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 .

Legfrisebb hírek

Updates for blog and bugs

We just updated some of our servers to the latest updates: to the latest WordPress-release. to the latest mantis-release. Furthermore the client certificate login on was activated by today for Class-3 certificates. To login you have to enter your username or email-adress of your mantis-account. Trying to login to using an unknown email-adress will […]

Certificate Login for CAcert wiki

Within the last days I ran some tests using the certificate login for This evening I activated this function on our wiki server. Trying to login to using an unknown email-adress will NOT create a new account: You have to create an account first using the email-adress, which is listed in your client certificate. […]

Bugs updated

Within the last days we ran some tests and updated the CAcert Bugtracker . It’s now running with the latest version of Mantis, which now has a responsive design. You may now read, add and comment bugreports even from your Smartphone or Tablet. Two additional changes were done while updating to Mantis 2.4.0: (1) The certficate chain of […]

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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 és here.
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