public void Open()
{
ThrowIfDisposed();
if (!Win32Native.CryptAcquireContext(out handle, ContainerName, ProviderName, ProviderType, Flags))
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
}
internal void DestroyKey(CryptKey key)
{
ThrowIfDisposedOrNotOpen();
if (!Win32Native.CryptDestroyKey(key.Handle))
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
}
private Win32Native.SystemTime ToSystemTime(DateTime dateTime)
{
long fileTime = dateTime.ToFileTime();
var systemTime = new Win32Native.SystemTime();
if (!Win32Native.FileTimeToSystemTime(ref fileTime, systemTime))
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
return(systemTime);
}
protected override void CleanUp(bool viaDispose)
{
if (handle != IntPtr.Zero)
{
if (!Win32Native.CryptReleaseContext(handle, 0))
{
if (viaDispose)
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
}
}
}
public KeyExchangeKey GenerateKeyExchangeKey(bool exportable, int keyBitLength)
{
ThrowIfDisposedOrNotOpen();
uint flags = (exportable ? 1U : 0U) | ((uint)keyBitLength) << 16;
IntPtr keyHandle;
bool result = Win32Native.CryptGenKey(handle, (int)KeyType.Exchange, flags, out keyHandle);
if (!result)
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
return(new KeyExchangeKey(this, keyHandle));
}
public X509Certificate2 CreateSelfSignedCertificate(SelfSignedCertProperties properties)
{
ThrowIfDisposedOrNotOpen();
GenerateKeyExchangeKey(properties.IsPrivateKeyExportable, properties.KeyBitLength);
//GenerateSignatureKey(properties.IsPrivateKeyExportable, properties.KeyBitLength);
byte[] asnName = properties.Name.RawData;
GCHandle asnNameHandle = GCHandle.Alloc(asnName, GCHandleType.Pinned);
var kpi = new Win32Native.CryptKeyProviderInformation
{
ContainerName = this.ContainerName,
KeySpec = (int)KeyType.Exchange,
ProviderType = 1, // default RSA provider
};
IntPtr certContext = Win32Native.CertCreateSelfSignCertificate(
handle,
new Win32Native.CryptoApiBlob(asnName.Length, asnNameHandle.AddrOfPinnedObject()),
0, kpi, IntPtr.Zero,
ToSystemTime(properties.ValidFrom),
ToSystemTime(properties.ValidTo),
IntPtr.Zero);
asnNameHandle.Free();
if (IntPtr.Zero == certContext)
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
X509Certificate2 cert = new X509Certificate2(certContext); // dups the context (increasing it's refcount)
if (!Win32Native.CertFreeCertificateContext(certContext))
{
Win32ErrorHelper.ThrowExceptionIfGetLastErrorIsNotZero();
}
return(cert);
}
