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Formats of certificates and qualified certificates

Formats of certificates and qualified certificates 2025

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The document outlines the formats and technical requirements for qualified certificates and maintenance certificates as mandated by the National Security Authority (NSA) of Slovakia. It specifies the structure, content, and identification methods necessary for qualified electronic signatures (QES) to ensure compatibility within the European Union's electronic signature framework. The document includes detailed tables defining various certificate formats, examples of qualified certificates, and references to relevant legislation and standards.

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What are the 3 types of certificates?

A qualified certificate is a public key certificate that is issued by a qualified trust service provider (QTSP) to meet EU regulations such as eIDAS, or the Electrionic Identification and Trust Services regulation. Requirements include face-to-face verification of the user and photo ID.

Are .cer and .crt the same?

PEM format This is the most commonly used format for storing certificates. Most servers (such as Apache or nginx) use the private key and certificate in two separate test files. We often refer to PEM as text format, because it is encoded in Base64.

What are qualified certificates?

CRT files are often in PEM format and used in Unix/Linux systems, while . CER files are typically in DER or PEM format and associated with Windows systems. Functionally, they serve the same purpose. Using one file extension is often a matter of preference or system-specific conventions.

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