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

CAcert OpenID Connect for Nextcloud now available

Nextcloud is free software for storing data (e.g. files, calendars, contacts, etc.) on a server. The user can access the data both via the web and with client applications. This enables a centralised and consistent database from many end devices and optional sharing with other users. In addition to data storage, Nextcloud offers functionalities for […]

2537 kWh for 3993 free certificates

At the end of June, the financial year 2024/2025 ended and in a couple of weeks will be the annual General Meeting at October 25th. For transparency, we publish here an overview, how we spent money. In fact, our servers need some electricity to create free certificates. This monthly bills are paid as well as […]

A Digital Identity Card for Switzerland

On 28 September, the Swiss will vote on the introduction of a digital identity card (e-ID). The proposal gives users the greatest possible control: personal data remains on the user’s phone. Neither the state nor private companies can track the use of the e-ID. And users decide for themselves with whom they share which information. […]

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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
  • 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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