CN201917914U

CN201917914U - Embedded encryption chip

Info

Publication number: CN201917914U
Application number: CN2011200377103U
Authority: CN
Inventors: 马驹; 曹铁
Original assignee: LINKSAFE TECHNOLOGY (BEIJING) Co Ltd
Current assignee: LINKSAFE TECHNOLOGY (BEIJING) Co Ltd
Priority date: 2011-02-14
Filing date: 2011-02-14
Publication date: 2011-08-03
Anticipated expiration: 2021-02-14

Abstract

A 32-bit smart card chip is used as a hardware platform for an embedded encryption chip LKT4200 which comprises a 32-bit CPU (central processing unit), an ROM (read only memory), an RAM (random access memory), an EEPROM (electrically erasable programmable read-only memory), a flash memory, communication I/O (input/output) pins and an encryption algorithm coprocessor CAU (command arithmetic unit). The embedded encryption chip adopts standard asynchronous serial communication, supports UART (universal asynchronous receiver transmitter) interfaces, and is packaged by standard SOP8 (small outline package 8) and DIP8 (double in-line package 8) means. Given that single chip microcomputer programs and PC (personal computer) softer programs in market are pirated seriously, the embedded encryption chip LKT4200 can protect programs from piracy. The 32-bit smart card chip is used for standard embedded system encryption by means of novel packaging, and the embedded encryption chip supports the standard asynchronous serial communication, and provides the UART interfaces to bring convenience to customers in use.

Description

Embedded encryption chip

Affiliated technical field

The utility model relates to a kind of embedded encryption chip LKT4200, particularly in the hardware device Single Chip Microcomputer (SCM) program, has the chip of protection Single Chip Microcomputer (SCM) program effect.

Background technology

In the embedded encryption industry, safest encryption chip undoubtedly is to adopt the encryption chip of intelligent card chip as hardware platform, smart card is called the CPU card again, it is born is exactly the chip that designs for safety, so intelligent card chip itself has high security, the chip that financial sectors such as bank are selected for use at present all is an intelligent card chip, as seen its security.

Intelligent card chip inside comprises microprocessor unit CPU, storage unit FLASH, RAM, ROM and EEPROM and input, output interface unit.Wherein, RAM is used for depositing the intermediate data of calculating process, and chip operating system COS is arranged among the FLASH.The adding, decipher and transmit of CPU management information,, the strict unauthorized access card internal information of taking precautions against is found unauthorized access for several times, with locked corresponding block of information.Smart card has good processing power and excellent security performance.

The high-end encryption IC in LKT420032 position is the anti-piracy encryption chip of present industry most significant end performance, chip adopts 32 bit CPUs (obtaining the intelligent card chip of the high safety grade EAL5+ in the whole world), 10K RAM supports ISO7816 and UART communication, and communication speed reaches as high as 460Kbps; User program memory block capacity reaches as high as the 220K byte.When the superelevation safe class was encrypted, speed surmounted general 8 or 16 bit encryption chips greatly.

In order to prevent the machine internal program of unauthorized access or copy single-chip microcomputer, most of single-chip microcomputer all has encryption lock location or encrypted byte, with the screening glass internal program.If when programming the encryption lock location be enabled, just can't directly read program in the single-chip microcomputer with common programmable device, so-called Copy Protection that Here it is is lock function in other words.In fact, such safeguard measure is very fragile, is easy to be cracked.The single-chip microcomputer assailant utilizes leak or software defect in the singlechip chip design by specialized equipment or home-built equipment, by the multiple technologies means, just can extract key message from chip, obtains the single-chip microcomputer internal program.

The utility model content

For this reason, the purpose of this utility model provides a kind of embedded encryption chip LKT4200, and it is connected with single-chip microcomputer on the hardware device by multiple interfaces.Thereby program is not by piracy in the protection single-chip microcomputer.

The utility model is realized by following technical proposal: a kind of embedded encryption chip, it is characterized in that: comprise high end intelligent card microprocessor platform, 32 secret microcontrollers of smart card, ROM, the FLASH safe storage, randomizer, RSA coprocessor, the DES accelerator, above-mentioned parts connect by the AMBA bus.

Further, described embedded encryption chip comprises standard asynchronous serial communication module and UART interface.

Further, described embedded encryption chip adopts SOP8 and DIP8 packing forms.

Further, the program storage capacity of described embedded encryption chip is the 64-420K byte.

The beneficial effects of the utility model are: embedded encryption chip LKT4200 guarantees the confidentiality of data, guarantee both sides' data security of communication, adopting intelligent card chip undoubtedly is safest hardware chip, intelligent card chip is encapsulated with SOP8 and DIP8 mode, support the standard asynchronous serial communication, UART is provided interface, is applied to various hardware device single-side machines aspect, can highly guarantee the safety of single-chip microcomputer internal data resource.And 32 intelligent card chips of high-performance, high security with SOP8 and DIP8 packing forms and support multiple interfaces, be used for the protection of hardware Single Chip Microcomputer (SCM) program field, the concentrated reflection of its security performance advantage just.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is embedded encryption chip LKT4200 outer enclosure figure of the present utility model.

Fig. 2 is an embedded encryption chip kernel framework map of the present utility model.

Embodiment

With reference to accompanying drawing, below embodiment of the present utility model is explained.

Among Fig. 1, be the pin explanation of adopting the embedded encryption chip LKT4200 of SOP8 and the encapsulation of DIP8 form, 1-VSS wherein, 2-is vacant, the 3-I/O, 4-is vacant, and 5-is vacant, the 6-clock signal, 7-resets, 8-VCC.

Among Fig. 2, be embedded encryption chip kernel framework map of the present utility model, on the AMBA bus, be connected with 32 RISCCPU, input/output port, UART, clock controller, safety governor, DES accelerator, ROM, user data area, 10K byte RAM, 20 WatchDog Timer, two 16 bit timing devices, interruptable controller, 16 randomizers, odd even/CRC counter.Wherein, 32 RISC CPU also are connected with the memory protect unit, and input/output port is connected with UART.

The embedded encryption chip LKT4200 of the utility model also comprises: 32 smart card dedicated secret microcontrollers, and high-end smart card security assessment guarantees level V (EAL 5+) special microprocessor platform, FLASH, eeprom memory and RSA coprocessor; It adopts SOP8 and the encapsulation of DIP8 form.

Adopt the ardware feature of the embedded encryption chip LKT4200 of intelligent card chip platform to comprise:

1, the data holding time more than 10 years, repeating more than 100,000 times is erasable;

2, global unique hardware ID and management coding;

3, support the standard asynchronous serial communication, UART is provided interface;

4, support 64-420K byte super large user program download space;

5, clock frequency: l-10MHz; Working temperature :-25 ℃-+85 ℃; Operating voltage: 1.8V-5.5V.

Claims

1. an embedded encryption chip is characterized in that: comprise high end intelligent card microprocessor platform, 32 secret microcontrollers of smart card, ROM, FLASH safe storage, randomizer, the RSA coprocessor, the DES accelerator, above-mentioned parts connect by the AMBA bus.

2. embedded encryption chip as claimed in claim 1 is characterized in that: comprise standard asynchronous serial communication module and UART interface.

3. embedded encryption chip as claimed in claim 1 or 2 is characterized in that: adopt SOP8 and DIP8 packing forms.

4. embedded encryption chip as claimed in claim 3 is characterized in that: its program storage capacity is the 64-42OK byte.