IIS Server Security - Client Certificate - Password Check

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Author Client Certificate - Password Check
Mark Pfeifer

2007-08-16, 1:22 pm

Is there a way to determine if the certificate had a pin/password entered
prior to submitting it to a site? That is, can I tell from the server side
if the certificate is from a smart card with a pin or a soft certificate
with a password?

Thanks,
Mark


Ken Schaefer

2007-08-17, 1:18 am

"Mark Pfeifer" <mpfeifer@online.nospam> wrote in message
news:u4nsAvC4HHA.536@TK2MSFTNGP06.phx.gbl...
> Is there a way to determine if the certificate had a pin/password entered
> prior to submitting it to a site? That is, can I tell from the server
> side if the certificate is from a smart card with a pin or a soft
> certificate with a password?


Without running some code on the client - in a nutshell - no. IIS only sees
what's sent in the HTTP header.

Cheers
Ken

--
My IIS Blog: www.adOpenStatic.com/cs/blogs/ken

WenJun Zhang[msft]

2007-08-17, 7:23 am

Hi Mark,

Just as Ken stated, at IIS server side we can only ensure the following two
points of a client certificate:

1. The client certificate is valid and has a corresponding private key for
authentication.

2. Create a Certificate Trust List(CTL) to verify if the client certificate
is issued by a certification Authority(CA) which is recognized and trusted.
If not, deny the client access.

There is indeed no standard approach at web server side to determine if a
client certificate is from smartcard or requires password.

Please update here if you have more concern on this issue.

Thanks and have a nice weekend.

Sincerely,

WenJun Zhang

Microsoft Online Community Support

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