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 .


European Data Protection Day and Data Privacy Day

Today we celebrate the European Data Protection Day founded by the Council of Europe (CoE) and the Data Privacy Day in the United States and Canada. We want to raise awareness of data protection and the right to privacy. At CAcert we provide you digital certificates with which you can protect your private data for […] available again

Since yesterday evening the main webserver of CAcert is currently not available. We’re working hard in the background to get it up and running again. Update: According to the logfiles the server crashed at (or shortly after) Jan 21 18:07:39 The machine is up again after a hardware restart since: Jan 23 10:55:17 (Software-Restarts of the sun-server […]

CAcert Event in Staffordshire – 11th Feb 2020

Good news: There will be a CAcert event in the United Kingdom! The CAcert event will be on the 11th February 2020. The main talk will begin at 7pm, the doors will be open for earlier arrivals from 6pm onwards. The CAcert Event will be at the StaffsLUG Workshop, Innovation Centre, The University of Keele, University Drive, […]

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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.

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
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