Supply of PKI Hardware Appliance

Unite Procurement UK Limited, representing the Ministry of Defence, is looking for suppliers to provide Public Key Infrastructure (PKI) Hardware Appliances. This opportunity is part of the Unite Procurement Platform, which facilitates compliant procurement for UK Public Sector organizations, focusing on low-value, high-volume needs. **Requirements Overview:** - **PKI Platform:** - Full Certificate Authority (CA), Registration Authority (RA), and Validation Authority (VA) functions. - Support for X.509 certificate issuance in both classified and unclassified domains. - Compatibility with standard enrolment protocols (SCEP, EST, ACME, CMP). - Integration with Microsoft Active Directory Certificate Auto Enrollment. - API-based integration (REST and web services). - **Appliance Hardware:** - Secure, hardened rack mount appliance. - Redundant SSDs and power supplies. - ECC or equivalent error-tolerant memory. - Defence-grade hardening and assurance. - **High Availability & Scalability:** - Support for multi-node, geographically distributed resilience. - Real-time replication and clustering. - Scalable certificate capacity (minimum 2,500 certificates, with potential growth to millions). - **Management & Security:** - Web-based administrative interface suitable for restricted environments. - Full audit logs and compliance reporting. - Secure update mechanism and backup/disaster recovery functionality. - Alignment with Ministry of Defence security policies and Zero Trust initiatives. **Contract Scope:** - Supply of appliances. - PKI platform licensing. - HSM capability. - Implementation, integration, and configuration. - Ongoing support and maintenance. **How to Apply:** Interested suppliers should register their interest by contacting Unite Procurement UK Limited, providing details of their product range, modification capabilities, and maintenance services. More information on the onboarding process for the Unite Procurement Platform will be shared upon expression of interest and is also available at the provided link. Unite Procurement UK Limited aims to onboard multiple suppliers to ensure a diverse and competitive supply base, offering flexibility and choice for the Ministry of Defence and related organizations. Suppliers are encouraged to express their interest by the closing date for early consideration, but applications will be accepted at any time thereafter. Unite Procurement UK Limited reserves the right to review and onboard new suppliers continuously to adapt to evolving requirements and maintain a responsive supplier network. For inquiries, please email defence.support@unite.eu with the subject line 'TSS 584'. **Published Date:** February 23, 2026 **Deadline Date:** March 16, 2026 **Contract Value:** £340,000 **Sector:** Equipment **Buyer:** Unite Procurement UK Limited **Contract URL:** [View Contract](https://www.contractsfinder.service.gov.uk/notice/e330af98-b726-4b53-9872-deb637ceab5e)