Re: Crypto API using RC2 instead of RC4?

From: mscir (mscir_at_yahoo.com)
Date: 11/23/05 

Date: Tue, 22 Nov 2005 17:38:44 -0800

Matt wrote:
> Thanks for the reply Valery,
>
> Basically I am trying to do what is described by this KB article:
> http://support.microsoft.com/default.aspx?scid=kb;en-us;821762
>
> I have a VB 6 app that needs to encrypt some data, send it over the
> network to a .Net app which decrypts it, the VB 6 app then receives
> encrypted data in return which it needs to decrypt.
>
> The KB article was great, but they don't provide the decrypt function
> in VB 6, only the encrypt. I tried to create myself but it just errored
> with certain strings.
>
> So now I am desperately looking for some way to get an algorithm that
> will work between VB6 & .Net.
>
> All I really need is a working decrypt function to go along with the
> provided encrypt function from the above KB article. :(
>
> Matt
>
How about this approach (from 1st pg of google hits)

http://www.freevbcode.com/ShowCode.Asp?ID=967
FrezCrypto is an ActiveX DLL that wraps the Microsoft CryptoAPI and
allows the user to encrypt or decrypt strings based on the RC2 Block
Algorithm or RC4 Stream Algorithm.

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