The modules include the bsp design , the drivers of the periphery hardware ( gpio , iic , flash , tuner etc . ) , the mac end drivers ( ethernet , usb , cable ) , the message queue control , the bpi + . in addition , because the pieces of safe protocol for data transmission is blank in the cable network data transmission standard that our country will put out , the author gives a security project for the data transmission on the cable networks that is accord with the security standards of china and uses the chinaese ca certificate and security arithmetics and realizes it in the capinfo cable modem 另外,我國(guó)將要推出的線纜網(wǎng)數(shù)據(jù)傳輸規(guī)范中關(guān)于數(shù)據(jù)傳輸安全部分是個(gè)空白,本文在分析docsis1 . 1中的數(shù)據(jù)傳輸安全協(xié)議bpi +的實(shí)現(xiàn)技術(shù)的基礎(chǔ)上,給出了一種可以滿足中國(guó)國(guó)家相關(guān)安全規(guī)定的cable網(wǎng)數(shù)據(jù)傳輸安全解決方案(應(yīng)用中國(guó)設(shè)計(jì)的數(shù)字證書和安全算法) ,并介紹了在我們研發(fā)的cablemodem中對(duì)此方案的實(shí)現(xiàn)。