/// <summary>
/// Open an existing RSA CSP
/// </summary>
/// <param name="providerName">Name of the provider</param>
/// <param name="containerName">Name of container</param>
/// <exception cref="Win32Exception"/>
/// <returns>Handle to the crypt provider</returns>
private CryptoApiMethods.SafeCryptProviderHandle OpenRSAProvider(string providerName, string containerName)
{
CryptoApiMethods.SafeCryptProviderHandle hCryptProv;
if (!CryptoApiMethods.CryptAcquireContext(out hCryptProv, containerName, providerName, CryptoApiMethods.Providers.PROV_RSA_FULL, 0))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
if (hCryptProv == null)
{
throw new CryptographicException();
}
return(hCryptProv);
}
