doesn't PGP now come as a DLL??? Maybe only in the US :(
There are a few DES implementations on the web, one of which is on
the dunstan thomas interbase site (same encryption as they use for
IB passwords (and unix passwords), which I THINK is triple DES)
http://interbase.dthomas.co.uk or the link of the DUG site here.
you could get Peter Hyde's TCompress and then XOR the result with
something -
it would be quick, easy, tho it is security by obscurity, which is not
good.
But the size of the result should be smaller than the original :)
Also, Peter Gutmann at UoA has a thing called CryptLib, which looks
good, tho
last time I looked at it, the licence was not good for me (ie, not cheap
for
commercial use - this was a year ago) and AFAIK its not ported to
Delphi.
http://www.cs.auckland.ac.nz/~pgut001 - definatly work a serious look!!
There is also an NZ PK package from Bill Raike (sorry if the spelling is
wrong), tho I dont have the URL. Being commercial and PK, I'd not expect
it to be cheap
either, tho I havn't looked.
Then there is the MS Crypto Library. um, yeah, whatever.....
:)
Nic
Patrick Dunford wrote:
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Can anyone recommend an encryption component with source code, I am
> looking at encrypting some data in a database to prevent its use by other
> programs. Alternatively a compression component that can also
> encrypt/decrypt would be a possible consideration. When encrypting text
> you don't want the string to become significantly longer (if possible not
> at all longer) than the original if you are working near the limits of
> field length (in this case there may be enough free length to allow
> expansion). Otherwise I thought of putting a password on the tables
> (Paradox)...
>
> ============================================
> Patrick Dunford, Christchurch, NZ
> PRO VSM - Human Rights for Students!
> http://patrick.dunford.com/
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>
> iQA/AwUBNwAGzJ/ufSMMVdBMEQLSKQCgm+xrXlNsLxXBqYGgugeq4W43Q8UAn27A
> pWR8Z+nOUzPc9ZXcwJXcOIzM
> =05Tl
> -----END PGP SIGNATURE-----
> ---------------------------------------------------------------------------
> New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
> Website: http://www.delphi.org.nz
--
Nic Wise - Inprise New Zealand Ltd. [EMAIL PROTECTED]
09-360-0231 (wk), 021-676-418 (mob), [EMAIL PROTECTED] (hm)
My opinions do not reflect the opinions of my employer,
or myself at times.
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