步骤一：选择证书颁发机构
Step 1: Select a Certificate Authority
步骤二：证书配置
Step 2: Certificate Configuration
等待中，请先完成第一步...
Waiting, please complete step 1 first...
温馨提示：如果上次申请过证书，可以拖拽已下载保存的记录LOG文件到本页面，将自动填充上次的配置信息。
Reminder: If you have applied for a certificate last time, you can drag and drop the downloaded and saved record LOG file to this page, and the last configuration information will be automatically filled in.
*
证书中要包含的域名：
Domain name to be included in the certificate:
一个证书可以包含多个域名（支持通配符），比如填写：a.com, *.a.com, b.com, *.b.com；第一个域名将作为证书的通用名称（Common Name）；带通配符的域名只支持DNS验证，其他域名支持上传文件验证；注意：填了www.a.com时，一般需要额外填上a.com。
A certificate can contain multiple domain names (wildcard are supported), for example, fill in: a.com, *.a.com, b.com, *.b.com; the first domain name will be used as the Common Name of the certificate; Domain names with wildcard only support DNS verification, and other domain names support upload file verification ; Note: When www.a.com is filled in, it is generally necessary to fill in a.com additionally.
*
ACME账户的联系邮箱：
Contact email of ACME account:
此邮箱地址用于证书颁发机构给你发送邮件，比如：证书过期前的续期通知提醒。
This email address is used by the certificate authority to send you emails, such as a reminder of renewal notice before the certificate expires.
EAB凭据：
EAB Credentials:
当前ACME服务要求提供外部账号绑定凭据（External Account Binding），比如ZeroSSL：你可以在ZeroSSL的管理控制台的 Developer 中获得此凭据，所以你需要先注册一个ZeroSSL的账号。
The current ACME service requires external account binding credentials, such as ZeroSSL: You can obtain this credentials in the Developer of the ZeroSSL management console, so you need to register a ZeroSSL account first.
确定
OK
步骤三：验证域名所有权
Step 3: Verify Domain Ownership
等待中，请先完成第二步...
Waiting, please complete step 2 first...
请给每个域名选择一个你合适的验证方式（推荐采用DNS验证，比较简单和通用），然后根据显示的提示完成对应的配置操作。
Please select a suitable verification method for each domain name (DNS Verify is recommended, which is relatively simple and common), and then complete the corresponding configuration operations according to the displayed prompts.
请每个域名选择好对应的验证方式，根据显示的提示进行对应的配置操作；必须所有域名配置完成后，再来点击下面的“开始验证”按钮进行验证，如果验证失败，需要返回第二步重新开始操作。
Please select the corresponding verify method for each domain name, and perform the corresponding configuration operation according to the displayed prompts; after all domain names are configured, click the "Start Verify" button below to verify, if the verify fails, you need to go back to the step 2 Start the operation.
开始验证
Start Verify
取消
Cancel
重试
Retry
步骤四：下载保存证书PEM文件
Step 4: Download and save the certificate PEM file
等待中，请先完成第三步...
Waiting, please complete step 3 first...
*
保存证书PEM文件：
Save certificate PEM file:
必须保存此文件，请点击下载按钮下载，或者将证书文本内容复制保存为your_domain.pem文件（PEM纯文本格式）；文件名后缀可改成 .crt 或 .cer，这样在Windows中能直接双击打开查看。本PEM格式文件已包含你的域名证书、和完整证书链，文本中第一个CERTIFICATE为你的域名证书，后面的为证书颁发机构的中间证书和根证书，如过有需要你可以自行拆分成多个.pem文件。
This file must be saved, please click the download button to download, or copy the text content of the certificate and save it as your_domain.pem file (PEM plain text format); the file name suffix can be changed to .crt or .cer , so that it can be directly double-clicked to open and view in Windows. This PEM format file already contains your domain name certificate and complete certificate chain. The first CERTIFICATE in the text is your domain name certificate, followed by the intermediate certificate and root certificate of the certificate authority, if necessary, you can split it into multiple .pem files.
*
保存证书私钥KEY文件：
Save the certificate private key KEY file:
请点击下载按钮下载，或者将私钥文本内容复制保存为your_domain.key文件（PEM纯文本格式，.key后缀可自行修改成.pem）。如果第二步操作中你手动填写了证书私钥，此处的证书私钥和你填写的是完全一样的，可以不需要重复保存；如果你是新创建的证书私钥，则你必须下载保存此证书私钥文件。
Please click the download button to download, or copy and save the text content of the private key as your_domain.key file (PEM plain text format, the .key suffix can be modified to .pem by yourself). If you manually filled in the certificate private key in the step 2, the certificate private key here is exactly the same as what you filled in, and you don’t need to save it repeatedly; if you are a newly created certificate private key, you must download and save it This certificate private key file.
*
保存记录LOG文件：
Save the record LOG file:
建议下载保存此文件，本记录文件包含了所有数据，包括：证书PEM文本、证书私钥PEM文本、账户私钥PEM文本、所有配置参数。下次你需要续签新证书时，可以将本记录文件直接拖拽进本页面，会自动填写所有参数。
It is recommended to download and save this file. This record file contains all data, including: certificate PEM text, certificate private key PEM text, account private key PEM text, and all configuration parameters. Next time you need to renew a new certificate, you can drag and drop the record file directly into this page, and all parameters will be filled in automatically.
你需要其他格式的证书文件？
Do you need certificate files in other formats?
大部分服务器程序支持直接使用 your_domain.pem+your_domain.key 来配置开启HTTPS（比如Nginx），如果你需要 *.pfx、*.p12 格式的证书（比如用于IIS），请用下面命令将PEM证书转换成 pfx/p12 格式：
Most server programs support directly using your_domain.pem+your_domain.key to configure and enable HTTPS (such as Nginx). If you need a certificate in *.pfx or *.p12 format (such as for IIS), please use the following command to convert the PEM certificate Convert to pfx/p12 format:
openssl pkcs12 -export -out your_domain.pfx -inkey your_domain.key -in your_domain.pem
IIS证书链缺失？
IIS certificate chain missing?
对于Windows IIS服务器，你需要将证书链安装到“本地计算机”的“中间证书颁发机构”中；请将PEM证书中的所有证书拆分成单个PEM文件（后缀改成.crt或.cer），然后将系统中缺失的中间证书双击打开然后安装进去；详细参考：
For Windows IIS server, you need to install the certificate chain into "Intermediate Certification Authorities" in "Local Computer"; please split all certificates in PEM certificate into a single PEM file (change the suffix to .crt or .cer), then double-click to open the missing intermediate certificate in the system Then install it; detailed reference:
http://support.microsoft.com/kb/954755
本客户端部分原理简介
Introduction to the principle of this client
得益于现代浏览器的 crypto.subtle 对加密功能标准化，不依赖其他任何js库就能在网页上实现 RSA、ECC 的加密、解密、签名、验证、和密钥对生成。在本客户端内的 X509 对象中：用 X509.CreateCSR 来生成CSR，用 X509.KeyGenerate 来创建PEM格式密钥，用 X509.KeyParse 来解析PEM格式密钥，用 X509.KeyExport 来导出PEM格式密钥；这些功能都是根据相应的标准用js代码在二进制层面上实现的，二进制数据操作封装在了 ASN1 对象中：实现了 ASN.1 标准的二进制解析和封包，使用 ASN1.ParsePEM 方法可以解析任意的PEM格式密钥或证书。以上这些都是实现ACME网页客户端的核心基础。
Thanks to the standardization of encryption functions by crypto.subtle of modern browsers, RSA and ECC encryption, decryption, signature, verification, and key pair generation can be implemented on web pages without relying on any other js library. In the X509 object in this client: use X509.CreateCSR to generate CSR, use X509.KeyGenerate to create PEM format key, use X509.KeyParse to parse PEM format key, use X509.KeyExport to export PEM format key; These functions are implemented at the binary level with js code according to the corresponding standards, and binary data operations are encapsulated in ASN1 objects: ASN.1 standard binary parsing and encapsulation are implemented, Arbitrary PEM format keys or certificates can be parsed using the ASN1.ParsePEM method. These are the core foundations for implementing the ACME web client.
然后就是对接ACME实现证书的签发，和实现交互UI；对接ACME可以直接参考 RFC 8555 标准。有些证书颁发机构的ACME服务对浏览器支持不良，未提供齐全的 Access-Control-* 响应头，导致网页内无法直接调用服务接口；目前采用的解决办法非常简单粗暴，比如ZeroSSL：检测到此ACME服务存在跨域问题时，会调用 acmeReadDirGotoCORS() 方法告诉用户操作步骤（你可以手动调用此方法），通过在他们的页面内运行本客户端来消除跨域问题（既然打不过，那就加入他们）。
Then it is to connect with ACME to realize certificate issuance and realize interactive UI; for connecting with ACME, you can directly refer to the RFC 8555 standard. The ACME services of some certificate authorities do not support browsers well, and do not provide complete Access-Control-* response headers, so that the service interface cannot be called directly in the web page; the current solution is very simple and rude, such as ZeroSSL: detect this ACME When there is a cross-domain problem with the service, the acmeReadDirGotoCORS() method will be called to tell the user the operation steps (you can call this method manually), and the cross-domain problem will be eliminated by running this client in their page (if we can't beat them, we'd better join them).
QQ群：交流与支持
QQ group: communication and support
欢迎加QQ群：421882406，纯小写口令：xiangyuecn。如需功能定制，网站、App、小程序、前端和后端等开发需求，请加此QQ群，联系群主（即作者），谢谢~
Welcome to join the QQ group: 421882406 , code: xiangyuecn . If you need function customization, website, app, applet, front-end and back-end development needs, please join this QQ group and contact the group owner (ie the author), thank you~