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Law & compliance

Digital signature

A digital signature cryptographically proves who issued a document and that it has not been altered since — Germany does not require one for e-invoices, several other countries do.

Also:
elektronische Signatur · qualifizierte Signatur
Reviewed on 2026-08-26.

There is no long-form article for this term yet. The definition above is the complete entry; the related terms lead onwards.