At 8:07 AM +0200 6/7/02, [EMAIL PROTECTED] wrote: > To complete some of the info here : Check also > http://www.corbina.ru/~versia23/ALLSAT/SatXpress/SmartCard/Iso7816-3.htm > (Thx. To hariharan swaminathan, MUSCLE archjives, august 2, 2001) > > My impression is that T=0 is becoming the default _required_ protocol of > the newer card-generations (in Europe), but that T=1 has the advantage > of being considerably faster. This impression stems from a few recent > RFP's for RSA SC's. > Be aware that some (proprietary) drivers for SC/SC-readers have only T=0 > to support certain cards natively (although in hardware, SC and reader > support also T=1). > > Something which is odd because of the growing memory on SC's (and the > groing requirement of having storage for certificates, multiple > applications on-board etc.), and thus reading time becomes longer (for > example to know the P11/P15 contents of a certain card when inserting) ?
Actually, this is understandable, given the current state of the art in terms of embedded nonvolatile memories (NVM). NVM access is very slow compared to RAM, particular when it comes to writing. Larger applications will consequently take longer to load, and probably save more data to NVM before terminating. But NVM has the highly desirable feature of retaining its contents once the card has been removed from a reader, and therefore its power source. If you think about it, this situation is not unlike PCs years ago. > K.R. > OLJ > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On > Behalf Of jipi > Sent: vrijdag 7 juni 2002 4:12 > To: [EMAIL PROTECTED] > Subject: Re: MUSCLE protocol T0 or T1 > > > Francis wrote: > >> Hi all, >> may be this question is out of topic, but I hope that >> someone can help me. I need to know the differences >> between smartcards which use T=0 and T=1 protocol. >> There are differences in price, in capabilities, in functionalities? >> Do exist also T=0 smartcards with cryptoprocessor? >> > > > T=0 is character-oriented protocol > T=1 is block-oriented. > > find ISO7816-3 > > in practical terms, you have to see what protocol does the underlying > architecture adheres to. For example, in Singapore, most of the cards > are T=0 and in japan most of the cards and terminals are T=1. > > And up to today, the general agreed norm would be for the terminal to > accept T=0, T=1 + T=?? cards depending on applications and for the card > to talk their specific T=0 or T=1. There are methods for describing this > > T=0, T=1 protocol type selection in the ISO docsuments. > > on a technical note, they are just two standard methods of handling data > > transfer. > > jipi > > *************************************************************** > Unix Smart Card Developers - M.U.S.C.L.E. > (Movement for the Use of Smart Cards in a Linux Environment) > http://www.linuxnet.com/ > To unsubscribe send an email to [EMAIL PROTECTED] with > unsubscribe sclinux > *************************************************************** > > *************************************************************** > Unix Smart Card Developers - M.U.S.C.L.E. > (Movement for the Use of Smart Cards in a Linux Environment) > http://www.linuxnet.com/ > To unsubscribe send an email to [EMAIL PROTECTED] with > unsubscribe sclinux > *************************************************************** -- +------------------------------------------------------------------+ | Taylor Leaming Staff Engineer | | STMicroelectronics - Austin Design Center Phone: (512) 225-6170 | | 7501 Capital of Texas Highway FAX: (512) 225-6199 | | Building C, Suite 250 <http://www.st.com> | | Austin, Texas 78731 <mailto:[EMAIL PROTECTED]> | +------------------------------------------------------------------+ *************************************************************** Unix Smart Card Developers - M.U.S.C.L.E. (Movement for the Use of Smart Cards in a Linux Environment) http://www.linuxnet.com/ To unsubscribe send an email to [EMAIL PROTECTED] with unsubscribe sclinux ***************************************************************
