1 / 4 da t a b r ief this is brief data from stmicroelectronics. details are subject to change without notice. for complete data, please contact your nearest sales office or smartcard products divison, rousset, france. fax: (+33) 4 42 68 87 29 st19cf68 cmos mcu based safeguarded smartcard with modular arithmetic processor & 8 kbytes eeprom product features enhanced 8 bit cpu with extended addressing modes 23 kbytes of user rom with partitioning system rom for libraries 960 bytes of user ram with partitioning 8 kbytes of user eeprom with partitioning ? highly reliable cmos eeprom submicron technology ? 10 years data retention ? 100,000 erase/write cycles endurance ? separate write and erase cycles for fast ?1? programming ? 1 to 64 bytes erase or program in 1 ms security firewalls for memories and map very high security features including eeprom flash program, and clock management 8 bit timer with interrupt capability 2 serial access, iso 7816-3 compatible 3v 10% or 5v 10% supply voltage power saving standby mode contact assignment compatible iso 7816-2 unique serial number on each die esd protection greater than 5000v 512 bit modular arithmetic processor ? fast modular multiplication and squaring us- ing montgomery method ? software crypto libraries for efficient algo- rithm coding using a set of advanced func- tions ? software selectable operand length up to 1024 bits fast cryptographic functions processing at 5v, 10 mhz: (*)crt: chinese remainder theorem figure 1 delivery form function time rsa 512 bits signature with crt (*) 70 ms rsa 512 bits signature without crt 195 ms rsa 512 bits verification(e=$10001) 5 ms rsa 768 bits signature with crt 190 ms rsa 768 bits signature without crt n/a rsa 768 bits verification (e=$10001) 100 ms rsa 1024 bits signature with crt 400 ms rsa 1024 bits signature without crt n/a rsa 1024 bits verification(e=$10001) 145 ms wafer micromodule (d4) 4 4 4 4 1 may 2003
st19cf68 2 / 4 hardware description the st19cf68, a member of the st19 device family, is a serial access microcontroller especially designed for very large volume and cost competi- tive secure portable objects. its internal modular arithmetic processor (map) is designed to speed up cryptographic calculations using public key algorithms. based on a 512 bits processor architecture, it processes modular mul- tiplication and squaring up to 512 bits modulo. the st19cf68 is based on a stmicrolectronics 8 bit cpu and includes on chip memories: user rom, user ram and user eeprom with state of the art security features. rom, ram and eeprom memories can be con- figured into partitions with customized access rules. access from any memory area to another are protected by hardware firewalls. access rules are user defined and can be select- ed by mask options or during the life of the prod- uct. it is manufactured using the highly reliable st cmos eeprom submicron technology. as with all the other st19 family members, it is ful- ly compatible with the iso 7816 standards for smartcard applications. software development software development and firmware (rom code/ options) generation are done with the st16- 19 hdse development system. figure 2 block diagram 379 internal bus ram user rom eeprom map serial i/o inter- face 8 bit cpu 8 bit timer clock genera- tor module unpre- dictabl e number generator security system rom and map firewall memory access firewall clk system rom and crypto libraries reset vcc i/ognd administrator
st19cf68 3 / 4 cryptographic libraries for an easy and efficient use of the map, st pro- poses a complete set of firmware subroutines. this library is located in a specific rom area, leaving the user rom for the application software. this library saves the operating system designer from coding first layer functions and allows the de- signer to concentrate on algorithms and public key cryptographic (pkc) protocol implementa- tion. this library contains firmware functions for: ? loading and unloading parameters and results to or from the map ? calculating montgomery constants ? basic mathematics including modular squaring and multiplication for various lengths ? modular exponentiation with or without using the chinese remainder theorem (crt), ? rsa signatures and authentications for any modulo length up to 1024 bits long, dsa signa- ture and verification up to 512 bits. ? long random number generation. ? full key generation for rsa and dsa (including prime numbers generation) ? hashing algorithm sha-1.
s t 19cf68 4 / 4 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners ? 2003 stmicroelectronics - all rights reserved bull cp8 patents stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - italy - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states www.st.com
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