The CILogon Certification Authorities provide certificates to users of United States cyberinfrastructure. Each CILogon CA operates at a defined level of assurance.

Links to CA certificates, CRLs, etc., are provided on the Downloads page.

Latest News

  • CILogon OSG CA in IGTF Distribution
    The CILogon OSG CA, which supports the Open Science Grid Certificate Service, is now accredited by the Interoperable Global Trust Federation and included in the IGTF CA distribution starting in the October 2015 version 1.69 release. The CILogon OSG CA is operated by XSEDE in collaboration with OSG.
    Posted Oct 26, 2015, 3:14 AM by Jim Basney
  • CP/CPS Update: CILogon Replica at NICS
    We have updated Section 5.1 of the CILogon Certificate Policy and Certification Practice Statement (CP/CPS) documents at to add descriptions of the physical controls for the equipment at NICS that is hosting a secure CILogon replica. This replica will provide continuity of service in case of an outage of our primary equipment at NCSA. Thanks to NICS and XSEDE for this improvement in CILogon's reliability!
    Posted Dec 3, 2014, 2:39 PM by Jim Basney
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