internal static NCryptProviderName[] EnumerateStorageProviders()
{
uint providerCount = 0;
SafeNCryptBuffer providerBuffer = null;
try
{
// Ask CNG for the raw list of providers
ErrorCode enumStatus = UnsafeNativeMethods.NCryptEnumStorageProviders(out providerCount,
out providerBuffer,
0);
if (enumStatus != ErrorCode.Success)
{
throw new CryptographicException((int)enumStatus);
}
// Copy the provider names into a managed array
NCryptProviderName[] providers = new NCryptProviderName[providerCount];
for (uint i = 0; i < providers.Length; ++i)
{
providers[i] = providerBuffer.ReadArray <NCryptProviderName>(i);
}
return(providers);
}
finally
{
if (providerBuffer != null)
{
providerBuffer.Dispose();
}
}
}
public static String[] EnumProviders()
{
UInt32 dwProviderCount = 0;
IntPtr providerNames = IntPtr.Zero;
if (NCryptEnumStorageProviders(ref dwProviderCount, ref providerNames, 0) != ERROR_SUCCESS)
{
throw new Win32Exception("NCryptEnumStorageProviders failed.");
}
String[] providerNamesArray = new String[dwProviderCount];
for (UInt32 i = 0; i < dwProviderCount; i++)
{
NCryptProviderName providerName = (NCryptProviderName)Marshal.PtrToStructure(new IntPtr(providerNames.ToInt64() + Marshal.SizeOf(typeof(NCryptProviderName)) * i), typeof(NCryptProviderName));
providerNamesArray[i] = providerName.pszName;
}
if (NCryptFreeBuffer(providerNames) != ERROR_SUCCESS)
{
throw new Win32Exception("NCryptFreeBuffer failed.");
}
return(providerNamesArray);
}
public static extern unsafe SECURITY_STATUS NCryptEnumStorageProviders(
out int pdwProviderCount,
out NCryptProviderName* ppProviderList,
NCryptEnumStorageProvidersFlags dwFlags = NCryptEnumStorageProvidersFlags.None);