As part of the IMEI the first two digits include the country of approval (33 for France for example) or the manufacturer. I will like to see alternatives that protect possible personal identifiable information.
A message digest of the (IMEI, Nonce) will theoretically make use of all parts of space and will provide unlinkability between IPv6 global addresses and certain devices, what imho is highly recommendable. /aep 1.2 On 13 Mar 2002, Alexandru Petrescu wrote: > Alexandru Petrescu <[EMAIL PROTECTED]> writes: > > Francis Dupont <[EMAIL PROTECTED]> writes: > > > Have you read draft-dupont-ipv6-imei-00.txt? > > > > Hi Francis, thanks for putting the IMEI idea on paper, it's been long > > expected by many circles. I have a remark below, please correct me if > > I misunderstood the conversion. > > > > > The IMEI 330001 53 007826 gives the 0333:0001:5300:7826 (usually > > > written 333:1:5300:7826) interface identifier. > > > > Since IMEI is represented in decimal and addresses in hexa, by doing > > the above it effectively leads to impossibility of use of parts of > > address space. I mean, all IMEI's can be represented into an IPv6 > > Interface ID, but certain IPv6 Interface ID's will never have a > > correspondent IMEI. Maybe better can be done. > > ...I would suggest re-phrasing the following: > > "The IMEI 330001 53 007826 gives the 0333:0001:5300:7826 (usually > written 333:1:5300:7826) interface identifier." > > into: > > "For example, the IMEI 330001 53 007826 gives the Interface ID > 300:6072:9ed2. The maximum IMEI 999999 99 999999 is Interface ID > 5af3:107a:3fff. The space in the Interface ID starting at > 5af3:107a:4000 inclusive and up to ffff:ffff:ffff inclusive can > not represent an Interface ID derived from an IMEI." > > Alex > > -------------------------------------------------------------------- > IETF IPng Working Group Mailing List > IPng Home Page: http://playground.sun.com/ipng > FTP archive: ftp://playground.sun.com/pub/ipng > Direct all administrative requests to [EMAIL PROTECTED] > -------------------------------------------------------------------- > -- -------------------------------------------------------------------------- That you are not paranoid, it doesn't mean that they are not watching you! http://www.it.kth.se/~aep -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
