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List:       ms-cryptoapi
Subject:    
From:       Jeff Spelman <jeffspel () MICROSOFT ! COM>
Date:       1999-06-25 20:55:08
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Sanjay
The below URL is the site where you can get the high encryption pack for
Windows 2000 Beta 3 (this includes the Microsoft Enhanced Cryptographic
Provider).

http://www.microsoft.com/Windows/server/beta/downloads/default.asp

Thanks Jeff

-----Original Message-----
From: Sanjay Beri [mailto:Sanjay.Beri@ESTAMP.COM]
Sent: Wednesday, June 23, 1999 2:55 PM
To: CryptoAPI@DISCUSS.MICROSOFT.COM
Subject:


I need to use direct RSA encryption/decryption on data.

Currently, from what I understand the Microsoft Base Provider does not
allow one to encrypt directly with RSA  public keys and decrypt with RSA
private keys.  Instead, you are forced to hash the data and then allowed
to RSA encrypt it (as I understand it, you cannot avoid the first step
of hashing no matter how small your packet is).  This would be done with
CryptEncrypt and CryptDecrypt.  Encryption of symmetric keys in a
digital envelope is of course also supported.
However, I need to be able to take a stream of data and apply RSA
encryption/decryption directly on it.

>From what I have read on MSDN, in Windows 2000, the Microsoft Enhanced
RSA Provider is supposed to be able to support direct encryption with
RSA public keys and decryption with RSA private keys.  I currently have
Beta 3 of Windows 2000 and was wondering how I get the CSP (i.e. dll)
that supports direct RSA encryption/decryption.  My understanding is
that I would then be able to call CryptEncrypt with a NULL value for the
hash handle to perform the needed direct RSA encryption.

Furthermore, since I am looking at using a crypto board (like Atalla), I
was wondering if anyone knows which vendor's CSPs support direct RSA
encryption/decryption (for NT 4.0) as I described above.

Any help or information would be greatly appreciated.

Thanks.

Sanjay.
mailto:Sanjay.Beri@estamp.com

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