Re: TripleDes

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The purpose of encryption is to keep others from reading your data. If you
want to decrypt something encrypted by someone else, they need to provide
you with the tools (and probably their public key).

You can't simply pick a tool off the shelf and say "Mr. Wizard, decrypt
this". That's the PURPOSE of encryption.

Dan

robert wrote:
Okay, so I spend a couple of tens of hours on this and found out the
following:
- the client sends me something encrypted with java
- i decrypt it with microsoft tools/api calls using VFP
- the result is garbadge, it does not give me the unencypted
information the client sent me
- finally, giving up, i tried some 3rd party tools to no avail. They
don't encrypt or decrypt the same things between them and they
certainly don't decrypt my clients data back to the original data

Appearantly there's no such thing as easy encrypting, if you're going
to encrypt using 3DES, you'd better decrypt it using the same tool.

In order to decrypt even the simplest thing you need to know about
hash algorithms, padding of hashed data, different cryptology
providers, the difference between stream encrypting and block
encrypting, blocksizes fo data and some things more.

If there's anybody who can put me on the right track, I'd very much
appreciate it, also if it's service I'd need to pay for.

Robert

"robert" <robert@xxxxxxx> wrote in message
news:eFZqxMagHHA.5044@xxxxxxxxxxxxxxxxxxxxxxx
Does anybody have a code example of how to encrypt/decrypt a text
using Tripls-DES algorithm in VFP?
I tried looking at the _crypt ffc but it's over my head.

Robert


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