c# - Use certificate when issuer is not is X509Store trusted roots for client authentication using Microsoft .NET framework -


while working on question, identified problem different stated, changing title , description

i'm trying authenticate myself against webservice using client certificate. using webrequest purpose. need use self-signed certificate, without registering in windows x509 trusted root store.

the way know if client certificate presented or not examining request object on server

i tried use code this question guidance. doesn't work on .net. here code:

            var certificate = new x509certificate2(properties.resources.mycert);             httpwebrequest req = (httpwebrequest)webrequest.create(host);             req.clientcertificates.add(certificate);             webresponse resp = req.getresponse();             var stream = resp.getresponsestream();

what observe though req.clientcertificates contain certificate valid private key, certificate never presented server. no indication webclient certificate not used during handshake.

if put certificate "trusted root", code work (even when certificate not in "personal").

my questions are:

  1. since certificate usable when it's placed in "trusted root", assume due policy or of kind. possible coerce .net ignore policy settings , use supplied client certificate during tls negotiation?

  2. if abovementioned coercion not possible, there call tell me ahead of time, certificate use not usable, , ignored? alternatively, if such call not available, make webclient fail indicating certificate error, instead of silently skipping over?

note: aware configuring certificates described microsoft work. not looking for. don't want register potentially insecure certificate in trusted root, because potentially security hazard. want use cert on client without registering in store, or @ least exception indicating certificate cannot used. realize there can multiple reasons why certificate cannot used session, there must exception, or @ least sort of indication on client side cannot use specified cert. instead, client doesn't present one.

when instantiate x509certificate2, privatekey property set? if null, missing private key, meaning ssl/tls client unable authenticate you.

make sure loading certificate pfx file (or similar) instead of cer. these contain private key, too. password protected purpose. see how retrieve certificates pfx file c#? more info.


-

Comments

Post a Comment

Popular posts from this blog

php - regexp cyrillic filename not matches -

i take list of files php glob(."*.pdf") . files have cyrillic names. example: ООО «Рога и копыта» then load company names database , try find them in file names: preg_match("/$firm_name/ui", $file_name, $match); i have problem: firms if $firm_name visually similar $file_name , preg_match says there no match. mb_detect_encoding both variables return utf-8. there problem in file name, or maybe there encoding or something, can not understand, ask help. upd: $file_name='ООО «Рога и копыта»'; preg_match("/... .Рога и копыта./ui", $file_name, $match); as result, ОО «Рога и копыта» , 1 О missing
Read more

c# - OpenXML hanging while writing elements -

Image
i have program pulls data database, caches file , exports data multiple formats (excel, excel 2003, csv). i'm using openxml sdk 2.0 excel work. these export processes run in parallel (using parallel.foreach ), , amount of data can pretty large - e.g. csvs 800mb. during these larger exports, i've noticed writing of xml documents hang. instance, if have 8 exporting in parallel, @ point "pause". hang around same point: //this.writer openxmlwriter created worksheetpart. this.writer.writeelement(new cell() { cellvalue = new cellvalue(value), datatype = cellvalues.string }); when happens, pause debugger (vs2013 in case) , notice threads blocking around same portion of code - bit deeper in openxml sdk - stem call openxmlwriter.writeelement . i dug through source using justdecompile didn't find answers. appears there intermediary stream in use writing isolated storage , is, reason, blocking. underlying stream each of these filestream . here screenshot ...
Read more

sql - Select Query has unexpected multiple records (MS Access) -

i may tired, can't seem figure out happening. have 2 queries. query 1 has 10 fields. query 2 has 5 fields. fields 1 through 3 same in both queries. trying write select query , simple add field 5 query2 query1 result should query1 additional field (query2.field5). i join first 3 fields both queries , choose select records in query1 , in query2 match. don't know sql, use query designer. expect same number of records have query 1 instead have 3 times or more. can tell me doing wrong. tried reversing joins still seem same records. thanks in advance. here query: the fields in common divisionname , supplierid = vendorid , commodityname . select [part revenue exposed query p1].divisionname, [part revenue exposed query p1].commodityname, [part revenue exposed query p1].suppliername, [part revenue exposed query p1].partnumber, [part revenue exposed query p1].partdescription, [part revenue exposed query p1].bucode, ...
Read more