摘要
数据加密标准DES是对称密码体系中应用最广泛的算法之一。为了满足信息安全和加密型数据采集系统的密钥的有效存储,设计基于TMS320VC5410系列DSP和SLE5542型IC卡的DES加密系统。采用McBSP1接口与CD4066开关电源设计了IC卡读卡器,并通过CCS开发环境编写、下载和调试应用程序,完成了DSP与SLE5542卡之间的ISO7816-3通信协议。另外通过McBSP0连接MAX232电平转换器,以软件形式实现了目标板从RS232接口接收来自PC机的明文数据,系统对其进行DES加密后输出密文。实验结果表明系统可以正确读取IC卡中的64位密钥,完成数据加密后准确地显示在接收端,符合设计要求。
As symmetric cipher system, DES（Data Encryption Standard）is one of the most widely used algorithms. In order to meet the needs of information security for encryption-based data acquisition system, DES encryption system was designed based on TMS320VC5410 series DSP and SLE5542 IC card. IC card reader was designed by using McBSP1 interface and CD4066 switching power supply. The syetem can write, download, and debug application on CCS development environ- ment and the ISO7816-3 communication protocol between DSP and SLE5542 card was realized. McBSP0 was connected to MAX232 level converter core. So the target board can receive plaintext from PC through software. Then the ciphertext is output after DES encryption. Test results show that the system can read 64-bit key in the IC card correctly and display the ciphertext accurately on the receiving end after completion of data encryption, which meets the design requirements.
出处
《电子设计工程》
2010年第9期177-181,共5页
Electronic Design Engineering
作者简介
於辉（1984-），男，山东济宁人，硕士研究生。研究方向：数字通信技术。
