Extract private key from smartcard

Question

1.00/5 (2 votes)

See more:

signature

smartcard

Hello to everyone,

how can I do to extract private key from smartcard?

Thank you very much,
Riccardo.

Posted 16-Jun-15 4:51am

Riccardo Macaluso

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2015-06-16T05:34:00

Solution 1

You don't.
That's the whole idea: it's a private key

And even if it was, you wouldn't get such an answer here: there is no legitimate reason for needing that information, and there are a lot on malicious reasons. I would recommend that you drop this line of questioning, and investigation: you will likely attract the interest of international fraud investigations departments.

We do not condone, support or assist in the production of malicious code in any way, form or manner. This is a professional site for professional developers.

If you want to know how to do such things, you need to visit a hacking site: but be sure to disable all firewalls and antivirus products first or they won't trust you enough to tell you.

Posted 16-Jun-15 5:34am

OriginalGriff

Comments

Riccardo Macaluso 17-Jun-15 3:53am

Thank you for your answer. I have to implement a program to digitally sign XML files with CADes-BES to get ".p7m" files, but I can't do this. I found an example with CNSAPI and I thought that was possible extract smartcard certificate...

Anyway, thank you very much for your help.

OriginalGriff 17-Jun-15 4:19am

You're welcome!
I didn't think you were up to anything nefarious (so I didn't start the process of removing your account) but you wouldn't believe some of the idiots we get asking questions here. :laugh:

And I know nothing about p7m files - if that's what you need help with, then asking a new question about "digitally signing...etc." explaining what you really need help with and what you've tried might get better results. ;)

Hamassss 18-Jun-15 4:52am

Sign XML with CADES-BES ? Are you sure you are to use CADES since Valid XML signature format according to http://www.etsi.org/ for XML is XaDeS which is advanced xml electronic signature ? But nontheless, Point of smart cards is that you should never be able to get private key, even if you are owner, you can just use it VIA PIN to sign files with its private key.
Now it is possible to extract smartcard certificate, but not with its private key ofc, so you can still have cert with public key and subject info extracted if you provide PIN for smartcard. CADES standard is extended version of CMS pkcs 7 standard of PKI infrastructure and it does not require private key in signed file AFAIK. I done Xades signing using smartcards but not CMS or CADES but it should not be any big diffrence.

Hamassss 18-Jun-15 4:59am

And as original griff stated you can make new question with more details of problem so we can see how we can help you