E-Signature vs Digital Signature: What's the Difference?
Understanding the key differences between electronic signatures and digital signatures. Learn which one you need for your documents.
The Short Answer
An electronic signature is a broad legal concept — any electronic indication of agreement. A digital signature is a specific technology that uses cryptographic algorithms to secure and verify documents. All digital signatures are electronic signatures, but not all electronic signatures are digital signatures.
Electronic Signatures Explained
Electronic signatures encompass any electronic method of indicating consent or agreement. This includes:
- Drawing your signature with a mouse, stylus, or finger on a touchscreen
- Typing your name in a signature field
- Clicking an "I Accept" or "I Agree" button
- Pasting an image of your handwritten signature
- Using a PIN or password to authorize a transaction
The focus is on intent — did the person intend to sign? Electronic signatures are governed by laws like the ESIGN Act, UETA, and eIDAS.
Digital Signatures Explained
Digital signatures are a subset of electronic signatures that use public-key cryptography (also called asymmetric encryption) to:
- Verify the signer's identity — Using a digital certificate issued by a Certificate Authority (CA)
- Ensure document integrity — Any modification after signing invalidates the signature
- Provide non-repudiation — The signer cannot deny having signed the document
Digital signatures involve a mathematical algorithm that generates a unique hash of the document, encrypts it with the signer's private key, and attaches it to the document. Anyone with the signer's public key can verify the signature.
Side-by-Side Comparison
| Feature | Electronic Signature | Digital Signature |
|---|---|---|
| Technology | Various (drawn, typed, clicked) | Cryptographic algorithms (PKI) |
| Identity Verification | Email-based, basic | Certificate Authority verified |
| Tamper Detection | Audit trail based | Cryptographic hash verification |
| Legal Standing | Valid under ESIGN/UETA/eIDAS | Valid, often higher assurance |
| Cost | Low to moderate | Higher (certificate costs) |
| Complexity | Simple, user-friendly | More complex setup |
| Best For | Most business documents | High-security, regulated industries |
Which One Do You Need?
For the vast majority of business use cases — contracts, agreements, proposals, invoices, NDAs, HR documents — a standard electronic signature is sufficient. It's legally binding, widely accepted, and much simpler to implement.
You may need a digital signature if you're working in:
- Government procurement or filings
- Regulated financial services
- Healthcare with strict compliance requirements
- International transactions requiring qualified electronic signatures (QES)
DottiSign Uses Electronic Signatures
DottiSign provides legally binding electronic signatures with a complete audit trail — perfect for contracts, agreements, and everyday business documents. No certificates to manage, no complex setup. Upload, sign, done.