Digital vs electronic signatures vs seals: a primer
20 August 2025 · 7 min read · Nextarp B.V.
The words are used interchangeably in conversation and precisely in law. Getting them straight helps you specify the right thing and avoid over- or under-engineering.
Electronic signature: the legal concept
An electronic signature is any electronic indication of intent to agree - a legal category, not a technology. It ranges from a typed name to a cryptographically bound signature. Its legal weight depends on the assurance level behind it.
Digital signature: the technology
A digital signature is the cryptographic mechanism - public-key cryptography binding a signer's certificate to a document so any change is detectable and the signer's identity is provable. It is the machinery that makes advanced and qualified electronic signatures possible.
Electronic seal: for organisations
A seal is the organisational counterpart of a signature. Where a signature says "this person agreed", a seal says "this document originates from this legal entity and is unaltered" - ideal for machine-issued invoices, certificates and statements.
Putting it together
- Need proof a person agreed? An electronic signature, implemented as a digital signature at the required assurance level.
- Need proof a document came from your organisation? An electronic seal.
- Need cross-EU handwritten-equivalent weight? The qualified variants of either.
DocsNG implements digital signatures to deliver advanced and qualified electronic signatures and seals - so you can pick the legal outcome and let the platform handle the cryptography.
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