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  6. How to generate a CSR for a Microsoft IIS 10 web server (ECC)

How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


Follow the instructions in this guide to use IIS 10 to create an Elliptic Curve Cryptography (ECC) Certificate Signing Request (CSR).

  1. In the Windows start menu, type MMC and open it:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  2. In MMC, go to File -> Add/Remove Snap-In:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  3. Choose the Certificates snap-in and click Add:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  4. Choose Computer account (to manage certificates system-wide):

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  5. Choose Local Computer, click Finish and press OK to exit the snap-in window:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  6. In the MMC window, expand the following section Certificates (Local Computer) -> Personal -> Certificates

  7. Right-click the Certificates folder and select All Tasks > Advanced Operations > Create Custom Request…

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  8. Click Next on the Certificate Enrollment window

  9. Choose Proceed without enrollment policy. Click Next:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)

  10. Choose CNG Key and the PKCS#10 (these should be the default choice):

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  11. Expand the Details section of the custom request and click Properties:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  12. On the General tab, fill out a Friendly name and Description. These options are for certificate identification in places like IIS & Exchange. This information does not get vetted or appear on the certificate itself

  13. On the Subject tab, you can specify various fields to appear in your CSR. Select the field you wish to populate from the drop-down menu, enter a value, and click Add

  14. Repeat this for each additional field you wish to specify. At a minimum for a Domain Validated certificate, you should have Common Name and Country If you are ordering a Business certificate please specify Common Name, Country, Organization:

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  15. Skip to the Private Key tab and expand the Cryptographic Service Provider. Uncheck the first box for RSA, Microsoft Software Key Storage Provider. Choose one of the ECDSA boxes for an ECC provider. In this instance, the P256 curve is chosen (this is the most common):

    Guide on How to Generate a CSR for a Microsoft IIS 10 Web Server (ECC)


  16. Next, expand the Key Options section. Here you can set the key size (Please set it to a minimum of 256). You can also mark the key as exportable, this is needed if you want to install the certificate on other devices.

  17. Click Apply, then click OK

  18. Click Next to continue the Certificate Enrollment process

  19. Lastly, choose the Base 64 option and click Browse to choose a location for your CSR.

 

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