Generate Pfx File From Private Key

I need .pfx file to install https on website on IIS.

I have two separate files: certificate (.cer or pem) and private key (.crt) but IIS accepts only .pfx files.

I obviously installed certificate and it is available in certificate manager (mmc) but when I select Certificate Export Wizard I cannot select PFX format (it’s greyed out)

Are there any tools to do that or C# examples of doing that programtically?

When you're creating a.pfx, you'll need a copy of the private key from your server, as well as the.crt file that you downloaded from GoDaddy. You can use OpenSSL commands in command line to create the PFX, I'm including a sample below: openssl pkcs12 -export -out certificate.pfx -inkey. To create a.pfx file, the SSL certificate and its corresponding private key must be on the same computer/workstation. You may need to import the certificate to the computer that has the associated private key stored on it. (e.g., the laptop/desktop computer where you created the CSR) before you can successfully export it as a.pfx file. How can I find the private key for my SSL certificate. If you just got an issued SSL certificate and are having a hard time finding the corresponding private key, this article can help you to find that one and only key for your certificate.

Answers:

May 15, 2015  This article will show you how to combine a private key with a.p7b certificate file to create a.pfx file on Windows Internet Information Server (IIS). These instructions presume that you have already used “Create Certificate Request” from within IIS to generate a private key and CSR on the server/laptop you are using.

You will need to use openssl.

openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt

The key file is just a text file with your private key in it.

You can install openssl from here: openssl

Generate Pfx File From Private Key
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The Microsoft Pvk2Pfx command line utility seems to have the functionality you need:

Pvk2Pfx (Pvk2Pfx.exe) is a command-line tool copies public key and private key information contained in .spc, .cer, and .pvk files to a Personal Information Exchange (.pfx) file.
http://msdn.microsoft.com/en-us/library/windows/hardware/ff550672(v=vs.85).aspx

Note: if you need/want/prefer a C# solution, then you may want to consider using the http://www.bouncycastle.org/ api.

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If you’re looking for a Windows GUI, check out DigiCert. I just used this and it was fairly simple.

Under the SSL tab, I first Imported the Certificate. Then once I selected the Certificate I was able to export as a PFX, both with and without a keyfile.

Create Pfx File From Crt And Private Key

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You do NOT need openssl or makecert or any of that. You also don’t need the personal key given to you by your CA. I can almost guarantee that the problem is that you expect to be able to use the key and cer files provided by your CA but they aren’t based on “the IIS way”. I’m so tired of seeing bad and difficult info out here that I decided to blog the subject and the solution. When you realize what’s going on and see how easy it is, you will want to hug me 🙂

SSL Certs for IIS with PFX once and for all – SSL and IIS Explained – http://rainabba.blogspot.com/2014/03/ssl-certs-for-iis-with-pfx-once-and-for.html

Use IIS “Server Certificates” UI to “Generate Certificate Request” (the details of this request are out of the scope of this article but those details are critical). This will give you a CSR prepped for IIS. You then give that CSR to your CA and ask for a certificate. Then you take the CER/CRT file they give you, go back to IIS, “Complete Certificate Request” in the same place you generated the request. It may ask for a .CER and you might have a .CRT. They are the same thing. Just change the extension or use the . extension drop-down to select your .CRT. Now provide a proper “friendly name” (*.yourdomain.com, yourdomain.com, foo.yourdomain.com, etc.) THIS IS IMPORTANT! This MUST match what you setup the CSR for and what your CA provided you. If you asked for a wildcard, your CA must have approved and generated a wildcard and you must use the same. If your CSR was generated for foo.yourdomain.com, you MUST provide the same at this step.

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I got a link with your requirement.Combine CRT and KEY Files into a PFX with OpenSSL

Extracts from the above link:

Generate Pfx File From Private Keyboard

First we need to extract the root CA certificate from the existing
.crt file, because we need this later. So open up the .crt and click
on the Certification Path tab.

Click the topmost certificate (In this case VeriSign) and hit View
Certificate. Select the Details tab and hit Copy to File…

Select Base-64 encoded X.509 (.CER) certificate Save it as rootca.cer
or something similar. Place it in the same folder as the other files.

Rename it from rootca.cer to rootca.crt Now we should have 3 files in
our folder from which we can create a PFX file.

Here is where we need OpenSSL. We can either download and install it
on Windows, or simply open terminal on OSX.

EDIT:

  1. There is a support link with step by step information on how to do install the certificate.

  2. After successfully install, export the certificate, choose .pfx format, include private key.

    Important Note: : To export the certificate in .pfx format you need to follow the steps on the same machine from which you have requested the certificate.

  3. The imported file can be uploaded to server.

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You need to use the makecert tool.

Open a command prompt as admin and type the following:

Where <CertifcateName> = the name of your cert to create.

Then you can open the Certificate Manager snap-in for the management console by typing certmgr.msc in the Start menu, click personal > certificates > and your cert should be available.

Here is an article.

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This is BY FAR the easiest way to convert *.cer to *.pfx files:

Just download the portable certificate converter from DigiCert:
https://www.digicert.com/util/pfx-certificate-management-utility-import-export-instructions.htm

Execute it, select a file and get your *.pfx!!

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When you say the certificate is available in MMC, is it available under “Current User” or “Local Computer”? I’ve found that I can only export the private key if it is under Local Computer.

You can add the snap in for Certificates to MMC and choose which account it should manage certificates for. Choose Local Computer. If your certificate is not there, import it by right clicking the store and choosing All Tasks > Import.

Now navigate to your imported certificate under the Local Computer version of the certificate snap in. Right click the certificate and choose All Tasks > Export. The second page of the export wizard should ask if you want to export the private key. Select Yes. The PFX option will now be the only one available (it is grayed out if you select no and the option to export the private key isn’t available under the Current User account).

You’ll be asked to set a password for the PFX file and then to set the certificate name.

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(( relevant quotes from the article are below ))

Next, you have to create the .pfx file that you will use to sign your deployments. Open a Command Prompt window, and type the following command:

where:

(Optionally (and not for the OP, but for future readers), you can create the .cer and .pvk file from scratch) (you would do this BEFORE the above). note the mm/dd/yyyy are placeholders for start and end dates. see msdn article for full documentation.

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I created .pfx file from .key and .pem files.

Like this openssl pkcs12 -inkey rootCA.key -in rootCA.pem -export -out rootCA.pfx

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I was having the same issue. My problem was that the computer that generated the initial certificate request had crashed before the extended ssl validation process was completed. I needed to generate a new private key and then import the updated certificate from the certificate provider. If the private key doesn’t exist on your computer then you can’t export the certificate as pfx. They option is greyed out.

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I know a few users have talked about installing this and that and adding command lines programmes and downloading…

Personally I am lazy and find all these methods cumbersome and slow, plus I don’t want to download anything and find the correct cmd lines if I don’t have to.

Best way for me on my personal IIS server is to use RapidSSLOnline. This is a tool that’s on a server allows you to upload your certificate and private key and is able to generate a pfx file for you that you can directly import into IIS.

Create Pfx From Public And Private Key

The link is here:
https://www.rapidsslonline.com/ssl-tools/ssl-converter.php

Below is the steps used for the scenario requested.

  1. Select Current Type = PEM
  2. Change for = PFX
  3. Upload your certificate
  4. Upload your private key
  5. If you have ROOT CA cert or intermediate certs upload them too
  6. Set a password of your choosing, used in IIS
  7. Click the reCaptcha to prove you’re not a bot
  8. Click Convert

And that’s it you should have a PFX downloaded and use this in your Import process on IIS.

Hope this helps other like minded, lazy tech people.

Pfx
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In most of the cases, if you are unable to export the certificate as a PFX (including the private key) is because MMC/IIS cannot find/don’t have access to the private key (used to generate the CSR). These are the steps I followed to fix this issue:

  • Run MMC as Admin
    • Generate the CSR using MMC. Follow this instructions to make the certificate exportable.
  • Once you get the certificate from the CA (crt + p7b), import them (PersonalCertificates, and Intermediate Certification AuthorityCertificates)
  • IMPORTANT: Right-click your new certificate (PersonalCertificates) All Tasks.Manage Private Key, and assign permissions to your account or Everyone (risky!). You can go back to previous permissions once you have finished.
  • Now, right-click the certificate and select All Tasks.Export, and you should be able to export the certificate including the private key as a PFX file, and you can upload it to Azure!

Hope this helps!

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Although it is probably easiest to generate a new CSR using IIS (like @rainabba said), assuming you have the intermediate certificates there are some online converters out there – for instance:
https://www.sslshopper.com/ssl-converter.html

This will allow you to create a PFX from your certificate and private key without having to install another program.

Tags: file

Exporting Your SSL Certificate from a Microsoft Server for Importing to Another Microsoft Server

Background

Windows servers use .pfx files that contain the public key file (SSL certificate file) and the associated private key file. DigiCert provides your SSL certificate file (public key file). You use your server to generate the associated private key file as part of the CSR.

You need both the public and private keys for an SSL certificate to function. So, if you need to transfer your SSL certificates from one server to another, you need to export is as a .pfx file.

Export Prerequisite

To create a .pfx file, the SSL certificate and its corresponding private key must be on the same computer/workstation. You may need to import the certificate to the computer that has the associated private key stored on it. (e.g., the laptop/desktop computer where you created the CSR) before you can successfully export it as a .pfx file.

For help importing the certificate, see SSL Certificate Importing Instructions: DigiCert Certificate Utility.

How to Export Your SSL Certificate w/Private Key Using the DigiCert Certificate Utility

These instructions explain how to export an installed SSL certificate from a Microsoft server and its corresponding private key as a .pfx file for importing to another server. If you need your SSL Certificate in Apache .key format, please see Export a Windows SSL Certificate to an Apache Server (PEM Format).

How To Create .pfx File From Private Key

  1. On your Windows Server, download and save the DigiCert® Certificate Utility for Windows executable (DigiCertUtil.exe).

  2. Run the DigiCert® Certificate Utility for Windows (double-click DigiCertUtil).

  3. In the DigiCert Certificate Utility for Windows©, click SSL (gold lock), select the certificate that you want to export as a .pfx file, and then click Export Certificate.

  4. In the Certificate Export wizard, select Yes, export the private key, select pfx file, and then check Include all certificates in the certification path if possible, and finally, click Next.

    A .pfx file uses the same format as a .p12 or PKCS12 file.

    Note: If the Yes, export the private key option is grayed out (not unusable), the certificate's matching private key is not on that computer. This prevents you from being able to create the .pfx certificate file. To fix this problem, you will need to import the certificate to the same machine where the certificate's CSR was created. See Export Prerequisite.

  5. In the Password and Confirm Password boxes, enter and confirm your password, and then, click Next.

    Note: This password is used when you import this SSL certificate onto other Windows type servers or other servers or devices that accept a .pfx file.

  6. In the File name box, click to browse for and select the location and file name where you want to save the .pfx file, provide a file name (i.e. mySSLCertificate), click Save, and then, click Finish.

  7. After you receive the 'Your certificate and key have been successfully exported' message, click OK.

Import PFX Certificate into Microsoft Windows Server and Configure it

To import your certificate to your server using the DigiCert Certificate Utility, you need to follow the instructions for that particular server type:

IIS 10Exchange 2013
IIS 8Exchange 2010
IIS 7Exchange 2007
IIS 6

Troubleshooting

After importing your certificate on to the new server, if you run into certificate errors, try repairing your certificate trust errors using DigiCert® Certificate Utility for Windows. If this does not fix the errors, contact support.

Test Your Installation

Ssl generate public private key. To verify that the installation is correct, use our DigiCert® SSL Installation Diagnostics Tool and enter the DNS name of the site (e.g., www.yourdomain.com, or mail.yourdomain.com) that you are securing to test your SSL certificate.

Create Pfx From Cer File