Hungary is a full participant in the EU eIDAS framework and a market with its own widely used document formats. Hungarian official correspondence is frequently exchanged as KRX containers and signed with the DÁP (Digitális Állampolgárság Program) identity scheme.
Supervisory authority
Qualified trust services in Hungary are overseen by NMHH (Nemzeti Média- és Hírközlési Hatóság), which maintains the national trusted list referenced by the EU List of Trusted Lists.
Notable qualified trust service providers
- Microsec (e-Szigno)
- NETLOCK
This is not an exhaustive list — the authoritative, always-current set of qualified providers is Hungary's national trusted list, indexed by the EU LOTL. Sealium validates against the live list, so new providers are recognised automatically.
Formats used in Hungary
Beyond standard PAdES and ASiC, Hungarian workflows rely on the KRX delivery container — which can hold several independently signed documents — and DÁP-issued signatures. Validating these correctly requires unpacking the KRX and resolving the Hungarian national trusted list.
How to validate Hungary signatures
Send the document to the Sealium API and it resolves Hungary's trusted list automatically, returning each signature's eIDAS level, signer, certificate chain, revocation status and timestamps as a structured report — no per-country configuration required.
Frequently asked questions
Is an electronic signature legally valid in Hungary?
Yes. As an EU participant in the eIDAS framework, Hungary recognises electronic signatures, and a qualified electronic signature (QES) has the same legal effect as a handwritten one. Hungary's qualified providers are published on its national trusted list, which is indexed by the EU List of Trusted Lists.
Who publishes Hungary's trusted list?
Hungary's trusted list is published under the supervision of NMHH (Nemzeti Média- és Hírközlési Hatóság) and referenced by the EU List of Trusted Lists.
How do I validate a Hungary electronic signature?
Check the signature against Hungary's national trusted list (via the EU LOTL): verify integrity, build the certificate chain, check revocation and any timestamp, and read the eIDAS level. Sealium does all of this in one /v1/validate API call and returns a structured report.
Which authority publishes Hungary's trusted list?
The Hungarian trusted list is published under the supervision of NMHH (Nemzeti Média- és Hírközlési Hatóság) and referenced by the EU List of Trusted Lists, so Hungarian qualified signatures can be validated across the EU.
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