Are you new to CAcert? is a community-driven Certificate Authority that issues certificates to the public at large for free.

CAcert's goal is to promote awareness and education on computer security through the use of encryption, specifically by providing cryptographic certificates. These certificates can be used to digitally sign and encrypt email, authenticate and authorize users connecting to websites and secure data transmission over the internet. Any application that supports the Secure Socket Layer Protocol (SSL or TLS) can make use of certificates signed by CAcert, as can any application that uses X.509 certificates, e.g. for encryption or code signing and document signatures.

If you want to have free certificates issued to you, join the CAcert Community .

If you want to use certificates issued by CAcert, read the CAcert Root Distribution License .This license applies to using the CAcert root keys .

Latest News

New committee constituted

CAcert Inc.’s Annual General Meeting was held shortly before Christmas. Most of the members of the committee have made themselves available for another year. Two members, who also perform other tasks within the CAcert-community, will focus on this in the future. On January 12th (January 13th, local time in New South Wales) the committee was […]

Messageries et systèmes de confiance, qu’allons-nous laisser à nos enfants?

Un sujet assez proche, et que intéressera sûrement du monde de la communauté parisienne: L’Association des Réservistes du Chiffre et de la Sécurité de l’Information (ARCSI) organise un événement le 7 novembre, à Paris (mardi prochain, toute la journée). «Messageries et systèmes de confiance, qu’allons-nous laisser à nos enfants?» Le programme est particulièrement alléchant, et […]

CAcert @ OpenRheinRuhr, Oberhausen, NRW, DE

Die OpenRheinRuhr in Oberhausen öffnet am Wochenende 4./5. November 2017 wieder ihre Tore für freie Software. Die Veranstaltung im Rheinischen Industriemuseum ist perfekt erreichbar direkt am Hauptbahnhof in Oberhausen. CAcert ist natürlich dabei und informiert vor Ort über Risiken im Internet und Möglichkeiten, die Sicherheit deutlich zu erhöhen. Jeder Interessierte kann sich am Stand von CAcert über kostenfreien Zertifikate, darunter […]

[ More News Items ]

For CAcert Community Members

Have you passed the CAcert Assurer Challenge yet?

Have you read the CAcert Community Agreement yet?

For general documentation and help, please visit the CAcert Wiki Documentation site .For specific policies, see the CAcert Approved Policies page.

Do you want to help CAcert?

We are facing an uphill battle to fund this service and could do with your help?
If you can, please donate.
AU$50 per year for this button
or a one off donation for this button whatever you can afford to help

If you are located in Australia, use bank transfer instead.

CAcert bank account details:

  • Account Name: CAcert Inc
  • BSB: 032073
  • Account No.: 180264

If you want to participate in, have a look here and here.
CAcert operations are sponsored by
About Us | Donations | Association Membership | Privacy Policy | Mission Statement | Contact Us | ©2002-2018 by CAcert