public static extern bool CryptImportKey(SafeCspHandle hProv, [MarshalAs(UnmanagedType.LPArray)] byte[] pbData, int dwDataLen, SafeCapiKeyHandle hPubKey, CapiNative.KeyFlags dwFlags, out SafeCapiKeyHandle phKey);
public static extern bool CryptGenKey(SafeCspHandle hProv, CapiNative.AlgorithmId Algid, CapiNative.KeyFlags dwFlags, out SafeCapiKeyHandle phKey);