By joining CAcert and becoming a member, you agree to the CAcert Community Agreement. Please take a moment now to read that and agree to it; this will be required to complete the process of joining.

警告！本網站利用 Cookies 以保證你的個人隱私和帳戶安全。本網站將把 Cookies 臨時會話儲存並將作為驗證憑據，以防止有人會把內容連結複製給別人，從而洩露自己的帳戶和個人資料，甚至自己的身份遭到盜用。

Note: Please enter your date of birth and names as they are written in your official documents.

Because CAcert is a certificate authority (CA) people rely on us knowing about the identity of the users of our certificates. So even as we value privacy very much, we need to collect at least some basic information about our members. This is especially the case for everybody who wants to take part in our web of trust.Your private information will be used for internal procedures only and will not be shared with third parties.

A proper password wouldn't match your name or email at all, it contains at least 1 lower case letter, 1 upper case letter, a number, white space and a misc symbol. You get additional security for being over 15 characters and a second additional point for having it over 30. The system starts reducing security if you include any section of your name, or password or email address or if it matches a word from the english dictionary...

Note: White spaces at the beginning and end of a password will be removed.