs.CertRefs.CertCollection.Add(chainCert);
}
this.xadesSignedXml.UnsignedProperties = unsignedProperties;
}
else
{
MessageBox.Show("The certificate chain was not accepted, can't add certificate chain information to CompleteCertificateRefs element");
}
}
if (this.includeCrlCheckBox.Checked)
{ //In this sample we will load the CRL from file on a CRL archive.
Stream crlStream = File.OpenRead(this.crlFileTextBox.Text);
sha1Managed = new SHA1Managed();
crlDigest = sha1Managed.ComputeHash(crlStream);
crlStream.Close();
incCRLRef = new CRLRef();
incCRLRef.CertDigest.DigestMethod.Algorithm = SignedXml.XmlDsigSHA1Url;
incCRLRef.CertDigest.DigestValue = crlDigest;
incCRLRef.CRLIdentifier.UriAttribute = this.crlFileTextBox.Text;
Asn1Parser asn1Parser;
asn1Parser = new Asn1Parser();
asn1Parser.ParseAsn1(this.GetFileBytes(this.crlFileTextBox.Text));
XmlNode searchXmlNode;
searchXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/Universal_Constructed_Sequence/Universal_Constructed_Set/Universal_Constructed_Sequence/Universal_Primitive_PrintableString");
if (searchXmlNode != null)
{
incCRLRef.CRLIdentifier.Issuer = searchXmlNode.Attributes["Value"].Value;
}
else
{
throw new Exception("Parse error TSA response: can't find Issuer in CRL");
}
searchXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/Universal_Primitive_UtcTime");
if (searchXmlNode != null)
{
incCRLRef.CRLIdentifier.IssueTime = DateTime.Parse(searchXmlNode.Attributes["Value"].Value);
}
else
{
throw new Exception("Parse error TSA response: can't find IssueTime in CRL");
}
unsignedProperties = this.xadesSignedXml.UnsignedProperties;
unsignedProperties.UnsignedSignatureProperties.CompleteRevocationRefs = new CompleteRevocationRefs();
unsignedProperties.UnsignedSignatureProperties.CompleteRevocationRefs.Id = this.completeRevocationRefsIdTextBox.Text;
unsignedProperties.UnsignedSignatureProperties.CompleteRevocationRefs.CRLRefs.CRLRefCollection.Add(incCRLRef);
this.xadesSignedXml.UnsignedProperties = unsignedProperties;
}
if (this.includeCrlCheckBox.Checked || this.includeCertificateChainCheckBox.Checked)
{
this.ShowSignature();
}
}
public KnownTsaResponsePkiStatus ParseTsaResponse()
{
Asn1Parser asn1Parser;
XmlNode pkiStatusXmlNode;
string pkiStatusValue;
XmlNode timeStampXmlNode;
KnownTsaResponsePkiStatus retVal;
retVal = KnownTsaResponsePkiStatus.Waiting;
if (this.rawTsaResponse == null)
{
throw new Exception("There is no response to parse, call SendTsaWebRequest first");
}
asn1Parser = new Asn1Parser();
asn1Parser.ParseAsn1(this.rawTsaResponse);
pkiStatusXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/Universal_Primitive_Integer");
if (pkiStatusXmlNode != null)
{
pkiStatusValue = pkiStatusXmlNode.Attributes["Value"].Value;
retVal = (KnownTsaResponsePkiStatus)(int.Parse(pkiStatusValue));
}
else
{
throw new Exception("Parse error TSA response: can't find PkiStatus");
}
if (retVal == KnownTsaResponsePkiStatus.Granted)
{
//timeStampXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/ContextSpecific_Constructed_A0/RawData[../../Universal_Primitive_Oid/@Value=\"1.2.840.113549.1.7.2\"]");
timeStampXmlNode = asn1Parser.ParseTree.SelectSingleNode("//Universal_Constructed_Sequence/Universal_Constructed_Sequence/RawData[../Universal_Primitive_Oid/@Value=\"1.2.840.113549.1.7.2\"]");
if (timeStampXmlNode != null)
{
this.tsaTimeStamp = Convert.FromBase64String(timeStampXmlNode.InnerText);
}
else
{
throw new Exception("Parse error TSA response: can't find TSA TimeStamp (OID=1.2.840.113549.1.7.2)");
}
}
return retVal;
}