[ILUG] gpg encryption query...

[kevin lyda]

considering the western union issue with stolen cc's i'm wondering
what might be a good way to store a database of cc numbers.

for pretty much any cc processing application there are the following
two needs.

    there's a need to see if a new cc number is in the db.
    there's a need to extract the cc's once a day.

now if it wasn't for the last issue, you could do an md5 encryption on
the cc.  you wouldn't be able to see it again, but you can just encrypt
the incoming cc and compare with it.  so i tried using gpg on a small
text file twice and the results were different each time.  that makes
sense since gpg/pgp only use their public key algorithms to encrypt a
password for another (faster) cypher.

can gpg or any other linux based public key algorithm be convinced to
encrypt using only the public key algorithm?  the tough requirement
here is that speed *is* an issue though it is a small amount of data.
are there other ways i'm not thinking of to do this?

kevin

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