private async Task <string> RequisicaoLTS(string xml, string SOAPAction, string requestUri, string serialCertificado)
{
try
{
var certificado = CertificadoDigital.ObtemCertificadoDigital(serialCertificado);
WebRequestHandler handler = new WebRequestHandler();
handler.ClientCertificates.Add(certificado);
var content = new StringContent(xml, Encoding.UTF8, "text/xml");
using (HttpClient client = new HttpClient(handler))
{
client.DefaultRequestHeaders.Add("SOAPAction", SOAPAction);
using (var resposta = await client.PostAsync(requestUri, content))
{
using (var conteudoResposta = resposta.Content)
{
var resp = await conteudoResposta.ReadAsStringAsync();
return(resp);
}
}
}
}
catch (Exception ex)
{
if (ex.InnerException != null)
{
return(ex.Message + " - " + ex.InnerException.Message);
}
else
{
return(ex.Message);
}
}
}
public string AssinaXML(string aXML, string pUri, string URI, string serialCertificado)
{
// open the XML file
//StreamReader SR = File.OpenText(pArqXMLAssinar);
String vXMLString = aXML;
//SR.Close();
// return parameters
this.vResultado = 0;
this.vResultadoString = "Assinatura realizada com sucesso";
this.vXMLStringAssinado = String.Empty;
try
{
// checking if there is a certified used on xml sign
string _xnome = "";
bool vRetorna;
X509Certificate2 _X509Cert = CertificadoDigital.ObtemCertificadoDigital(serialCertificado);
if (_X509Cert == null)
{
vRetorna = false;
}
else
{
string x;
x = _X509Cert.GetKeyAlgorithm().ToString();
// Create a new XML document.
XmlDocument doc = new XmlDocument();
// Format the document to ignore white spaces.
doc.PreserveWhitespace = false;
// Load the passed XML file using it’s name.
try
{
doc.LoadXml(vXMLString);
// cheching the elemento will be sign
int qtdeRefUri = doc.GetElementsByTagName(pUri).Count;
if (qtdeRefUri == 0)
{
this.vResultado = 4;
this.vResultadoString = "A tag de assinatura " + pUri.Trim() + " não existe";
}
else
{
if (qtdeRefUri > 1)
{
this.vResultado = 5;
this.vResultadoString = "A tag de assinatura " + pUri.Trim() + " não é unica";
}
else
{
try
{
// Create a SignedXml object.
SignedXml signedXml = new SignedXml(doc);
// Add the key to the SignedXml document
signedXml.SigningKey = _X509Cert.PrivateKey;
// Create a reference to be signed
Reference reference = new Reference();
reference.Uri = URI;
/*if (pUri.Trim() != "")
* {
* XmlAttributeCollection _Uri = doc.GetElementsByTagName(pUri).Item(0).Attributes;
*
* foreach (XmlAttribute _atributo in _Uri)
* {
* if (_atributo.Name == "Id")
* reference.Uri = "#" + _atributo.InnerText;
* }
* }
* else
* {
* reference.Uri = "";
* }*/
// Add an enveloped transformation to the reference.
XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform();
reference.AddTransform(env);
XmlDsigC14NTransform c14 = new XmlDsigC14NTransform();
reference.AddTransform(c14);
// Add the reference to the SignedXml object.
signedXml.AddReference(reference);
// Create a new KeyInfo object
KeyInfo keyInfo = new KeyInfo();
// Load the certificate into a KeyInfoX509Data object
// and add it to the KeyInfo object.
keyInfo.AddClause(new KeyInfoX509Data(_X509Cert));
// Add the KeyInfo object to the SignedXml object.
signedXml.KeyInfo = keyInfo;
signedXml.ComputeSignature();
// Get the XML representation of the signature and save
// it to an XmlElement object.
XmlElement xmlDigitalSignature = signedXml.GetXml();
// save element on XML
doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, true));
XmlDocument XMLDoc = new XmlDocument();
XMLDoc.PreserveWhitespace = false;
XMLDoc = doc;
// XML document already signed
vXMLStringAssinado = XMLDoc.OuterXml;
}
catch (Exception caught)
{
this.vResultado = 6;
this.vResultadoString = "Erro ao assinar o documento - " + caught.Message;
}
}
}
}
catch (Exception caught)
{
this.vResultado = 3;
this.vResultadoString = "XML mal formado - " + caught.Message;
}
}
}
catch (Exception caught)
{
this.vResultado = 1;
this.vResultadoString = "Problema ao acessar o certificado digital" + caught.Message;
}
return(vXMLStringAssinado);
}