//Encrypt Procedure
public void EncryptFile(string owner, Collection <UserRights> listOfRights, string filePath)
{
string fileName;
string pathToFile;
TemplateIssuer issuer;
SafeInformationProtectionKeyHandle keyhandle;
SafeInformationProtectionLicenseHandle licenseHandle;
fileName = Path.GetFileName(filePath);
pathToFile = Path.GetDirectoryName(filePath);
issuer = new TemplateIssuer(null, owner, true);
licenseHandle = SafeNativeMethods.IpcCreateLicenseFromScratch(issuer);
SafeNativeMethods.IpcSetLicenseOwner(licenseHandle, owner);
SafeNativeMethods.IpcSetLicenseUserRightsList(licenseHandle, listOfRights);
byte[] license = SafeNativeMethods.IpcSerializeLicense(licenseHandle, 0, true, false, true, null, out keyhandle);
Collection <UserRights> rights = SafeNativeMethods.IpcGetSerializedLicenseUserRightsList(license, keyhandle);
SafeFileApiNativeMethods.IpcfEncryptFile(filePath, licenseHandle, SafeFileApiNativeMethods.EncryptFlags.IPCF_EF_FLAG_DEFAULT, true, false, true, null, pathToFile);
}
public void EncryptFile(string filePath, string templateId)
{
string fileName;
string pathToFile;
SafeInformationProtectionKeyHandle keyhandle;
SafeInformationProtectionLicenseHandle licenseHandle;
fileName = Path.GetFileName(filePath);
pathToFile = Path.GetDirectoryName(filePath);
licenseHandle = SafeNativeMethods.IpcCreateLicenseFromTemplateId(templateId);
byte[] license = SafeNativeMethods.IpcSerializeLicense(licenseHandle, 0, true, false, true, null, out keyhandle);
Collection <UserRights> rights = SafeNativeMethods.IpcGetSerializedLicenseUserRightsList(license, keyhandle);
SafeFileApiNativeMethods.IpcfEncryptFile(filePath, licenseHandle, SafeFileApiNativeMethods.EncryptFlags.IPCF_EF_FLAG_DEFAULT, false, true, true, null, pathToFile);
}