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 .

Most CAcert functions are currently unavailable. Please come back later.

Viimeisimmät uutiset

Partially restricted operation / most services available

As a result of a chain of technical failures of old equipment already scheduled for replacement, there are currently certain limitations in the services provided to members of the CAcert community. We regret this terribly. Mid september, we discovered that a partition contained a corrupt file system. Asubsequent hardware test showed that one of the […]

Certificate renewing is pending (update & help)

Some of our community members (users) get a problem while they try to renew an existing certificate. The issue is: Certificate renewal is pending for days/weeks. First of all, CAcert is not a service provider or a company, but a community. We are all in the same boat. We can only achieve our goals together, […]

Critical servers upgrade project

As a faulty connection cable between www.cacert.org and the signer made it necessary to travel to the datacenter this weekend instead of the planned schedule later this year we were able to finish this part earlier than expected: We finalized on the last steps of moving CAcert to a more modem hardware and software on […]

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CAcert yhteisön jäsenille

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
  • SWIFT: WPACAU2S
  • BSB: 032073
  • Account No.: 180264


If you want to participate in CAcert.org, have a look here and here.
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