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List:       ms-cryptoapi
Subject:    Re: Session keys and hashed data
From:       Jeff Spelman <jeffspel () MICROSOFT ! COM>
Date:       1999-02-26 15:49:07
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Manish and Greg
#1 is not currently supported in released versions of the Microsoft CSPs.
Thanks Jeff

-----Original Message-----
From: Greg Haskins [mailto:greg@PHONEMISER.COM]
Sent: Friday, February 26, 1999 7:22 AM
To: CryptoAPI@DISCUSS.MICROSOFT.COM
Subject: Re: Session keys and hashed data


Hi Manish,
        (I have never tried #1, so forgive me if this I am missing
something).

#1)  Make the "random session key" exportable and then call
CryptEncrypt() with the password based session key as the key and the
exported random session key as data.

#2) You can use CryptGetHashParam() with HP_HASHVAL to get the hash data
out of the CSP.

-Greg


> -----Original Message-----
> From: Manish Apte [mailto:mapte@GENSTOR.COM]
> Sent: Friday, February 26, 1999 4:38 AM
> To: CryptoAPI@DISCUSS.MICROSOFT.COM
> Subject: Session keys and hashed data
>
>
> Hi all
>
> I have following two questions
>
> 1. Is is possible to encrypt a session key using another
> session, the session key being 'derieved' from a password ?
>         In short I want to create a random session key and
> encrypt it using a password (rather than some ones public key)
>         I have studied the documentation of CryptExportKey
> which says that it is up a CSP to provide this feature (it
> also says that
>         MS CSP's do NOT have this facility), correct me I am wrong
>
> 2. If I hash some data (lets see a password) using
> CryptCreateHash and CryptHashData, how do I 'export' the
> hashed data out of the CSP ?
>
> Thanks in advance
>
> Manish Apte
> Trancore Software
>
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