Hi,
The good place for your question is Gemplus hotline. Please try to use it
first for GemXpresso related questions...
You are certainly using an IS version of GemXpresso RAD Kit. If it's correct
all can be explained rapidly.
On IS versions, DES & 3DES is standard, but key are limited with the
following process.
For each key bytes
- if the_byte % 2 == 0 -> the_byte = 0xCA
- if the_byte % 2 == 1 -> the_byte = 0x2D
In your case
DES Key: {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};
with limitation your key is changed to:
New DES Key: {0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,0x2D,0xCA};
TripleDES key: {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,
0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};
with limitation your key is changed to:
New TripleDES Key: {0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,
0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,
0x2D,0xCA,0x2D,0xCA,0x2D,0xCA,0x2D,0xCA};
And a TripleDES encryption with a Key value K1=K2=K3 is a DES encryption...
That's why you retreive the same result for DES and TripleDES.
try the new key and your message and you'll certainly found
"8B7172491C59C4B0".
Try to increment only one byte of K2 and your result will be different
because it will change limited value.
If you build your keys with only 0x2D & 0xCA bytes values (in order you
chose) DES and TripleDES results will always be correct with IS kit because
keys are already limited...;-)
regards
Christophe.
-----Message d'origine-----
De : Bharavi Gade [mailto:[EMAIL PROTECTED]]
Envoy� : jeudi 21 juin 2001 07:09
� : [EMAIL PROTECTED]
Objet : Re: [OCF] GPK PILOT
Hi,
I am using GemXpressoRAD toolkit which has Non-JCE Cryptix(cryptog.jar).
I am facing strange problems when I am trying to use that library for
encryption/decryption.
I have a sample plain text: byte
pt[]={0x0,0x12,0x0,0x0,0x0,0x0,0x0,0x0};
My Keys for DES and TripleDES are
DES Key: byte key[]={0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};
TripleDES key:
byte
key[]={0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x11,0x12,0x13,0x14,0x15,
0x16,0x17,0x18,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};
Now I am getting these results with Cryptog.jar(non-JCE):
DES: EncryptedValue: 8B7172491C59C4B0
TripleDES : EncryptedValue: 8B7172491C59C4B0
Output is same for both DES and TripleDES
Other JCE compatable Library results(CryptixJCE and SunJCE)
=======================
DES : Encrypted Data: 9A9FE27BF0594CE9
TripleDES: Encrypted Data: 6F1B8F5EF24125FC
And Encrypted text is not same with Cryptog and other Providers.
What could be the problem?
Thank in advance.
regards,
Bharavi
----- Original Message -----
From: "Mohammed SADIQ" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Wednesday, June 20, 2001 10:30 AM
Subject: RE: [OCF] GPK PILOT
> If the menus are complex, please use the APDU dispatcher and exchange
APDUs with the cards. The commands are very clearly mentioned in the card
reference manual.
>
> By the way, there is a menu item for 'erase' command. I didn't get what
you mean by card reset. If you are referring to the session, yes, there is a
menu item for that too.
>
> Good Day
>
> ----------
> Be ashamed to die until you have won some victory for humanity.
> - Horrace Mann(1796-1859)
>
>
> >-----Original Message-----
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >Sent: Monday, April 19, 1999 6:58 PM
> >To: [EMAIL PROTECTED]
> >Subject: [OCF] GPK PILOT
> >
> >
> >Hi all,
> >
> >We are very interested in developing multiapplication smartcards,
> >we have tried the GPK and MPCOS cards with the GPK pilot
> >and we have found the mechanisms very confuse to use there are
> >menus, windows, keys, codes in excess and many incompatible and not
> >supported functions for a practical use of the smartcards globally.
> >
> >And we have not found simple instructions to reset the card,
> >erase a file
> >...
> >
> >The security must be in the encryption algorithms not in the
> >confusion of the conception
> >
> >Yones LEBADY
> >[EMAIL PROTECTED]
>
>
>
> ---
> > 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/
>
> ! To unsubscribe from the [EMAIL PROTECTED] mailing list send an email
> ! to
> ! [EMAIL PROTECTED]
> ! containing the word
> ! unsubscribe
> ! in the body.
>
---
> 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/
! To unsubscribe from the [EMAIL PROTECTED] mailing list send an email
! to
! [EMAIL PROTECTED]
! containing the word
! unsubscribe
! in the body.
