Digital Signatures vs. Electronic Signatures

Today, many types of business and legal documents no longer require people to use ink on paper. Instead, a valid signature can be completed electronically or digitally. 

Although the terms are often used interchangeably, there are significant differences between a digital signature vs an electronic signature. These include what types of agreements or documents they are typically used for, whether they meet compliance requirements, security concerns, and more.

Digital forgeries are on the rise. That makes validating the authenticity and integrity of a document increasingly essential. While electronic signatures (often renderings or an image of a handwritten signature or even a simple check mark) are commonly used for documents like delivery receipts and simple contracts, digital signatures are increasingly deployed in situations where a higher level of security and validation is necessary.

Having a clear understanding of the nature of electronic vs digital signatures helps ensure compliance with industry regulations, efficient use of resources, and strong security.

• An electronic signature refers to any method of signing a document electronically. Digital signatures are a subset of electronic signatures that incorporate greater authentication and verification.
• Electronic signature types range from simple “type/click to sign” to digital signatures that use cryptography and certificates to verify signer identity and document integrity.
• Simple electronic signatures offer speed and convenience, but agreements and contracts that involve sensitive data or high-value transactions often require the additional assurance that digital signatures offer.
• Digital signatures align with many legal and industry standards by providing assurance, tamper protection, and long-term auditability.
• The complexity of business operations requires organizations to ensure they choose the right type of electronic signature for various needs, from basic internal forms to major contracts.

An electronic signature is a type of signature that is done electronically and adopted with the intent to sign a document. It typically replaces the “signing by hand” process and digitalizes the signing process. This type of signature is often used in PDF documents or to sign documents via third-party apps.

Electronic signatures include typed signatures, an image of a signature, and features that allow the user to click or check a box. They provide a fast, easy, and inexpensive method for signing documents compared to the need to print, sign, scan, or mail physical copies.

Countries have adopted legislation outlining the legally binding nature of electronic signatures, such as the Electronic Signatures in Global and National Commerce Act (ESIGN) in the U.S. and the electronic Identification and Trust Services regulation (eIDAS) in the EU. These require certain provisions, such as maintaining documentation of signer consent.

However, unlike digital signatures, there is no requirement for mechanisms (such as certificate authorities) that provide identity assurance, protection against tampering, or documentation for long-term auditability. This makes basic electronic signatures unsuitable for industries facing higher security risks.

A digital signature is a type of electronic signature, but with greater security and verification to prevent fraud during the sending and receiving process.

The signing process uses public key infrastructure (PKI) technology, pairing a signature with a cryptographic key and a trusted digital certificate, which are used to confirm the identity of the signer and ensure that the document hasn’t been altered in any way. This creates a tamper-evident seal: if anything in the content of the document changes after signing, the change is flagged and the signature is rendered invalid.

Because they incorporate these advanced security mechanisms, digital signatures offer legal defensibility in highly regulated industries or workflows with sensitive and private data, such as healthcare and government operations. The cryptographic certificate, timestamping, and evidence of tampering provide a verifiable chain of trust, turning a signature into proof, not just a mark on a document.

In this way, digital signatures help reduce risk while providing a high level of security and trust. By incorporating cryptography, identity verification, and compliance-grade security, organizations can be confident that their signing processes meet the required standards.

An electronic signature is a generic term to represent a consent or approval, whether it uses an image, a drawing, or a symbol to verify a document. It does not always come with a proof of identity: Anyone could upload an image of a signature— it does not have the necessary authority to validate the identity of the signers.

In contrast, digital signatures are a subset of electronic signatures. They include an electronic fingerprint supported by PKI technology via digital certificates that contain verified identity details of the signer. Digital signatures are generally considered more secure than electronic signatures because they provide better guarantees about the identity of the signer and the authenticity and integrity of signed documents.

Both electronic and digital signatures are legal in most countries, but sometimes with significant differences. Understanding them is critical for organizations with high compliance and security standards, as well as the need for confidence when faced with an audit or legal challenge.

While electronic signatures are generally easier to use and widely accepted for everyday business transactions, identity validation is weaker, enforceability often depends on contextual factors, and there may not be a legally defensible audit trail. 

Digital signatures add cryptographic binding and identity verification, sealing documents to prevent tampering. This supports compliance with industry and region-specific frameworks that govern sensitive or high-risk workflows. Internationally recognized standards like AES (Advanced Electronic Signature), which adds verification steps to confirm who signed and links the signature to the document so tampering can be detected, and QES (Qualified Electronic Signature), which requires government-approved certificates and identity validation, provide a legally enforceable level of assurance.

When signed documents face a legal challenge, such as during audits, disputes, or regulatory reviews, organizations often need to provide proof of authenticity and integrity. Digital signatures typically provide the level of assurance needed to meet those requirements.

For example, during a legal dispute, a court may require proof of signature to determine whether a contract is valid and enforceable. With a digital signature, the contract embeds directly to the cryptographic certificate tied to the signer’s identity as well as an audit trail showing when and how the document was signed. This helps the company show evidence of intent, authenticity, and document integrity.

Both electronic and digital signatures simplify the approval process, but they are used for different purposes. Choosing between a digital signature vs electronic signature comes down to one question: how much assurance does this document require? 

Electronic signatures are best when the goal is speed and convenience: typical low-risk workflows where trust is already established and there is no need for cryptographic-level assurance that might introduce unnecessary user friction. These might include:

• Simple acknowledgments and internal approvals
• Sign-offs on internal memos
• Agreements between individuals where risks of disputes are low

Because they provide stronger authentication, tamper detection, and auditability, digital signatures are better for agreements involving sensitive information, high-value transactions, or where a document could potentially be challenged in court later. These situations warrant the additional effort involved in procuring them.

Some examples where organizations need the enhanced protection and assurance of digital signatures could be:

• Government contracts
• Banking or loan paperwork
• Healthcare authorizations
• Agreements regarding valuable intellectual property
• Legal documents for real estate transactions or licensing agreements

Since the nature of risk varies widely by organizational size, industry, and function, leaders must be thoughtful about aligning signature types to their specific needs and potential compliance requirements.

Organizations need the flexibility and tools to choose the right level of assurance for document signing across a wide variety of operational departments and agreement types, from internal HR signoffs to international sales contracts. Digital signing solutions ensure that signature workflows are streamlined and that signatures are verifiable and defensible when required, supporting compliance with legal frameworks and industry regulations.

Entrust Signhost is electronic signature software that incorporates a focus on policy control and identity-first integration, enabling teams to nimbly manage document signing according to risk and operational needs, whether documents are routine agreements or high-value, sensitive contracts with partners, vendors, and customers. 

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