tpm4java-users

Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33 The descryption process did not complete

[<and...@te...>]

I'm using a hardware TPM version 1.2. I tried to deactivate the HMAC =
verification of the TPM using the code:

TssLowlevel l =3D TssFactory.getLowlevel();
l.setCheckReply(false);

but it didn't work. I guess the problem is not due to a wrong HMAC =
verification. The TPM returns the Bad code 33, but i didn't find any =
information about it, only the TPM specifications documents by the TGC =
with no further information.

I hope someone can help me to solve this problem.

Thank you.

Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33 The descryption process did not complete

[Frederic S. <st...@se...>]

Hi Andr=E9s,

sorry, I have no clue either. I suggest that you try your code with the=20
TPM emulator to verify whether your code is okay or if it is a problem=20
with your HW TPM. The problem is that most of the available TPMs are not =

conform to the TCG specification and therefore many problems occur.

best regards
Frederic


Andr=E9s Rosado Laitinen schrieb:
> I'm using a hardware TPM version 1.2. I tried to deactivate the HMAC ve=
rification of the TPM using the code:
>=20
> TssLowlevel l =3D TssFactory.getLowlevel();
> l.setCheckReply(false);
>=20
> but it didn't work. I guess the problem is not due to a wrong HMAC veri=
fication. The TPM returns the Bad code 33, but i didn't find any informat=
ion about it, only the TPM specifications documents by the TGC with no fu=
rther information.
>=20
> I hope someone can help me to solve this problem.
>=20
> Thank you.
>=20


--=20
Frederic Stumpf              	                phone: +49 6151 16 7015
TU Darmstadt -- Department of Computer Science  fax: +49 6151 16 3514
Research Group IT-Security 	=09
eMail: st...@se...

Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33The descryption process did not complete

[<des...@ho...>]

OK, the problem is that a was sending a wrong public key for the decryption 
process. I used the AIK public key not the Endorsement public Key. The 
problem is that TPM_ReadPubek can't be used in the new TPM specification, 
you have to call TPM_OwnerReadPubek instead.


----- Original Message ----- 
From: "Andrés Rosado Laitinen" <and...@te...>
To: "Frederic Stumpf" <st...@se...>
Cc: <tpm...@li...>
Sent: Wednesday, June 13, 2007 12:12 PM
Subject: Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 
33The descryption process did not complete


Ok, never mind, i tried it with a TPM emulator and it worked, so i'll use
the emu.

Thank you.

----- Original Message ----- 
From: "Frederic Stumpf" <st...@se...>
To: "Andrés Rosado Laitinen" <and...@te...>
Cc: <tpm...@li...>
Sent: Wednesday, June 13, 2007 11:17 AM
Subject: Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33
The descryption process did not complete


Hi Andrés,

sorry, I have no clue either. I suggest that you try your code with the
TPM emulator to verify whether your code is okay or if it is a problem
with your HW TPM. The problem is that most of the available TPMs are not
conform to the TCG specification and therefore many problems occur.

best regards
Frederic


Andrés Rosado Laitinen schrieb:
> I'm using a hardware TPM version 1.2. I tried to deactivate the HMAC
> verification of the TPM using the code:
>
> TssLowlevel l = TssFactory.getLowlevel();
> l.setCheckReply(false);
>
> but it didn't work. I guess the problem is not due to a wrong HMAC
> verification. The TPM returns the Bad code 33, but i didn't find any
> information about it, only the TPM specifications documents by the TGC
> with no further information.
>
> I hope someone can help me to solve this problem.
>
> Thank you.
>


-- 
Frederic Stumpf                              phone: +49 6151 16 7015
TU Darmstadt -- Department of Computer Science  fax: +49 6151 16 3514
Research Group IT-Security
eMail: st...@se...



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Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33 The descryption process did not complete

[<and...@te...>]

Ok, never mind, i tried it with a TPM emulator and it worked, so i'll use 
the emu.

Thank you.

----- Original Message ----- 
From: "Frederic Stumpf" <st...@se...>
To: "Andrés Rosado Laitinen" <and...@te...>
Cc: <tpm...@li...>
Sent: Wednesday, June 13, 2007 11:17 AM
Subject: Re: [Tpm4java-users] PLEASE HELP! TPMException: Bad return code 33 
The descryption process did not complete


Hi Andrés,

sorry, I have no clue either. I suggest that you try your code with the
TPM emulator to verify whether your code is okay or if it is a problem
with your HW TPM. The problem is that most of the available TPMs are not
conform to the TCG specification and therefore many problems occur.

best regards
Frederic


Andrés Rosado Laitinen schrieb:
> I'm using a hardware TPM version 1.2. I tried to deactivate the HMAC 
> verification of the TPM using the code:
>
> TssLowlevel l = TssFactory.getLowlevel();
> l.setCheckReply(false);
>
> but it didn't work. I guess the problem is not due to a wrong HMAC 
> verification. The TPM returns the Bad code 33, but i didn't find any 
> information about it, only the TPM specifications documents by the TGC 
> with no further information.
>
> I hope someone can help me to solve this problem.
>
> Thank you.
>


-- 
Frederic Stumpf                              phone: +49 6151 16 7015
TU Darmstadt -- Department of Computer Science  fax: +49 6151 16 3514
Research Group IT-Security
eMail: st...@se...