Hi

Then I'd suggest adding a field with a CRC using SYS(2007, field) so you

can verify that it hasn't been tampered with underway.

-Anders

----- Original Message -----

From: "Florin Marta" <flmarta@romtelecomtm.ro>

To: "Multiple recipients of ProFox" <profox@leafe.com>

Sent: Friday, July 14, 2000 8:11 PM

Subject: Re: Encryption of data (was no subject)

> Sorry i wasn't more clear.

> I wanna be able to de-code the data. I wrote a program that use e-mail to

> transmit a table from one point to another. The problem is that the users

> who have Visual FoxPro now modify the table directly before sending it.

This

> should be done only from the program and causes me a lot of problems (at

> destination the table is processed automaticly and invalid data may cause

> unpleasant error messages).

> Thank you all for your help

> Florin Marta

>

> ----- Original Message -----

> From: "Stuart Dunkeld" <Stuart.Dunkeld@eastsussexcc.gov.uk>

> To: "Multiple recipients of ProFox" <profox@leafe.com>

> Sent: Friday, July 14, 2000 5:57 PM

> Subject: RE: Encryption of data (was no subject)

>

>

> > Hi Florin

> >

> > A consideration here is whether you want to be able to de-code the data.

> >

> > An example is a users table, which contains an encrypted password. You

> never

> > want to decode the password, you want to compare the encrypted users

> > password against the value stored - a one way street, in other words.

> > To do this you can use sys(2007) to generate a checksum of the values,

> which

> > you can store in the table.

> >

> > If you are going to want to decode the stored data, use something like

Dae

> > suggested, which is secure but easily reversed. There is a reversible

> > encryption library out there somewhere (Tom Rettig's CIPHER.FLL?) if you

> > want something a bit meatier.

> >

> > hth,

> >

> > stuart

> >

> >

> > -----Original Message-----

> > From: Florin Marta [mailto:flmarta@romtelecomtm.ro]

> > Sent: 14 July 2000 16:34

> > To: Multiple recipients of ProFox

> > Subject: (No subject)

> >

> >

> > I'm looking for a way to encode the caracter fields in a table.

Something

> > light, doesn't have to be rock solid, but enough to don't understand

> > anything with a browse. Does anybody has write code to do something like

> > this?

> > (English is not my 1st language :)

> >

> > Florin Marta

> > "No amount of advance planning will ever replace dumb luck."

> > --Anonymous

> >

> >

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