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

Updated: Information about Heartbleed-bug in OpenSSL 1.0.1 up to 1.0.1f

German version below There is news about a bug in OpenSSL that may allow an attacker to leak arbitrary information from any process using OpenSSL. Good news: Certificates issued by CAcert are not broken and our central systems did not leak your keys. Bad news: Even then you may be affected. Although your keys were […]

CAcert appoints internal auditor

[German version below] CAcert gets down to business to the next step for reopening the audit process and has appointed Benedikt Heintel as internal auditor in last december. The goal is the acceptance of CAcert as trustworthy certificate authority. Benedikt Heintel cares for the compliance of internal process flows with the rules and thereby for […]

CAcert with high user gain and new server / CAcert mit hohem Benutzeranstieg und neuem Server

[German version below] The NSA scandal shows: Secure communication on the internet is highly important for many! CAcert has nowadays a high number of new user registrations: In 2013 we had about 27.500 new registrations and all year long a much higher number of new members than in the years before. Now in the first […]

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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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