internal static extern bool CryptMsgControl( SafeCryptMsgHandle hCryptMsg, int dwFlags, MsgControlType dwCtrlType, [In] ref CMSG_CTRL_DECRYPT_PARA pvCtrlPara);
internal static partial bool CryptMsgControl( SafeCryptMsgHandle hCryptMsg, int dwFlags, MsgControlType dwCtrlType, ref CMSG_CTRL_KEY_AGREE_DECRYPT_PARA pvCtrlPara);
internal static extern bool CryptMsgControl(SafeCryptMsgHandle hCryptMsg, int dwFlags, MsgControlType dwCtrlType, [In] ref CMSG_CTRL_KEY_AGREE_DECRYPT_PARA pvCtrlPara);