E-Signature vs Digital Signature

What is E-Signature vs Digital Signature?

The terms "electronic signature" and "digital signature" are often used interchangeably, but they refer to different concepts. An electronic signature is a legal concept — any electronic indication of intent to agree. A digital signature is a technical implementation — a specific cryptographic method for creating a secure, verifiable signature.

Think of it this way: all digital signatures are electronic signatures, but not all electronic signatures are digital signatures. Typing your name in a form field is an electronic signature but not a digital signature. Applying a PKI-based cryptographic seal is both an electronic signature and a digital signature.

The distinction matters for compliance and security. Regulations like eIDAS define three tiers of electronic signatures (simple, advanced, and qualified), with the higher tiers requiring digital signature technology. For most business contracts, a simple electronic signature is legally sufficient. For high-value transactions, regulated industries, or government documents, advanced or qualified electronic signatures using digital signature technology may be required.

When choosing an e-signature solution, understanding this distinction helps you match the right level of security to your use case — avoiding both under-protection of sensitive documents and over-engineering of routine agreements.