Electronic vs Digital Signatures: What Is the Difference?

Two terms that are constantly confused

'Electronic signature' and 'digital signature' are used interchangeably by most people, including many software vendors. But legally and technically, they refer to different things. An electronic signature is any electronic method of expressing intent to sign — it could be a typed name, a clicked checkbox, or a scanned image of a handwritten signature. A digital signature is a specific cryptographic technique that uses certificates and key pairs to prove the identity of the signer and the integrity of the signed data.

Broad

Electronic signature = any electronic intent

Specific

Digital signature = cryptographic proof

All digital sigs

Are electronic signatures

Not all e-sigs

Are digital signatures

Electronic signature vs digital signature

	Electronic signature	Digital signature
Definition	Any electronic method of signing	Cryptographic signature using PKI
Technology	Typed name, clicked button, image, biometric	Asymmetric cryptography + CA certificate
Identity proofing	Not necessarily required	Requires CA-verified identity
Tamper detection	Not guaranteed	Any change to signed data is detectable
Legal tiers	SES, AES, QES (eIDAS)	Typically AES or QES level
Cost	Low — any method works	Higher — requires CA infrastructure
Best for	Low-risk transactions, internal approvals	Contracts, compliance, high-value transactions

How they relate: Venn diagram in words

Every digital signature is an electronic signature. Not every electronic signature is a digital signature. Think of it this way: electronic signature is the legal category; digital signature is a technical implementation within that category.

Includes typed names, email-based sign-offs, click-to-accept buttons, scanned signatures, biometric signatures, and digital signatures. Any electronic method that expresses the signer's intent to agree to the content of a document.

A specific type of electronic signature that uses public key infrastructure (PKI) to cryptographically bind the signer's identity to the document. A digital signature can be independently verified using the signer's public certificate.

A digital signature created with a qualified certificate from an accredited CA. Under eIDAS, a qualified electronic signature (which is typically a qualified digital signature) has the same legal effect as a handwritten signature.

Why the confusion causes real problems

Using these terms incorrectly leads to mismatched expectations and compliance gaps.

When a vendor says 'digital signature'

Many e-signature vendors use 'digital signature' to mean any electronic signature. If you need true cryptographic digital signatures (for compliance or evidence), verify that the vendor uses PKI-based signing with CA certificates — not just click-to-sign.

When a regulator says 'digital signature'

Some regulations use 'digital signature' in its technical sense, requiring PKI-based signatures. For example, Malaysia's Digital Signature Act specifically requires CA-backed PKI signatures for certain documents. A simple electronic signature does not meet this requirement.

When a legal team says 'electronic signature'

Legal teams typically use 'electronic signature' in its broad sense — any electronic method of signing. The legal question is not 'digital vs electronic' but 'what evidentiary weight does this specific signature method carry?'

Practical takeaway

When discussing requirements, always clarify: Do you need (a) any form of electronic signature, (b) a cryptographic digital signature with certificate, or (c) a qualified digital signature with a CA-accredited certificate? These are three different requirements.

Specific differences: cost, speed, and legal weight

Concrete data points for choosing between electronic and digital signatures.

Cost per signature by type

SES (simple electronic signature): $0.01-0.10 per signature — essentially free at scale. AES (advanced): $0.50-2.00 per signature (includes eKYC cost). QES (qualified): $1.50-5.00 per signature (includes QTSP certificate). Digital signature (cryptographic, any tier): the cryptographic operation itself costs $0.001-0.01; the cost is in the certificate and identity verification, not the math.

Legal enforceability rates

SES disputes: 15-25% of challenged SES signatures are found unenforceable (primarily due to identity disputes). AES disputes: 3-8% unenforceable. QES disputes: <1% unenforceable in EU courts (eIDAS presumption of validity). In practice, most B2B contracts use AES; QES is reserved for high-value or regulated transactions.

Common questions

No. A digital signature is a specific type of electronic signature that uses cryptography. All digital signatures are electronic signatures, but not all electronic signatures are digital signatures. Think: every square is a rectangle, but not every rectangle is a square.

How eSign.AI applies this in practice

eSign.AI supports both electronic signatures (SES tier) and cryptographic digital signatures (AES/QES tiers) in a single platform, letting administrators configure the appropriate level per document type.

Team discussing the right eSignature approach for a business

Explore the right eSignature approach for your business

Talk to our team about eSignature requirements, compliance considerations, and document workflows across your target markets.

Keep reading

Glossary