hi,

On Nov 10, 2011, at 2:18 PM, Jan Just Keijser wrote:

> Alon Bar-Lev wrote:
>> On Thu, Nov 10, 2011 at 3:10 PM, weizhong qiang <weizhongqi...@gmail.com> 
>> wrote:
>>  
>>> hi Alon,
>>> Sorry that I make you be confused.
>>> 
>>> On Nov 10, 2011, at 1:20 PM, Alon Bar-Lev wrote:
>>> 
>>>    
>>>> On Thu, Nov 10, 2011 at 2:08 PM, weizhong qiang <weizhongqi...@gmail.com> 
>>>> wrote:
>>>>      
>>>>>> OpenSSL is fully compatible with this approach, having RSA object that
>>>>>> can be used for crypto operation without actually having the private
>>>>>> key. This is done via the concept of "engine" which delegate the
>>>>>> crypto calls to the hardware device.
>>>>>>          
>>>>> Should I installed the "engine_pkcs11" to get the nss softoken work?
>>>>> 
>>>>>        
>>>> Hmmm..... What EXACTLY are you trying to do?
>>>>      
>>> I need to use the credential in smart card to generate a proxy credential 
>>> (which will not be inside the softoken) for the use case of Grid computing. 
>>>  (see RFC 3820 for the definition of proxy certificate)
>>> The current solution in Grid use case is that: the EEC credential is 
>>> located as two files (e.g., usercert.pem, userkey.pem). We need to replace 
>>> it because the smart card storage provide more security.
>>> 
>>> Now we choose nss softoken rather than hardware smart card, because of two 
>>> reasons:
>>> 1, in the development stage, we would choose nss softoken, because it 
>>> provide the same interface as hardware device.
>>> 2, in the applications other than Grid, such as web applications, nss 
>>> softoken is more general to be used. So we would like users switch from 
>>> existing web applications to Grid, without the need to manage the two 
>>> files: usercert.pem and userkey.pem
>>> 
>>> 
>>>    
>>>> Why do you use the NSS soft token and access it via OpenSSL?
>>>>      
>>> Our current code (such as the proxy credential generation, TLS 
>>> communication, etc.) is based on OpenSSL. So for the purpose of minimizing 
>>> the development effort, we still need to use OpenSSL.
>>> The reason why I asked how to retrieve private key out, is because with the 
>>> X509 and private key out, I can reuse the current code to generating proxy 
>>> certificate.
>>> 
>>>    
>>>> Either stick with NSS or use OpenSSL.
>>>> Where is the hardware device?
>>>>      
>>> There is no hardware currently. But I thought if my code can contact with 
>>> nss softoken, it can also contact with hardware device, because of the 
>>> pkcs11 standard.
>>> 
>>> 
>>>    
>>>> Which component's PKCS#11 are you trying to access?
>>>>      
>>> Currently only nss softoken.
>>> 
>>> Thanks
>>> Weizhong Qiang
>>> 
>>>    
>>>>>> Try to perform private key operation using the RSA object and see that 
>>>>>> it works.
>>>>>>          
>>>>> Do you mean that I should use RSA_sign instead of X509_sign?
>>>>> 
>>>>>        
>>>> Again,
>>>> I am totally confused from the partial information you present.
>>>> So I cannot know what is best for you, and even why you are using
>>>> pkcs11-helper, as if I understand correctly you do not have hardware
>>>> device at all.
>>>> 
>>>> Alon.
>>>>      
>>>    
>> 
>> OK, so now I understand.
>> So you have standard OpenSSL application that uses X509, RSA for TLS.
>> And you get these from pkcs11-helper, so what exactly is your problem?
>> it should work.
>> _______________________________________________
>> 
>>  
> 
> actually, the problem is that an nss softtoken is not a fully 100% compliant 
> PKCS11 device - see
> https://lists.strongswan.org/pipermail/users/2007-July/001900.html
> for details. I've been looking into the same issue a few years back but never 
> decided to modify the pkcs11-helper code to support the nss softtokens.

I thinks the compliant issue has been solved in pkcs11-helper version 1.08 and 
above. 
The issue has been discussed in this  thread:
http://www.opensc-project.org/pipermail/opensc-user/2009-March/002949.html

Weizhong Qiang

> 
> cheers,
> 
> JJK
> 

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