CAcert は初めてですか?

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 .

最新ニュース

Long data protection shadows around the globe

The new Data Protection Regulation has entered into force in the European Union today. You can find our data protection declaration on data handling here. In der Europäischen Union ist heute die neue Datenschutzverordnung in Kraft getreten. Unsere Datenschutzerklärung zum Umgang mit den Daten finden Sie hier. Le nouveau règlement sur la protection des données […]

Efail: How you can still trust in GPG/PGP encryption

The EFAIL attacks exploit vulnerabilities in the OpenPGP and S/MIME standards to reveal the plaintext of encrypted emails. In a nutshell, EFAIL abuses active content of HTML emails, for example externally loaded images or styles, to exfiltrate plaintext through requested URLs. However, according to the German Federal Office for Information Security, the e-mail encryption standards […]

Please, help us to pay our expenses

CAcert offers free certificates. Nevertheless, the CA does not function completely without money. For example, the electricity bills of the data centre in the Netherlands must be paid. The annual expenses of CAcert are about 3000 dollars/Euro. In view of the more than 300,000 users, that’s not much. How does CAcert pay these bills? First […]

[ ニュース項目をもっと見る ]

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.
CAcert operations are sponsored by
CAcert.org について | 寄付 | Association Membership | プライバシーポリシー | 運営理念 | 連絡先 | ©2002-2018 by CAcert