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- Newsgroups: sci.crypt
- Path: sparky!uunet!mcsun!sunic!nobeltech!admin.kth.se!saaf.se!pausch
- From: pausch@saaf.se (Paul Schlyter)
- Subject: Re: Cheap RSA chips? (Was: Re: shift registers??)
- Message-ID: <1992Aug21.080153.9862@saaf.se>
- Organization: SAAF, Svensk Amat|rAstronomisk F|rening
- References: <1992Aug19.864.126@ALMAC> <1992Aug20.160528.2155@nessie.mcc.ac.uk>
- Distribution: sci
- Date: Fri, 21 Aug 92 08:01:53 GMT
- Lines: 28
-
- In article <1992Aug20.160528.2155@nessie.mcc.ac.uk> segr@nessie.mcc.ac.uk (Simon Read) writes:
- >In article <1992Aug19.864.126@ALMAC>, keith.willis@almac.co.uk
- >writes:
- >
- >> You mean that one could implement RSA in hardware for a
- >> reasonably low price? And would such a device still infringe
- >> the patents (in the US), or do they only cover software
- >> implementations?
- >
- >Chips that "do RSA" are in fact no more than modular
- >multiplication chips (they perform the calculation C=(M**E) mod N,
- >for C M E and N very large numbers, typically 512 or 1024 bits).
- >
- >This can be done quite cheaply. Philips designed but never sold a
- >smart card to do it,
-
- Not yet, but Philips will probably sell it in the future. At least
- they are still developing the card (and it does need development,
- for instance, it's not yet ISO 7816 compliant, i.e. many smart card
- readers cannot handle the Philips RSA card).
-
-
-
- --
- ---
- Paul Schlyter, Swedish Amateur Astronomer's Society (SAAF)
- Nybrogatan 75 A, 6 tr, S-114 40 Stockholm, Sweden
- InterNet: pausch@saaf.se
-