---
title: "Guides – HARICA"
description: "Code Signing Certificate           Email Certificate           Server Certificate                   eSeal         eSignature               Bulk Certificates         Client Authentication"
language: "en-US"
canonical_url: "https://demo.harica.gr/en/guides"
source_url: "https://demo.harica.gr/en/guides/"
content_type: "text/markdown"
---

Guides[www.harica.gr](https://demo.harica.gr/en/posts/post-author/harica-www)2026-06-22T15:05:51+00:00

- [Code Signing Certificate](#toc_Code_Signing_Certificate)
- [Email Certificate](#toc_Email_Certificate)
- [Server Certificate](#toc_Server_Certificate)
- [eSeal](#toc_eSeal)
- [eSignature](#toc_eSignature)
- [Bulk Certificates](#toc_Bulk_Certificates)
- [Client Authentication](#toc_Client_Authentication)
- [Software](#toc_Software)
- [Developer](#toc_Developer)

## Code Signing Certificate


      [Request for Enterprises or Organizations (EV)](https://demo.harica.gr/en/guides/code-signing-certificate-request-for-enterprises-or-organizations-ev)




      [Request for Enterprises or Organizations (OV)](https://demo.harica.gr/en/guides/code-signing-certificate-request-for-enterprises-or-organizations-ov)




      [Request for Individuals or Sole Proprietorships (IV)](https://demo.harica.gr/en/guides/code-signing-certificate-request-for-individuals-or-sole-proprietorships-iv)



## Email Certificate


      [Email-only Request](https://demo.harica.gr/en/guides/s-mime-certificate-request-for-email-only)




      [Request for Enterprises or Organizations (IV+OV)](https://demo.harica.gr/en/guides/s-mime-certificate-request-for-enterprises-or-organizations-ivov)




      [Request for Enterprises or Organizations (OV)](https://demo.harica.gr/en/guides/s-mime-certificate-request-for-enterprises-or-organizations-ov)




      [Request for Individuals or Sole Proprietorships (IV)](https://demo.harica.gr/en/guides/s-mime-certificate-request-for-individuals-or-sole-proprietorships-iv)



## Server Certificate


      [ACME Instructions](https://demo.harica.gr/en/guides/acme-instructions)




      [Request for Domain Validated (DV)](https://demo.harica.gr/en/guides/domain-validated-dv-ssl-tls-certificate-request)




      [Request for Extended Validated (EV)](https://demo.harica.gr/en/guides/server-certificate-request-for-enterprises-or-organizations-ev)




      [Request for Organization Validated (OV)](https://demo.harica.gr/en/guides/server-certificate-request-for-enterprises-or-organizations-ov)



## eSeal


      [Advanced eSeal Request](https://demo.harica.gr/en/guides/instructions-for-purchasing-advanced-eseal-through-haricas-certmanager)




      [Remote eSeal Request](https://demo.harica.gr/en/guides/instructions-for-purchasing-remote-qualified-eseal-through-haricas-certmanager)



## eSignature


      [Advanced eSignature Request](https://demo.harica.gr/en/guides/advanced-esignature-request)




      [Qualified eSignature Request](https://demo.harica.gr/en/guides/instructions-for-purchasing-qualified-esignature-in-cryptographic-device-token-through-haricas-certmanager)




      [Remote Qualified eSignature Request](https://demo.harica.gr/en/guides/instructions-for-purchasing-remote-qualified-esignature-through-haricas-certmanager)



## Bulk Certificates


      [Bulk Certificates in PKCS12 Format](https://demo.harica.gr/en/guides/bulk-certificates-in-pkcs12-format)




      [Bulk Certificates in PKCS7 Format](https://demo.harica.gr/en/guides/bulk-certificates-in-pkcs7-format)



## Client Authentication


      [Client Authentication IV (User)](https://demo.harica.gr/en/guides/client-authentication-iv-user)




      [Client Authentication OV (Machine)](https://demo.harica.gr/en/guides/client-authentication-ov-machine)



## Software

Acrobat reader


      [Configure Timestamping](https://demo.harica.gr/en/guides/instructions-for-installing-adobe-reader-dc-and-configuring-timestamp-server-on-your-computer)




      [eSign Documents](https://demo.harica.gr/en/guides/instructions-for-signing-pdf-documents-using-remote-esignature-through-adobe-reader-dc)




      [Sign Documents](https://demo.harica.gr/en/guides/instructions-for-signing-pdf-documents-using-adobe-reader-dc)




      [Signature Validity Check](https://demo.harica.gr/en/guides/instructions-for-checking-the-validity-of-a-digitally-signed-pdf-document)



DSA Client


      [Installation](https://demo.harica.gr/en/guides/instructions-for-installing-docusign-signature-appliance-client-on-windows-64-bit)



Safenet Authentication Client


      [Change PIN Using PUK](https://demo.harica.gr/en/guides/instructions-for-setting-a-new-pin-using-puk-on-a-cryptographic-device)




      [Change PIN](https://demo.harica.gr/en/guides/instructions-for-changing-the-pin-token-password-on-a-cryptographic-device)




      [Drivers](https://demo.harica.gr/en/guides/download-safenet-authentication-client)




      [Installation](https://demo.harica.gr/en/guides/instructions-for-installation-of-safenet-authentication-client)



## Developer


      [Register and Log in](https://demo.harica.gr/en/guides/register-and-log-in)




      [Headers](https://demo.harica.gr/en/guides/headers)




      [Request for SSL Certificate (Prevalidated Domains)](https://demo.harica.gr/en/guides/request-for-ssl-certificate-prevalidated-domains)




      [Request for Client Authentication Certificate](https://demo.harica.gr/en/guides/request-client-authentication-certificate)




      [API Keys](https://demo.harica.gr/en/guides/api-keys)