extern static bool PFXExportCertStoreEx(
CertificateStoreHandle hStore,
IntPtr pPFX,
//IntPtr szPassword,
string password,
IntPtr pvReserved,
PfxExportFlags dwFlags);
private void Export()
{
using (CertificateStoreHandle handle = CertOpenStore(new IntPtr(2), 0, IntPtr.Zero, 0, IntPtr.Zero))
{
StoreCertificateHandle handle2;
if (!CertAddCertificateContextToStore(handle, this.cert, AddDisposition.ReplaceExisting, out handle2))
{
int error = Marshal.GetLastWin32Error();
Utility.CloseInvalidOutSafeHandle(handle2);
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(new Win32Exception(error));
}
using (handle2)
{
CryptoApiBlob blob = new CryptoApiBlob();
CryptoApiBlob.InteropHelper memoryForPinning = blob.GetMemoryForPinning();
GCHandle handle3 = GCHandle.Alloc(memoryForPinning, GCHandleType.Pinned);
try
{
if (!PFXExportCertStoreEx(handle, handle3.AddrOfPinnedObject(), this.password, IntPtr.Zero, PfxExportFlags.ExportPrivateKeys | PfxExportFlags.ReportNotAbleToExportPrivateKey | PfxExportFlags.ReportNoPrivateKey))
{
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(PeerExceptionHelper.GetLastException());
}
int size = memoryForPinning.size;
handle3.Free();
blob.AllocateBlob(size);
handle3 = GCHandle.Alloc(blob.GetMemoryForPinning(), GCHandleType.Pinned);
if (!PFXExportCertStoreEx(handle, handle3.AddrOfPinnedObject(), this.password, IntPtr.Zero, PfxExportFlags.ExportPrivateKeys | PfxExportFlags.ReportNotAbleToExportPrivateKey | PfxExportFlags.ReportNoPrivateKey))
{
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(PeerExceptionHelper.GetLastException());
}
this.exportedBytes = blob.GetBytes();
}
finally
{
handle3.Free();
if (blob != null)
{
blob.Dispose();
}
}
}
}
}
extern static bool PFXExportCertStoreEx(
CertificateStoreHandle hStore,
IntPtr pPFX,
//IntPtr szPassword,
string password,
IntPtr pvReserved,
PfxExportFlags dwFlags);
extern static bool CertAddCertificateContextToStore(
CertificateStoreHandle hCertStore,
CertificateHandle pCertContext,
AddDisposition dwAddDisposition,
[Out]out StoreCertificateHandle ppStoreContext);
extern static bool CertAddCertificateContextToStore(
CertificateStoreHandle hCertStore,
CertificateHandle pCertContext,
AddDisposition dwAddDisposition,
[Out] out StoreCertificateHandle ppStoreContext);
void Export()
{
Fx.Assert(this.exportedBytes == null, "calling Export twice!!");
// create a temporary store to export
using (CertificateStoreHandle store = CertOpenStore(new IntPtr(CERT_STORE_PROV_MEMORY),
0,
IntPtr.Zero,
0,
IntPtr.Zero))
{
// add the certificate to the store
StoreCertificateHandle addedCert;
if (!CertAddCertificateContextToStore(store,
cert,
AddDisposition.ReplaceExisting,
out addedCert))
{
int error = Marshal.GetLastWin32Error();
Utility.CloseInvalidOutSafeHandle(addedCert);
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(new Win32Exception(error));
}
using (addedCert)
{
// Translate to a PFX
CryptoApiBlob pfxBlob = new CryptoApiBlob();
CryptoApiBlob.InteropHelper blob = pfxBlob.GetMemoryForPinning();
GCHandle pfxHandle = GCHandle.Alloc(blob, GCHandleType.Pinned);
try
{
// first figure out the storage space necessary
bool result = PFXExportCertStoreEx(store,
pfxHandle.AddrOfPinnedObject(),
password,
IntPtr.Zero,
PfxExportFlags.ExportPrivateKeys |
PfxExportFlags.ReportNoPrivateKey |
PfxExportFlags.ReportNotAbleToExportPrivateKey);
if (!result)
{
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(PeerExceptionHelper.GetLastException());
}
int storageSize = blob.size;
pfxHandle.Free();
pfxBlob.AllocateBlob(storageSize);
blob = pfxBlob.GetMemoryForPinning();
pfxHandle = GCHandle.Alloc(blob, GCHandleType.Pinned);
// now do the translation
if (!PFXExportCertStoreEx(store,
pfxHandle.AddrOfPinnedObject(),
password,
IntPtr.Zero,
PfxExportFlags.ExportPrivateKeys |
PfxExportFlags.ReportNoPrivateKey |
PfxExportFlags.ReportNotAbleToExportPrivateKey))
{
PeerExceptionHelper.ThrowInvalidOperation_PeerCertGenFailure(PeerExceptionHelper.GetLastException());
}
exportedBytes = pfxBlob.GetBytes();
}
finally
{
if (pfxHandle != null)
{
pfxHandle.Free();
}
if (pfxBlob != null)
{
pfxBlob.Dispose();
}
}
}
}
}
