DigiCert X9 PKI is a dedicated public key infrastructure designed to provide interoperability and flexibility for non-web browsers. It was developed in collaboration with the finance standards body, ASC X9, and operates independently of the CA/B Forum and browser root programs.
The Chrome Root Store recently announced that it will no longer trust public TLS certificates containing the client authentication extended key usage (EKU), impacting organizations relying on these certificates for host-to-host communications like mutual TLS (mTLS), APIs and other non-browser use cases.
X9 PKI for TLS is a ready solution for organizations impacted by this change. X9 PKI delivers high assurance certificates with the convenience of a common root of trust.
Contact us to speak with an expert.
X9 PKI was born from the financial services industry’s need for a dedicated, interoperable trust framework. Developed in collaboration with ASC X9, a non-profit standards body, it was designed to meet the sector’s rigorous security and compliance requirements.
Read more about how X9 PKI can help financial services companies.
X9 PKI delivers tailored trust for needs beyond those of external web servers. It receives an annual WebTrust audit by an independent organization.
A common root of trust makes it easy for ecosystems like financial services and manufacturing to seamlessly communicate with high assurance organizational validation.
DigiCert X9 PKI operations are governed by an ASC X9 Policy Committee and undergoes an annual independent WebTrust audit – the standard for public Certification Authorities.
X9 PKI is built to support dozens of use cases based on years of research into the specific needs of the financial sector, all while meeting stringent policies and compliance.
Organizations with existing PKI systems can cross-certify with the X9 PKI root for seamless integration.
Choose X9 PKI when you need trusted authentication for host-to-host communications (mTLS) involving multiple organizations. If your use case is strictly internal, explore DigiCert’s Private CA solutions.
DigiCert Selected by ASC X9 to Provide Managed PKI Service Infrastructure for Financial Services Industry
How the X9 PKI Puts Financial Institutions in Control
DigiCert Private PKI
© 2025 DigiCert, Inc. All rights reserved.
Legal Repository Audits & Certifications Terms of Use Privacy Center Accessibility Cookie Settings