Who We Are
One Sign Pte. Ltd. (UEN: 201917432G) is a Singapore-incorporated technology company specializing in digital security solutions. Founded in 2019, we provide enterprise-grade automated signing services, SSL certificates, and security infrastructure to businesses across the Asia-Pacific region.
Our flagship product, OneSigner, is an automated digital signing platform that enables enterprises to sign PDF documents and Windows executables at scale using USB hardware tokens — with zero manual intervention.
Our Mission
To make digital signing simple, secure, and fully automated — so businesses can focus on what matters most while we handle the complexity of cryptographic operations, certificate management, and compliance.
Security First
Hardware token-based signing with FIPS-certified devices. No private keys ever leave the token.
Full Automation
Zero manual intervention. Automated PIN, batch processing, REST API integration.
Asia-Pacific Focus
Localized support, regional infrastructure, and understanding of APAC compliance requirements.
What We Offer
- OneSigner Platform — Automated PDF and code-signing service (on-premise or cloud)
- SSL/TLS Certificates — Domain Validation, Organization Validation, and Extended Validation certificates
- Code Signing Certificates — OV and EV Authenticode certificates for Windows software
- Document Signing Certificates — OV certificates for PDF digital signatures
- Cloud Signing Service — Managed signing infrastructure with 99.9% uptime SLA
Company Details
Legal Name: One Sign Pte. Ltd.
UEN: 201917432G
Type: Exempt Private Company Limited by Shares
Incorporated: 30 May 2019
Jurisdiction: Republic of Singapore
Registered Address: 10 Anson Road #22-02, International Plaza, Singapore 079903
Principal Activity: Web hosting, security services, and software solutions
Website: onesign.sg
Support: support@onesign.sg
Certifications & Partnerships
- Authorized reseller of GlobalSign, Sectigo, and SSL.com certificates
- YubiKey FIPS-certified hardware token integration
- Cloudflare technology partner
- Member of the Accounting and Corporate Regulatory Authority (ACRA) of Singapore