Re: How to exchange certificate ?

From: Michel Gallant (neutron_at_NOSPAMistar.ca)
Date: 01/12/04 

Date: Mon, 12 Jan 2004 10:16:04 -0500

"Richard Grossman" <richard@goldmail.net.il> wrote in message
news:%23DvsOmO2DHA.2680@TK2MSFTNGP11.phx.gbl...
> Hi,
>
>
> "Michel Gallant" <neutron@NOSPAMistar.ca> wrote in message
> news:Om9PH%23F2DHA.3216@TK2MSFTNGP11.phx.gbl...
> > Hi Richard,
> > Which functions cause problems and what error messages?
> > There is pretty good documentation and samples on this at:
> >
> >
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/creating_and_receiving_enveloped_data_messages.asp
>
> Look my problem is clear, I cannot used the microsoft api to envelop the
> data cause the other part use java to decrypt
> data. Thus I really want to do it manually I mean :
> Without CryptoAPI : Generate a symetric 128 bit key
> Encrypt (symetric) the bulk data (payload)
> with Rinjdael symetric algorithm
>
> With Crypto API : Get the Public key from a particular certificate in
> certificate store (I own ONLY a public key).
> Encrypt the symetric key with RSA encryption

The sample code which I referenced in an article does exactly the above
(simple generates a SIMPLEBLOB) at:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/example_c_program_encrypting_a_file.asp

What is the problem there?
- Mitch