How to Generate a CSR Code on a Windows-Based Server without IIS Manager

How to Generate a CSR Code on a Windows-Based Server without IIS Manager

If you require installing an SSL certificate for a service other than IIS and there is no IIS Manager installed on the Windows server, you may wonder how to generate a CSR code in such a scenario.

Fortunately, there are several workarounds available.

Besides the fact that these workarounds will not provide a wizardous user-friendly interface and require a bit of familiarity with the system management tools, yet they remain very powerful for accomplishing our goal – creating a CSR code, which we can submit to the Certificate Authority during the SSL certificate activation.

So let’s look at each of the methods closer.

CSR generation in MMC (Microsoft Management Console)

បើក វិញ្ញាបនប័ត្រ snap-in in MMC by following these steps: Win + R >> mmc.exe >> OK >> ឯកសារ >> បន្ថែម/លុប Snap-in >> វិញ្ញាបនប័ត្រ >> បន្ថែម >> Computer account >> បន្ទាប់ >> កុំព្យូទ័រក្នុងស្រុក >> បញ្ចប់ >> OK.

ក្នុង ផ្ទាល់ខ្លួន >> វិញ្ញាបនប័ត្រ panel, right-click on the blank space and follow កិច្ចការទាំងអស់ >> ប្រតិបត្តិការកម្រិតខ្ពស់ >> Create Custom Request ដើម្បីបើក Certificate Enrollment wizard:

ត្រូវប្រាកដថាលំនាំដើម Proceed without enrollment policy option is selected and click បន្ទាប់:

On the next screen, leave the pre-selected options (No template) CNG key និង PKCS #10 ហើយចុច បន្ទាប់:

Now we need to open the window, in which we will adjust the certificate request in the way that we can receive the certificate with the correct information and using the required key type. Click the drop-down arrow on the right and then the លក្ខណៈសម្បត្តិ ប៊ូតុង។

Add a friendly name value to the appropriate field so that you can identify this request entry in future. This field is used to give a name to the certificate, which can be the ឈ្មោះដែន name the certificate will be issued for or virtually any other name:

On the next tab called ប្រធានបទ, we need to add a few fields to the request and specify their values. The most essential field types that must be present in the request are:

  • Common name: fully qualified domain name for which the certificate is to be issued
  • Country: 2-letter country code compliant with ISO 3166. The correct code can be checked នៅ​ទីនេះ.
  • State: name of the state or region; can be the same as the city name
  • Locality: city name
  • Organization: company name should be specified here

កត់ចំណាំ: If you need to add subject alternative names to the request, you can do it in the ឈ្មោះជំនួស section. Select the ឈ្មោះ DNS field type and add the domain names one by one:

The result should look similar to this:

The last tab in this window we should open and review is the កូនសោឯកជន. Let’s expand the Cryptographic Service Provider section and have a look. The default option here is the RSA algorithm, which is the industry standard today, although you can opt for “ECDSA” (if you need to issue an ECC certificate) by checking one of the entries on the picture below:

ក្នុង Key options section, if the RSA algorithm is used, make sure that ទំហំគន្លឹះ is set to at least 2048-bit.

កត់ចំណាំ: The certificates based on a key with the size less than 2048-bit are considered to be not secure, and the trusted Certificate Authorities do not issue them anymore.

If you plan to export the certificate, for example, for the installation on another instance, it is required to check the ធ្វើឱ្យសោឯកជនអាចនាំចេញបាន។ ជម្រើស:

Now we can click Ok and move further.

The last screen of the Certificate Enrollment wizard requires us to specify the name of the file the CSR code will be saved into and its location in the file system. Also, make sure that ទ្រង់ទ្រាយឯកសារ ត្រូវបានកំណត់ទៅ មូលដ្ឋាន 64។ បន្ទាប់មកចុចប៊ូតុង បញ្ចប់ button to initiate the private key and CSR generation with the attributes we have set just now:

CSR generation using the Certreq utility

សញ្ញាប័ត្រ is the command line-based utility, which is used mostly for creating and submitting certificate requests and retrieving, accepting and installing responses from Certificate Authorities.

Before we begin working with “certreq”, we need to create a policy file from which the information required for the CSR will be pulled up. Create a new regular text file and open it. Then copy and paste the text from below into the file (select the piece of code either for RSA or ECDSA):

RSA

;—————– request.inf —————–

[កំណែ]
Signature=”$Windows NT$”

[NewRequest]
Subject = “C=US, O=1Byte, CN=example.com, L=ទីក្រុង Los Angeles, S =កាលីហ្វញ៉ា"

KeySpec = 1
KeyLength = 2048
Exportable = TRUE
MachineKeySet = TRUE
SMIME = False
PrivateKeyArchive = FALSE
UserProtected = FALSE
UseExistingKeySet = FALSE
ProviderName = “Microsoft RSA SChannel Cryptographic Provider”
ProviderType = 12
RequestType = PKCS10
KeyUsage = 0xa0
HashAlgorithm = SHA256

[EnhancedKeyUsageExtension]
OID=1.3.6.1.5.5.7.3.1
;———————————————–

អេឌីស៊ីស៊ី

;—————– request.inf —————–

[កំណែ]
Signature=”$Windows NT$”

[NewRequest]
Subject = “C=US, O=1Byte, CN=example.com, L=ទីក្រុង Los Angeles, S =កាលីហ្វញ៉ា"
KeyAlgorithm = ECDSA_P384 ; can be changed to 256 or 521
Exportable = TRUE
MachineKeySet = TRUE
SMIME = False
PrivateKeyArchive = FALSE
UserProtected = FALSE
UseExistingKeySet = FALSE
ProviderName = “Microsoft Software Key Storage Provider”
ProviderType = 12
RequestType = PKCS10
KeyUsage = 0xa0
HashAlgorithm = SHA256

[EnhancedKeyUsageExtension]
OID=1.3.6.1.5.5.7.3.1
;———————————————–

ចំណាំ: You can add the street address value to the CSR code by specifying the ផ្លូវ អថេរនៅក្នុង ប្រធានបទ directive as follows:

Subject = “ CN=example.com, C=US, O=1Byte, L=Los Angeles, S=California , Street= Test Avenue 1″

Make sure that you change the values highlighted in black with the values that would be valid for your request. Then save the file as the .inf type (request.inf, for instance):

Now we can open the command line prompt: Win + R >> cmd >> បញ្ចូល.

Navigate to the folder in which the policy file is saved using the “cd” command:

CDC:\

Run the following command to initiate the CSR generation:

certreq.exe -new សំណើ.inf nctest.csr

ប្រសិនបើការ Request Created message appears in response to the command, the CSR code is created and saved into the .csr file (nctest_ecdsa.csr in the example above).

CSR generation through Powershell

If you are a fan of scripting and used to doing certain routine tasks in Powershell, you’ll definitely like the following script, designed for the CSR generation with a 2048-bit RSA key.

Open the Powershell console by running:

Win + R >> powershell >> បញ្ចូល.

Then use the command to create new file for the script code:

start notepad script_file_name.ps1

*Where script_file_name.ps1 is the script file and can have any suitable name.

In the opened Notepad window, paste the whole code from នៅ​ទីនេះ and save the file by pressing បញ្ជា (Ctrl) + S ឬដោយប្រើឯកសារ ឯកសារ >> រក្សាទុក​ជា ម៉ឺនុយ។

Next, run the following command in your PowerShell:

.\script_file_name.ps1

*Where script_file_name.ps1 is the name you used for your script file.

The prompt, resembling OpenSSL in some way, will ask you to enter Common Name, organization, organization unit, city, state and country values.

កត់ចំណាំ: When you are asked to provide the subject alternative names, you can either specify them if it is required or simply omit this step by pressing Enter.

Finally, the Powershell window will produce the summary of the provided information, hashing and key algorithm details and the CSR code, offering to copy the CSR to clipboard right away:

When the CSR code is generated using any of the methods described above, you can proceed with the SSL certificate activation.