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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:18:32 ADT
Marcus Watts (mdw@umich.edu)
Tue, 16 Jun 98 16:29:54 -0400
You wrote:
> From: Teh Kao Yang <tehyang@gate.infoexpress.com>
> To: CodherPlunks@toad.com
> Subject: Need RSA Encryption for bulk data
>
> Hi all,
>
> Does anyone know if there is any available libraries out there that can
> do RSA public-key-type of encryption for data? Basically I need to
> RSA encrypt some bulk data with a private key. I looked at the
> RSAREF and Microsoft Crypto API libraries, and they all have a lot of
> functions supporting encryption, signing, and lots more.. but for some
> reason they just don't suppor this one functionality I'm looking for...
>
> I'm sorry if this is a really dumb question, but I'm just starting out
> with crypto programming and didn't know where else to look for advice...
>
> Thanks a bunch
> TK
>
>
>
You won't find one, because RSA is really really slow,
and a really bad way to encrypt large amounts of data.
What people do instead, is to use RSA to encrypt a secret
key, then use the secret key to encrypt the bulk data.
For instance, older versions of PGP use "idea" to do the
bulk encryption. For more code bases to look at, you
might look at PGP, and SSLeay.
-Marcus Watts
UM ITD PD&D Umich Systems Group
The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:18:32 ADT