/// <summary>
/// Signs the CDA Package and creates the signature document.
/// </summary>
/// <param name="package">A CDAPackageBase instance containing the root document to sign.</param>
/// <param name="signingCert">The certificate used to sign the root document.</param>
/// <returns>Signature of the root document.</returns>
private static byte[] CreateSignature(CDAPackage package, X509Certificate2 signingCert)
{
package.SigningTime = DateTime.Now.ToUniversalTime();
byte[] rootDocumentContent = package.CDADocumentRoot.FileContent;
byte[] hash = CalculateSHA1(rootDocumentContent);
var manifest = new ManifestType();
manifest.Reference = new ReferenceType[]
{
new ReferenceType()
{
URI = package.CDADocumentRoot.FileName,
DigestMethod = new DigestMethodType()
{
Algorithm = SignedXml.XmlDsigSHA1Url
},
DigestValue = hash
}
};
var approver = new ApproverType();
approver.personId = package.Approver.PersonId.ToString();
approver.personName = new PersonNameType();
approver.personName.familyName = package.Approver.PersonFamilyName;
if (package.Approver.PersonTitles != null)
{
approver.personName.nameTitle = package.Approver.PersonTitles.ToArray();
}
if (package.Approver.PersonGivenNames != null)
{
approver.personName.givenName = package.Approver.PersonGivenNames.ToArray();
}
if (package.Approver.PersonNameSuffixes != null)
{
approver.personName.nameSuffix = package.Approver.PersonNameSuffixes.ToArray();
}
var eSignature = new eSignatureType();
eSignature.Manifest = manifest;
eSignature.approver = approver;
eSignature.signingTime = package.SigningTime.Value;
XmlDocument eSignatureXml = eSignature.SerializeToXml();
ISignedContainerProfileService signedContainerService = XspFactory.Instance.GetSignedContainerProfileService(XspVersion.V_2010);
XmlDocument signedDoc = signedContainerService.Create(eSignatureXml, signingCert);
var ms = new MemoryStream();
signedDoc.Save(ms);
return(ms.ToArray());
}
/// <summary>
/// Sign an XML document according to the XSPP.
/// </summary>
/// <param name="document">The XML document to be signed.</param>
/// <param name="signingCert">The certificate to sign the XML document with.</param>
/// <returns>The signed XML document.</returns>
public static XmlDocument XspSign(this XmlDocument document, X509Certificate2 signingCert)
{
ISignedContainerProfileService signedContainerService = XspFactory.Instance.GetSignedContainerProfileService(XspVersion.V_2010);
return(signedContainerService.Create(document, signingCert));
}