authentication - How can you add a Certificate to WebClient in Powershell -

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i wan't examine webpage requires client side certificate authentication. how can provide cert certstore webrequest: there way specify in credentials odr within proxy?

$webclient = new-object net.webclient # next 5 lines required if network has proxy server $webclient.credentials = [system.net.credentialcache]::defaultcredentials if($webclient.proxy -ne $null)     {     $webclient.proxy.credentials = `             [system.net.credentialcache]::defaultnetworkcredentials } # main call $output = $webclient.downloadstring("$url")

ps: maybe helps: how can add certificate webclient (c#)? don't it.. ;-)

using new add-type functionality in powershell v2, can craft custom class can use make typical webrequest. have included method on custom class allow add certificates can used authentication.

ps c:\> $def = @" public class clientcertwebclient : system.net.webclient {     system.net.httpwebrequest request = null;     system.security.cryptography.x509certificates.x509certificatecollection certificates = null;       protected override system.net.webrequest getwebrequest(system.uri address)      {          request = (system.net.httpwebrequest)base.getwebrequest(address);          if (certificates != null)          {              request.clientcertificates.addrange(certificates);          }          return request;      }       public void addcerts(system.security.cryptography.x509certificates.x509certificate[] certs)      {          if (certificates == null)          {              certificates = new system.security.cryptography.x509certificates.x509certificatecollection();          }          if (request != null)          {              request.clientcertificates.addrange(certs);          }          certificates.addrange(certs);      }  }  "@  ps c:\> add-type -typedefinition $def

you perhaps want limit certificates being added 1 (or ones) want use rather use every available certificate in current user store, here example loads of them:

ps c:\> $wc = new-object clientcertwebclient ps c:\> $certs = dir cert:\currentuser\my ps c:\> $wc.addcerts($certs) ps c:\> $wc.downloadstring("http://stackoverflow.com")

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