California SSN and Encryption

[Adrian Midgley]

On Friday 26 July 2002 13:58, you wrote:

> The confidentiality point is patently nonsense=20
true, but ...
>                               because your NHS number is
> printed on your NHS medical card.=20

Very few people are issued medical cards now, as a cost-saving move by he=
alth=20
authorities.
GPs are of course entirely entitled to charge anyone who annot produce an=
 NHS=20
card, and the NHS then reimburses the patient and retrieves the differenc=
e...=20
 but this happens rarely at present.

> unless the number is generated in a special way that involves skill and
> judgment.

9 digits plus a 10th produced by a checksum calcualtion involving modulo =
11=20
arithmetic.  If you wnat the code to either create consistent ones or che=
ck=20
ones presented, I published it a few years ago on GP-UK.

--=20
=46rom one of the Linux desktops of Dr Adrian Midgley=20
http://www.defoam.net/            =20