设置安全级别

🌐 Setting security levels

要调整 Node.js 应用中的安全级别，你可以在加密字符串中包含 @SECLEVEL=X，其中 X 是所需的安全级别。例如，要在使用默认 OpenSSL 密码列表的情况下将安全级别设置为 0，可以使用：

🌐 To adjust the security level in your Node.js application, you can include @SECLEVEL=X within a cipher string, where X is the desired security level. For example, to set the security level to 0 while using the default OpenSSL cipher list, you could use:

import { createServer, connect } from 'node:tls';
import { readFileSync } from 'node:fs';
const port = 8000;

createServer({
  key: readFileSync('server-key.pem'),
  cert: readFileSync('server-cert.pem'),
  ciphers: 'DEFAULT@SECLEVEL=0',
  minVersion: 'TLSv1',
}, function(socket) {
  console.log('Client connected with protocol:', socket.getProtocol());
  socket.end();
  this.close();
})
.listen(port, () => {
  connect(port, {
    ciphers: 'DEFAULT@SECLEVEL=0',
    minVersion: 'TLSv1',
    maxVersion: 'TLSv1',
    ca: [ readFileSync('server-cert.pem') ],
  });
});const { createServer, connect } = require('node:tls');
const { readFileSync } = require('node:fs');
const port = 8000;

createServer({
  key: readFileSync('server-key.pem'),
  cert: readFileSync('server-cert.pem'),
  ciphers: 'DEFAULT@SECLEVEL=0',
  minVersion: 'TLSv1',
}, function(socket) {
  console.log('Client connected with protocol:', socket.getProtocol());
  socket.end();
  this.close();
})
.listen(port, () => {
  connect(port, {
    ciphers: 'DEFAULT@SECLEVEL=0',
    minVersion: 'TLSv1',
    maxVersion: 'TLSv1',
    ca: [ readFileSync('server-cert.pem') ],
  });
});拷贝

这种方法将安全级别设置为 0，允许使用传统功能，同时仍然利用默认的 OpenSSL 加密算法。

🌐 This approach sets the security level to 0, allowing the use of legacy features while still leveraging the default OpenSSL ciphers.

要为此示例生成证书和密钥，则运行：

🌐 To generate the certificate and key for this example, run:

openssl req -x509 -newkey rsa:2048 -nodes -sha256 -subj '/CN=localhost' \
  -keyout server-key.pem -out server-cert.pem 拷贝