3/3

ST19XT34

SOFTWARE DEVELOPMENT

Software development and firmware generation

(ROM and options) are supported by a compre-

hensive set of development tools, dedicated at de-

velopment and validation of softwares:

– Smartcard ICs Emulator,

– ST19X simulation package,

based stations,

– Powerful C/C++ compiler and debugger are

also available (third party tools).

CRYPTOGRAPHIC LIBRARIES

For an easy and sufficient use of the Modular

Arithmetic Processor (MAP), ST proposes a com-

plete set of firmware subroutines. This library is lo-

cated in a specific ROM area. This library saves

the operating system designer from coding first

layer functions and allows the designer to concen-

trate on algorithms, Public Key Cryptography and

Secret Key Cryptography protocols implementa-

tion.

This library contains firmware functions for:

ASYMMETRICAL ALGORITHMS

– 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 using or not the

Chinese Remainder Theorem (CRT)

– more elaborate functions such as RSA

signatures and verifications for modulo length

up to 2176 bits long, DSA signature and

authentication.

– full internal key generation for signatures/

verifications. This guarantees that the secret

key will never be known outside the chip and

contributes to overall system security.

– long random number generation

– RSA up to 2176 bits

– DSA up to 1088 bits

– SHA-1

– RSA key generation

SYMMETRICAL ALGORITHMS

– DES, triple DES, DESX computations

– CBC chaining mode

– Loading/Unloadings from/to registers are

secured against SPA

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences

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 publication are subject

to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not

authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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