Are you new to CAcert?

CAcert.org 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 Background check etablished

English – Français – Deutsch English Our efforts, most recently under Ted’s leadership, to re-establish a functioning background assessment system (formerly called ABC) for incoming volunteers were successful. This was essential for us to be able to staff our teams again. In May-June 2020, after recognising the inability of the last remaining arbitrators to re-establish […]

OCSP is working well with Mozilla Firefox again

There was a issue with ocsp.cacert.org on Mozilla Firefox browsers. We published a work around last year. In between a volunteer detected, that a script on ocsp.cacert.org was not running as expected. Therefore the CRL expired for OCSP-Daemon, hence giving the OLD_RESPONSE-error. We restarted the script allready in 2020 and changed our internal monitoring. The […]

Your Easter egg for CAcert?

We feel the spring. The flowers are blooming in the garden. The children are looking forward to Easter, some of us can hardly wait to finally head the chocolate bunny… Excess spring energy can be well redirected to CAcert: software review (there are still two or three small tasks to do, so that new chicks […]

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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.

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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
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  • Account Name: CAcert Inc
  • SWIFT: WPACAU2S
  • BSB: 032073
  • Account No.: 180264


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