How to convert a CER certificate file to OpenSSL PFX online

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Catherine Le Nevez
@catherinelenevez
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I physical documents they are bulky, easy to lose and also take time to mimic, however with digital certificates you can get your paperwork done quickly, cheaply and securely.

There are several types of certificates; There are CSR certificates (Certificate Signing Request), this contains relevant information about the company or organization, the KEY, this contains files with code or private key to be able to grant requests, the DERs, this has a format with binary numbers which are a extension of certificates CRT. or CER.



Certificates.CRL are responsible for removing or revoking the certificate, .PKCS12 is used to manipulate Windows files, and there are also CER and PFX certificates, among others.

Il CER certificate is a related security certificate file produced by a certification authority. CER files or certificates allow the browser to check whether a website is accessible, authentic, risk-free, and secure. You can install and export a digital certificate in Windows 10.

In case the certificate is public, the CER check the public key to check if the website is trustworthy. For example, if you want to enter the website and explore it, you can click where the lock appears on the browser page.

There is also the PFX certificate, these are the files with security functions with codes or encryption, these are used in the files of the authentication procedures, with the purpose of knowing if the equipment or the user can enter those files. These files protect and protect your computer from hackers or strangers. can convert them to openssl.

What is openssl?

Openssll is a series of powerful libraries, management and commercial tools, integrated with security protocols and encryption. Openssl is a project by Tim Hudson and Eric Young supported by free software. However, how to install an SSL certificate.



It conforms to the protocols applied in the layer secure socket and in the transport security layer, either in Openssh, HTTPS or web browser.

How to convert CER certificate file to openssl PFX online?

If you want to backup your files by converting a CER certificate file to PFX in openssl online, I will show you how to do it below:

Step 1

Enter the option «Start» press click then go to the option «Run» do again now type «MMC.exe» and click ok. Now choose the option "Console" followed by Add / Remove Plug-in.

Step 2

In the option "Add", click, then the certificates you want to convert, select them and click "Add" again.

3 pass

Now choose the "Computer Account" option and in the "Next" option click, then choose the option "Local computer" and then «Ok», in «Close» click «OK» again.

4 pass

So about the option "Certificates or local computer" click, go to Personal and enter "Certificates" again, then click.


5 pass

Notice that several certificates appear, now choose the one you want to convert, click, then go to «All activities» and then "Export", choose them.

6 pass

Then go to the option "Forward" and click, if you don't see it, repeat step number 5 but restart your computer and perform step 4.

7 pass

Go up "Private key" and then click on the Next option. Then choose "Personal Information Exchange" so you can create the PFX file this way.


8 pass

In "Forward" press click and choose the password that will be entered in the file, then again in «Next press quickly click.

9 pass

Choose the file name and not the file extension, in «Next» click on choose where to save them and to finish click on «Fine».

In case you want to save all your work while converting your certificate, you can learn how to create or generate a certificate in PFX format in an easy way.

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