Re: [Opensc-devel] smart card reset after 5 seconds on Windows

[Ludovic R. <lud...@gm...>]

Hello,

I looks like Microsoft added an undocumented registry key to change the 5
seconds delay.

Key CardDisconnectPowerDownDelay in
HK_local_machine\software\microsoft\cryptography\calais
The value defines the delay in seconds.

It also looks like this feature is also present in Windows 7 but with a 30
seconds delay.

This is all untested by me. I am not a Windows user.
I think we have Windows experts here that can confirm the use of this
registry key.

I don't know why Microsoft decided to to that. Maybe that is a good idea
after all.

Regards,

2015-12-13 22:18 GMT+01:00 Douglas E Engert <dee...@gm...>:

> Sounds like a call to SCardStatus resets the 5 second timer.  Could a
> thread be added with a 2 second timer to  to keep the transaction  alive?
> May not help with debugging.
>
>
>
>
> On 12/13/2015 12:42 PM, Jaroslav Imrich wrote:
>
> As a result there are also commercial middleware solutions available out
> there which display their own PIN dialog during the signing operation and
> you need to enter your PIN in less then 5 seconds otherwise signing
> operation fails :)
>
> Regards, Jaroslav
>
>
> On Sun, Dec 13, 2015 at 7:09 PM, Vincent Le Toux <
> <vin...@my...>vin...@my...> wrote:
>
>> Hi,
>>
>> I just want to share something on which I've lost my day before finding
>> this:
>> Since Windows 10 (8?) the card is reset if a smart card transaction is
>> inactive for 5 seconds.
>>
>> Quote: "If a transaction is held on the card for more than five seconds
>> with no operations happening on that card, then the card is reset. Calling
>> any of the Smart Card and Reader Access Functions or Direct Card Access
>> Functions on the card that is transacted results in the timer being reset
>> to continue allowing the transaction to be used."
>> source:
>> https://msdn.microsoft.com/en-us/library/windows/desktop/aa379469%28v=vs.85%29.aspx
>>
>> This timeout was not active on Windows 7.
>> Not easy to attach a debugger to debug OpenSC with that  ...
>>
>> regards,
>> --
>> --
>> Vincent Le Toux
>>
>> My Smart Logon
>> www.mysmartlogon.com
>>
>>
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>>
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>>
>>
>
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> --
>
>  Douglas E. Engert  <DEE...@gm...> <DEE...@gm...>
>
>
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-- 
 Dr. Ludovic Rousseau