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 Software: The Heart of Gold

Today’s post is the last part the blog series about our “New Software”. 1. Rewriting the software driving our site 2. Modernising the Web Frontend 3. The Heart of Gold This part will conclude our small blog series on the “New Software” and will provide some more details especially regarding the signer and some aspects […]

Cryptography, digital signature or data integrity – any ideas?

The PR team is working on creating new public relation material. One of the projects is to have new rollups and posters for events. The idea is to have a set of themes / designs to visualize the topics in one picture / drawing each: – cryptography – digital signature – data integrity The size […]

CAcert at Chemnitzer Linux-Tage 2015

CAcert wird auch in diesem Jahr auf den Chemnitzer Linux-Tagen (CLT) am 22. und 23. März 2015 mit einem Stand vertreten sein. Dieser befindet sich rechts hinter der Information. Es wird ein Präsentation der “New Software” am Stand geben, bei der die aktuelle Entwicklung direkt gezeigt wird und jeder die Möglichkeit erhält, diese einmal auszuprobieren […]

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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

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