Re: CryptoAPIs - compatibility between NT, 2000 and XP

From: Ryan Menezes [MSFT] (ryanmen_at_online.microsoft.com)
Date: 06/15/04 

Date: Mon, 14 Jun 2004 16:35:13 -0700

Depends on which encryption algorithm you are using. Default key sizes have
definetely changed across platforms and this could most likely be the issue
here. 

-- 
Thanks,
Ryan Menezes [MS]
This posting is provided "AS IS" with no warranties, and confers no rights.
"PA Bear" <PABear@mvps.org> wrote in message
news:uqz9LcjUEHA.2564@TK2MSFTNGP11.phx.gbl...
> Try posting your query to this cryptography-specific newsgroup, to which
I'm
> crossposting my reply:
>
> news://msnews.microsoft.com/microsoft.public.security.crypto
> --
> ~Robear Dyer (PA Bear)
> MS MVP-Windows (IE/OE), AH-VSOP
>
> AumHa Forums
> http://forum.aumha.org
>
> Protect Your PC
> http://www.microsoft.com/security/protect
>
> Lucy Getronics wrote:
> > I have a question about crypto APIs and the different
> > versions of windows - hope this is the right group to ask!
> >
> > We are starting up again with a VB6/VC++ thick client
> > application that was shelved 4 years ago - it was
> > originally built for NT. But is now required to run on
> > 2000 and XP also.
> >
> > As part of the application there is a security server
> > component that uses cryptoAPIs to encrypt/decrpyt
> > passwords for the various components in the system. The
> > passwords are stored in a central database, but are
> > encrypted/decrypted on the client as required.
> >
> > We have three clients  - with each of XP Professional, NT
> > 4 and Win 2000 installed.
> >
> > On Win2000 box if I encrypt passwords both XP and NT
> > hosted applications can decrypt them.
> > If WinXP app encrytpts a password - only the XP box can
> > successfully decrypt and log into applications.
> > On NT machine if I encrypt passwords, both  Win2000 and XP
> > can decrypt passwords.
> >
> > Are there any compatibility (backwards or otherwise)
> > issues between XP, 2000 and NT. We have latest windows
> > updates on our machines.
> >
> > Kind Regards
> >
> > Lucy
>

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