---
type: source
title: "URZ: Sperrung von Zertifikaten"
tags: [certificates, pki, security, revocation]
related: [certificate-revocation, sectigo-portal]
created: 2026-06-30
updated: 2026-06-30
sources: ["output/rz_uni_greifswald_de_dienste_allgemein_speerung_von_zertifikaten.md"]
---

# URZ: Sperrung von Zertifikaten

This source provides instructions on how to revoke digital certificates issued through the university's PKI infrastructure before their scheduled expiration date.

## Key Information
- **Reason for Revocation**: Certificates must be revoked if the secret (private) key has been compromised.
- **Applicability**: This process applies to [[dfn-pki-zertifikate]], including [[nutzerzertifikate]], [[gruppenzertifikate]], and [[serverzertifikate]].

## Revocation Methods
The Universitätsrechenzentrum (URZ) provides two primary methods for certificate revocation:
1. **Manual Request**: Users can contact the URZ directly via the [[groupware]] ticket system or the URZ hotline (ext. 1420).
2. **Self-Service**: Users who configured a **Revocation PIN (Sperr-PIN)** during the initial application process can revoke their certificates independently via the [[sectigo-portal]].
