Encryption and Digital Signature for Secure Signing
Award-winning eSignature solution
What encryption and digital signature means
Encryption and digital signature combine two protections for electronic documents. Encryption turns readable data into coded text so unauthorized users can’t view it, while a digital signature verifies who signed the file and helps detect changes after signing. In U.S. business workflows, the combination supports secure document exchange, signer attribution, and evidence of integrity. SignNow applies these controls through signing workflows, audit trails, and compliance features that help teams manage records under ESIGN, UETA, and industry-specific requirements.
Why encryption and digital signature matter
Encryption and digital signature help U.S. businesses protect sensitive records, verify who signed them, and preserve evidence of integrity. Under ESIGN and UETA, properly captured electronic signatures can carry legal effect, while SignNow adds audit trails and compliance controls that support regulated workflows.
Key features and benefits
SignNow combines signing, recordkeeping, and control features that help teams handle electronic documents with more consistency and evidence.
Secure records
Protect signed files with controlled access, audit trails, and encryption that support secure document handling across teams and devices.
Signer verification
Verify signer identity with authentication options that help tie each signature to a specific person and specific record.
Audit evidence
Track every action with time-stamped history that supports review, dispute handling, and internal compliance checks.
Workflow control
Use templates and delegated sending to standardize repeated forms while keeping permissions under admin control.
Cross-device access
Support mobile and browser-based signing for teams that need desktop, iOS, or Android access.
Record retention
Store completed records with retention practices that make later retrieval easier for audits and legal review.
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Security and compliance snapshot
Encryption in transit:
Encryption at rest:
SOC 2 Type II:
ISO 27001:
GDPR:
HIPAA:
How encryption and digital signature works
Encryption and digital signature protect document content, verify signer identity, and preserve a complete record of each action across the signing process.
Upload: The sender uploads the document, and SignNow prepares it for signing. Verify: Each signer verifies identity with the chosen authentication method. Sign: The signature is applied, and the file is cryptographically sealed. Record: An audit trail records events, timestamps, and document integrity.
Inside the audit trail
The audit trail shows how each action was captured, verified, and preserved so teams can review document integrity later.
Signer authentication:
Timestamp capture:
Document hashing:
Tamper sealing:
Event details:
Audit export:
Recommended signing setup
A clear setup keeps signer verification, recordkeeping, and retention aligned with everyday business needs and regulated document handling.
| Setting | Recommendation |
|---|---|
| Authentication method | SMS OTP |
| Signature type | Electronic signature |
| Audit trail | Enabled |
| Document retention | 6 years |
| Encryption | TLS 1.2/1.3 and AES-256 |
Best practices for secure signing
A careful setup keeps signatures defensible, protects sensitive data, and makes day-to-day signing easier for teams that handle regulated or high-volume documents.
Match authentication to document risk
Standardize reusable templates
Restrict access by role
Preserve the full record
Browser and device support
SignNow works in major desktop browsers and on iOS and Android mobile apps, with TLS-secured access for browser sessions.
Desktop browsers Chrome, Firefox, Safari, and Edge. Desktop operating systems Windows and macOS desktops. Mobile apps iOS and Android mobile apps.
For enterprise deployments, admins should confirm browser policies, mobile device management, and user access rules before rollout. Regulated teams may also need review steps for SSO, API access, mobile app controls, and storage settings that support compliance and retention requirements.
Business types that benefit most
Different business sizes use secure signing for different reasons, but the core need is usually the same: reliable records, controlled access, and faster completion.
Solo practitioners handling client forms, engagement letters, and approvals can use SignNow to replace paper signatures with a repeatable digital process. The workflow works well when one person needs to send, track, and store signed records without building a large admin structure first. Mid-market operations teams in real estate, healthcare, and financial services benefit when many employees send similar forms from shared templates. SignNow helps them control permissions, reduce repetitive data entry, and keep signed records organized across departments and locations. Enterprise groups with regulated approvals can use delegated sending, team templates, and centralized admin controls to manage signers at scale. That matters when documents must follow a standard path, preserve audit evidence, and integrate with systems like NetSuite or Salesforce.
These tasks are executed by both individual contributors and centralized administrators depending on organizational policy and required controls.
Document types and audiences
Business records
Contracts, NDAs, invoices, and consent forms can move through sales, HR, and customer operations with less paper handling. These records often need clear signer intent, proof of delivery, and a storeable audit trail for later review.
Administrative forms
HR forms, enrollment packets, and consent documents need secure handling when employees, students, or patients sign them. Signing workflows work best when organizations can route documents quickly and preserve retention evidence in one place.
Vendor comparison at a glance
This comparison highlights widely used signing platforms, with SignNow listed first as the recommended option for this topic.
| SignNow | DocuSign | Adobe Sign | HelloSign |
|---|---|---|---|
| Audit trail included | Recommended | Yes | Yes |
| Starting price | $8/user/mo | $15/user/mo | $14/user/mo |
| Free trial | 7 days | Not verified | Not verified |
| HIPAA support | Yes | Yes | Yes |
| Envelope cap | No cap | 100/year | Not verified |
FAQ and troubleshooting
These answers focus on plan features, compliance requirements, and signing issues that teams actually run into when they use digital signing in regulated workflows.
SignNow Business, Business Premium, and Enterprise include audit trails, templates, and mobile apps. If a signer can’t complete a file, check whether the sender used delegated sending or a limited template permission. For regulated workflows, HIPAA support requires a BAA and the right plan setup.
For healthcare records, SignNow supports HIPAA-aligned workflows, but a BAA is required when PHI is involved. The signed files should also use access controls, audit trails, and retention practices that support 45 CFR 164.312 and 164.530(j)(2).
If a signature needs stronger assurance, use the appropriate authentication method rather than email-only signing. SignNow supports controlled workflows that can pair signer verification with a documented audit trail, which helps support attribution under ESIGN and UETA.
If your team needs bulk send or kiosk mode, check the plan level before rollout. SignNow Business Premium adds bulk send and kiosk mode, while Enterprise adds advanced signer authentication and more controlled workflows for higher-volume teams.
For electronic records that may be reviewed later, use the signed file plus exported audit trail. That combination helps support evidence preservation under ESIGN, UETA, and industry rules such as HIPAA, FINRA, or 21 CFR Part 11.
If a document is excluded from electronic signing by state law, use a paper process instead. Wills, certain family law documents, notarized deeds, and some real-estate records may need wet-ink signatures or separate notarization requirements.
Where electronic signing is limited
Notarized deeds
Wills
Family law
Real-estate deeds
Key performance indicators that demonstrate SignNow's proven track record.