Christophe FOESSER wrote:
> Hi,
>
> >-----Original Message-----
> >From: Data [mailto:[EMAIL PROTECTED]]
> >Sent: Wednesday, October 11, 2000 10:17 AM
> >To: [EMAIL PROTECTED]
> >Subject: [OCF] 3-DES
> >
> >
> >According to the JavaCard 2.1 API,
> >
> >Interface DESKey contains an 8/16/24 byte key for single/2 key triple
> >DES/3 key triple DES operations. And Gemxpresso 211is states that it
> >supports only security algorithm of 3-DES.
> --------------------------------------------------------------------------
> No 8/16/24 are available in JC API, 3DES security restriction is for Openplatform
> security. Only NO_PAD algos are available, take care of this...
> --------------------------------------------------------------------------
> >
> >Hence, is it true that Gemxpresso 211is can only manipulate the DES key
> >with
> >length at most *24* byte?
> --------------------------------------------------------------------------
> No
> --------------------------------------------------------------------------
> >
> >By the way, if I want to generate a 3-DES key with KeyGenerator in
> >package javax.crypto, its length must be 112 bits. The problem is how
> >can I generate the 3-DES key with correct length (off-card) that can
> >work on Gemxpresso 211is.
> --------------------------------------------------------------------------
> On board key generation is for RSA keys only in Gxp211PK and Gxp211PKis.
> No on-board key generation available for symetric keys. You can use
> "javacard.security.RandomData" (with ALG_SECURE_RANDOM) class to generate
> a good DES or 3DES key.
How about if I want to generate DSA keypair?
How can I do this?
Thanks!!!!
-Data
---
> Visit the OpenCard web site at http://www.opencard.org/ for more
> information on OpenCard---binaries, source code, documents.
> This list is being archived at http://www.opencard.org/archive/opencard/
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