---
title: "What is OneSpan Authentication Server?"
slug: "oas-pg-what-is-onespan-authentication-server-3-28"
updated: 2025-10-14T14:12:04Z
published: 2025-10-14T14:55:29Z
canonical: "docs.onespan.com/oas-pg-what-is-onespan-authentication-server-3-28"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.onespan.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What is OneSpan Authentication Server?

OneSpan Authentication Server is a server product to support the deployment, use, and administration of OneSpan Digipass authenticator technology.

OneSpan Authentication Server supports the following primary functions:

- Authentication using one-time password (OTP)
- Signature validation
- Software authenticator provisioning
- Administration and reporting
- Auditing

OneSpan Authentication Server can be integrated with existing custom applications using a Software Development Kit (SDK). It is designed to be easily usable with web applications, but also provides its own Administration Web Interface.

### PCI DSS Compliance

OneSpan Authentication Server contains features that support the following requirements for Payment Card Industry Data Security Standard (PCI DSS) compliance:

- Cryptographic key rotation
- Performance monitoring
- Enhanced security for replicated data (SEAL over SSL)
- OWASP testing
- Unused user account check
- Report to show inactive authenticators
- Password management (imposing high strength passwords for administrators)
- Secure auditing