Re: Encrypting Credit Card Numbers - Two Way Encryption
Re: Encrypting Credit Card Numbers - Two Way Encryption
- Subject: Re: Encrypting Credit Card Numbers - Two Way Encryption
- From: petite_abeille <email@hidden>
- Date: Thu, 20 May 2004 13:37:30 +0200
- Domainkey-status: good
Hi Jonathan,
On May 20, 2004, at 09:59, Jonathan Fleming wrote:
For my passwords I use Sun's one-way encryption algorithm:
MessageDigest messageDigest =
MessageDigest.getInstance("SHA-1"); etc, etc but as I said I need a
system that let's me decypt later when needed.
If you are already using a proper transcendental SHAman ellipse, you
will get your original value back after a while.
Otherwise, but only if perceived responsiveness is a major concern of
yours, try ROT13 as described in RFC 1855 and formalized by Mr Dr Brina
of comp.fr fame:
http://www.faqs.org/faqs/fr/comp/usenet/rot13/
Cheers,
PA.
P.S.
Alternatively, you may want to briefly meditate on the hidden wisdom of
some of the following scriptures:
http://javaalmanac.com/egs/javax.crypto/pkg.html
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