Re: [Trustedjava-support] Failed to get RSA Exponent using getAttribData

[ravi k. <rk...@ya...>]

Hi Ronald,
 
Thanks for your reply.
Yes I called the create key method. Given below are list of method calls i used
 
objKey.createKey(objsrk, null);
objKey.loadKey(objsrk);
 
objKey.getAttribData(TcTssConstants.TSS_TSPATTRIB_RSAKEY_INFO, TcTssConstants.TSS_TSPATTRIB_KEYINFO_RSA_MODULUS);
 
objKey.getAttribData(TcTssConstants.TSS_TSPATTRIB_RSAKEY_INFO, TcTssConstants.TSS_TSPATTRIB_KEYINFO_RSA_EXPONENT);
 
where objKey is rsa key object of type migratable | legacy and objsrk is the wrapping key.
As said previously in trailing mail i am able to extract public key and modulus but failed to extract only rsa exponent
 
Regards
Ravi
 


________________________________
From: Ronald Tögl <ron...@ia...>
To: Trustedjava IAIK <Tru...@li...> 
Cc: ravi kiran <rk...@ya...> 
Sent: Friday, 19 April 2013 1:36 PM
Subject: Re: [Trustedjava-support] Failed to get RSA Exponent using getAttribData



Hi Ravi,

Did you actually call the createKey() method or did you just create the Java object?

Ronald

On 04/19/2013 09:35 AM, ravi kiran wrote:

Hi 
>
>I recently started working on jTss. 
>I have created a 2048 bit legacy key.
>
>I am getting Internal Software error while trying to export rsa key info using the below method
>
>objKey.getAttribData(TcTssConstants.TSS_TSPATTRIB_RSAKEY_INFO, TcTssConstants.TSS_TSPATTRIB_KEYINFO_RSA_EXPONENT);
>
>The complete error stack is given below
>
>iaik.tc.tss.api.exceptions.tsp.TcTspException: 
>TSS Error:
>error layer:                0x3000 (TSP)
>error code (without layer): 0x04
>error code (full):          0x3004
>error message: An internal SW error has been detected.
>additional info: Getter method did throw unknown exception (not a TcTssException).
>null
>            at iaik.tc.tss.impl.java.tsp.TcAttributes.getAttribData(TcAttributes.java:170).
>
>
>
>but when i try to get rsa modulus using below method call
>
>
>objKey.getAttribData(TcTssConstants.TSS_TSPATTRIB_RSAKEY_INFO, TcTssConstants.TSS_TSPATTRIB_KEYINFO_RSA_MODULUS);
>
>i am getting result without error.
>
>My system configuration is windows7 Ultimate 64 bit,java-64 bit
>
>
>Kindly assist me
> 
>
>Regards
>Ravi
> 
>
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-- 
Dipl.-Ing. Ronald Tögl          phone +43 316/873-5502
Secure and Correct Systems      fax   +43 316/873-5520
IAIK ron...@ia... Graz University of Technology http://www.iaik.tugraz.at/