Re: st: encrypt an ID

[Austin Nichols <austinnichols@gmail.com>]

See
http://statalist.org/archive/2007-06/msg00456.html

On Wed, Apr 7, 2010 at 3:05 PM, Jeph Herrin <junk@spandrel.net> wrote:
> This has come up before in the archives, but the
> answer has not, so worth trying again.
>
> I have a dataset with individuals who have 9 digit
> numeric identifiers. I need to encrypt these identifiers
> uniquely (ie, in a way that I can unencrypt them later
> if needed). The encrypted key can be numeric or string.
>
> I can do something silly like move the digits around
> according to some pattern I invent, but would be nice if
> there were something more robust available - is there?
> If not existing Stata code, maybe an existing alogorithm
> that isn't too difficult to implement?
>
> cheers,
> Jeph
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