The Design And Implementation Of PCMCIA Cipher Card Based On High Speed Singlechip

This disquisition root in " Public Meshwork(GPRS/CDMA) Mobile Data Security Connect And Authentication System brought forward by Gold Sheild Office (JlGAB23W013).The purpose is to offer cipher service based on PCMCIA for mobile terminal of IP security connect system.Firstly,it analysed research actuality and function characteristic of the encryption card inside and outside nation,and analysed cipher theory, lucubrated in analysing ways of security initialization and cipher arithmetic realization. and explained PCMCIA standard and speciality.In allusion to function,capability,and security of IP security connect,it put forward a scheme of hardware truss which compose of C8051F122 for master module,SCB2 and RSA chip for arithmetic module,dualport RAM for cushion module,interface chip for interface module. Then distributed its on-chip resources and port of C8051F122,designed the main control flow of C8051F122,gaved material electric principle chart and PCB territory,and gaved material realization of cipher card.In the design and realization of software module, we compile and debug SCM program in the use of development tools based on the function and the composition. The core is C8051F122 command explanation and control module, which is composed of five kinds of RAS, SCB2 arithmetic and function of key command operation. Then according to WDM drive program model, we make a test of the drive in taking advantage of the main technology such as address mapping, communication between application program and drive program, interrupt disposal. The result shows it satisfies the need of Mobile IP Security Connect System.During designing the security of encryption card, desiged protection mechanism and way of store for sensitivity information such as key,certificate.The key management system adopt three layer key mechanism ,gaved material method of key creatation and replacement,key distribute,key store and backup,key protection of delamination,key destroyment. And it made the cipher card much securitier by using parameter initialization, beginning pin setting and pin authentication ,equipment authentication, and hardware validity check up.