---
title: "Client Authentication OV (Machine) – HARICA"
description: "1.Log in to HARICA CertManager   Visit HARICA’s CertManager and sign up to create your account. Your personal information must be accurate and fully matched (letter-by-letter) with a government-issued identification"
language: "en-US"
canonical_url: "https://demo.harica.gr/en/guides/client-authentication-ov-machine"
source_url: "https://demo.harica.gr/en/guides/client-authentication-ov-machine/"
content_type: "text/markdown"
---

Client Authentication OV (Machine)[Alkisti Vasilika Patsarasli](https://demo.harica.gr/en/posts/post-author/valkisti)2026-06-22T15:05:28+00:00

- [1.Log in to HARICA CertManager](#Step1)
- [2.Request for Client Authentcation Certificate](#Step2)
- [3.Fill in organization information](#Step3)
- [4.Review and submit request](#Step4)
- [5.Wait for validation](#Step5)
- [6.Enroll certificate](#Step6)
- [7.Get certificate](#Step7)

## 1.Log in to HARICA CertManager

Visit HARICA’s [CertManager](https://cm.harica.gr/Login) and [sign up](https://cm.harica.gr/Register) to create your account.

Your personal information must be accurate and fully matched (letter-by-letter) with a government-issued identification document.

## 2.Request for Client Authentcation Certificate

Once you log in, from the side bar, click **Client Authentication** and **Select** one of the following certificate types.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_2a.png)

Make sure that it is Selected and click **Next**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_2b.png)

## 3.Fill in organization information

Fill in all the required information regarding your organization. Then, click **Next**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_3a.png)

## 4.Review and submit request

Check to make sure that all of the information is correct, accept the [Terms of Use](https://repo.harica.gr/documents/SA-ToU.pdf), the [Certification Practices ](https://repo.harica.gr/documents/CPS-EN.pdf) of HARICA and the [Data Privacy Statement](https://repo.harica.gr/documents/Data-Privacy-Statement-EN.pdf). Then, click **Submit Request**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_4a.png)

## 5.Wait for validation

Now, your request needs to be approved by HARICA’s validators, who will check and verify the data that you have submitted.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_5a.png)

## 6.Enroll certificate

When the validation is completed, you can proceed with the certificate enrollment. Click **Enroll your Certificate**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_6a.png)

You have the option to generate your certificate in .p12 format or submit a CSR file you have already prepared (e.g. using openssl). The **Generate Certificate** option requires you to select the key type/size and set a passphrase that you must remember since it will protect the private key of your certificate. Click **Enroll Certificate**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_6b.png)

## 7.Get certificate

When the enrollment process is completed, you can download your certificate. Click **Download**.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_7a.png)

If the process has been completed successfully, a file named Certificate.p12 will be downloaded to the Downloads folder (by default) of your computer.

Run this file to install the certificate on your computer.

![](https://demo.harica.gr/wp-content/uploads/2025/05/Client-OV_7b.png)