News 01-24-2024

DigiCert and CI Plus Eclipse One Billion Devices with Trusted Certificates for European Television

CI Plus DigiCert Press Release

Major milestone underscores importance of PKI as a proven foundation for trust, with DigiCert securing consumers, content owners, and TV manufacturers.

Lehi, Utah--January 24, 2024 — DigiCert and CI Plus LLP today announced that DigiCert CI Plus certificates have been issued to more than one billion devices, providing proven PKI-based common trust standards across the diverse television industry ecosystem. The CI Plus (Common Interface Plus, or CI+) technical specification is an extension of the original Digital Video Broadcasting (DVB) common standard that provides additional protection for pay-TV content. It gives pay-TV broadcasters in Europe a method to deliver protected services directly to TV sets without the need for an additional set top box.

“Most people would not have predicted how dramatically the TV landscape would evolve when the CI Plus specification was developed in 2008,” said Richard Hall, Vice President of Customer Success at DigiCert. “Over time, the specification has proven itself as one of the original models for common trust standards across a diverse industry ecosystem. DigiCert CI Plus certificates have now secured more than a billion devices. And with the DigiCert PKI Platform for CI Plus, manufacturers can take advantage of the easiest, most secure, cost-effective way to implement CI Plus standards at scale.”

“CI Plus was founded at a time when TVs required an additional set top box to access pay TV services, and the market support over the years has greatly exceeded our expectations,” said Vlaho Kostov, Chairman of CI Plus LLP. “Due to the wide backing of the CE industry and pay-TV operators, the cross-industry collaboration we have established has been hugely beneficial to everyone, especially consumers. We look forward to continuing this momentum to hit the next milestone of 2 billion.”

CI Plus LLP is a partnership of TV manufacturers and Common Interface module manufacturers established to enable the delivery of encrypted broadcast television services and content in Europe. CI Plus defines a common set of specifications for content decryption that use PKI as the foundation. The LLP partners define and conduct continuous testing and audits to ensure trust in the more than 620 registered device types—and now one billion plus devices.

DigiCert operates the authoritative root of trust and delivers the provisioned certificates to the 50 licensees of CI Plus, ensuring:

  • Device identity and certification
  • Content delivery and protection
  • Revocation of compromised hosts as needed

The CI Plus specification was developed by consumer electronic firms Panasonic, Philips (now TP Vision), Samsung and Sony, as well as pay-TV technology company SmarDTV, Neotion and SMiT in partnership with the TC TrustCenter, whose assets related to CI Plus are now owned and operated by DigiCert. The specification represents one of the earliest examples of industry collaboration among device manufacturers and the authoring of PKI-based standards to ensure a trusted foundation for the future.


About DigiCert, Inc.

DigiCert is a leading global provider of digital trust, enabling individuals and businesses to engage online with the confidence that their footprint in the digital world is secure. DigiCert® ONE, the platform for digital trust, provides organizations with centralized visibility and control over a broad range of public and private trust needs, securing websites, enterprise access and communication, software, identity, content and devices. DigiCert pairs its award-winning software with its industry leadership in standards, support and operations, and is the digital trust provider of choice for leading companies around the world. For more information, visit  or follow @digicert.


About CI Plus LLP

CI Plus LLP is a UK Registered Limited Liability Partnership. The members of CI Plus LLP are Panasonic, Samsung, SMiT, Sony and TP Vision. CI Plus LLP is the CI Plus Trust Authority and, with the assistance of its appointed agents, operates the technology licensing, testing and certificate procurement regimes required to allow market deployment of CI Plus. For additional information, please visit