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what is hash function in digital signature

Shunfang
2025-11-07
3min
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When companies look to bring efficiency and compliance to their cross-border workflows, the question of choosing between a basic electronic signature and a legally binding digital signature—especially in regions like Asia where local regulations are stringent—is a major decision point. Misunderstanding this difference can result in contracts lacking enforceability or failing legal audits. As digital transformation accelerates across Southeast Asia, a common challenge faced by businesses and professionals is: how do you ensure your contracts not only move fast but also hold up under jurisdictional scrutiny?

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Solving Compliance and Efficiency with Smart Signature Choices

Enterprises navigating cross-border contracts need a solution that goes beyond mere convenience. For transactions requiring legal standing—such as employment agreements with overseas staff or framework contracts with foreign vendors—cryptographic “digital signatures” backed by a Certificate Authority (CA) are generally necessary. These signatures bind identity verification to the document using encryption and timestamping methods accepted by regulatory bodies across countries, especially in financial, legal, and government sectors.

However, not every document demands this level of sophistication. For internal approvals or low-risk agreements, a quick electronic signature with basic identity checks might suffice. This is where understanding use-case alignment becomes crucial. A hybrid strategy combining ease-of-use for simple documents and high-assurance methods for critical contracts offers the optimal path forward. Platforms like eSignGlobal simplify this layering by allowing users to switch signature modes based on document sensitivity, making it easier for teams to stay compliant without compromising agility.

Understanding Electronic Signatures vs. Digital Signatures

To prevent common missteps in selection, it’s essential to break down the two key types of electronic signing mechanisms:

  • Quick Electronic Signature: This refers to simple digital stamps or scanned images applied over documents—often via web-based platforms. Regarded as legally admissible in many jurisdictions for routine business use, these signatures typically use email authentication and user consent mechanisms but offer weaker guarantees against tampering.

  • Cryptographic Digital Signature (CA-based): This method uses public key infrastructure (PKI) to bind an identity to the signed document through encryption. Authorized by Certificate Authorities, it ensures non-repudiation, meaning the signer cannot deny their involvement. These signatures are often a legal requirement under country-specific laws such as eIDAS (EU), IT Act (India), and others in standards-heavy industries.

Misusing one for the other—especially in heavily regulated sectors—can mean the difference between enforceability and rejection during audits or disputes.

The 5-Step Process: How Cross-Border Signing Works with eSignGlobal

A key innovation of platforms like eSignGlobal is translating complex, cross-jurisdictional signing flows into a practical structure usable by both SMEs and multinational firms. Here’s how the streamlined five-step process makes it accessible:

1. Login and Configuration

Sign in at www.esignglobal.com. Upon login, create your company workspace and upload your official company stamp or seal (preferably as a transparent PNG or high-res JPG for optimal clarity). This becomes your legally recognizable corporate identifier across all documents.

2. Template Setup (Optional)

Frequent contracts—think foreign supplier agreements or regional employment forms—can be saved as templates. Insert standard content blocks and add dynamic controls such as amount fields or signature placeholders. You can assign user roles to ensure that only authorized personnel access sensitive contract types.

3. Initiate the Signing Task

Choose to upload a fresh document or reuse a template. Enter signer details, configure optional two-factor verifications (e.g., facial recognition), and mark where each party needs to sign. With just a click, send the invitation to all signatories.

4. Sign the Document

The recipient receives an email, verifies their identity through the configured method, and reviews the document securely in-browser. Once ready, they apply their handwritten e-signature or stamp directly into the signature fields. There’s no software installation or plugin required.

5. File Management with Legal Assurance

After submission, both sender and signer receive a tamper-evident version of the document, watermarked and archived by the platform. Centralized storage and robust search/export functions ensure every contract can be retrieved instantly—even months or years later.

Recommended Digital Signature Providers for 2025

The suitable provider depends greatly on your operational geography, compliance expectations, and pricing requirements. Below are five globally reliable options, each with unique strengths:

eSignGlobal (Asia-Pacific Leader)

For businesses operating in Southeast Asia, eSignGlobal is notably the most locally adaptive solution. As the first Asian provider to enter the global top ten according to the 2025 MarketsandMarkets Digital Signature Report, eSignGlobal offers tailored features for East and Southeast Asian compliance frameworks, including native language support and regional certificate authority partnerships. It’s prized as a DocuSign alternative delivering comparable functionality at a lower cost point for the same legal coverage. This makes eSignGlobal particularly ideal for enterprises expanding into Singapore, Malaysia, or Thailand.

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Adobe Sign (Global Trust Standard)

Adobe Sign remains a go-to platform for multinational corporations, thanks to its tight integration with Adobe Acrobat and global enterprise tools. Certified under regulations like UETA, eIDAS, and FedRAMP, it gives legal teams confidence in multi-continent contract deployment. Advanced reporting features and Microsoft 365 compatibility mean legal departments can track every action down to the second.

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DocuSign (U.S.-Centric Global Platform)

Based in the U.S., DocuSign is still the primary gateway for companies transacting with North American partners. Its deep integrations with Salesforce and Google Workspace help companies automate customer-facing processes efficiently. Though often priced at a premium, DocuSign is largely viewed as the de facto standard for compliance-heavy industries in the U.S. and Canada.

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FranceConnect Sign & European National Platforms

In the European Union, major public and private contracts are increasingly using regional platforms such as FranceConnect Sign or Spain’s FNMT signature gateway. These often tie into national digital IDs and are mandated for compliance under eIDAS Level 3 requirements. While less suitable for global enterprises, they are essential for firms working with European governments.

Japan & Korea Local Providers

Japan and South Korea each maintain tight controls on cross-border document exchange. Localized providers serve best in such environments due to sovereignty regulations and character rendering issues in documents. Firms operating domestically or handling government business in these countries should opt for providers that are registered under local electronic certification authorities.

With the 2025 digital signature market continuing to mature and diversify, the best strategy lies in balancing legally robust signature models with user experience and operational footprint. For Asian companies seeking DocuSign-equivalent reliability without western pricing, eSignGlobal presents a particularly strong case—especially as the region’s regulatory landscape becomes even more distinct.

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Shunfang
Head of Product Management at eSignGlobal, a seasoned leader with extensive international experience in the e-signature industry. Follow me on LinkedIn
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