Nodejs使用TLS

1. 使用openssl生成服务器和客户端证书

生成服务器证书，服务器使用自签名证书（也就是自己扮演CA）

openssl genrsa -out server-key.pem 2048
openssl req -new -sha256 -key server-key.pem -out server-csr.pem    //在CN处填写服务器主机名www.qikangwei.com
openssl x509 -req -in server-csr.pem -signkey server-key.pem -out server-cert.pem

　　将服务器私钥server-key.pem和CA根证书server-cert.pem复制到客户端，然后生成客户端证书

openssl genrsa -out client-key.pem 2048
openssl req -new -sha256 -key client-key.pem -out client-csr.pem    //在CN出填写客户端主机名
openssl x509 -req -CA server-cert.pem -CAkey server-key.pem -CAcreateserial -in client-csr.pem -out client-cert.pem

2. 创建服务器和客户端脚本

服务器：

var tls = require('tls');
var fs = require('fs');
var options = {
        key: fs.readFileSync('server-key.pem'),
        cert: fs.readFileSync('server-cert.pem'),
        ca: [ fs.readFileSync('server-cert.pem') ],
        requestCert: true,
        rejectUnauthorized: true
};
var server = tls.createServer(options, function(test) {
        console.log('server connected', test.authorized ? 'authorized' : 'unauthorized');
        test.write("welcome!\n");
        test.setEncoding('utf8');
        test.on('data', function(data) {
                console.log(data);
        });
        test.on('close', function() {
                console.log('client has closed');
                server.close();
        });
});
server.listen(2345, function() {
        console.log('server bound');
});

　　客户端：

var tls = require('tls');
var fs = require('fs');
var options = {
        host: 'www.qikangwei.com',
        port: 2345,
        key: fs.readFileSync('client-key.pem'),
        cert: fs.readFileSync('client-cert.pem'),
        ca: [ fs.readFileSync('server-cert.pem') ],
        rejectUnauthorized: true
};
var client = tls.connect(options, function() {
        console.log('client connected', client.authorized ? 'authorized' : 'unauthorized');
        process.stdin.setEncoding('utf8');
        process.stdin.on('readable', function() {
                var chunk = process.stdin.read();
                if (chunk !== null) {
                        client.write(chunk);
                }
        });
 
});
client.setEncoding('utf8');
client.on('data', function(data) {
        console.log(data);
});
client.write("happy new year!");

3. 测试

服务器：

node tls-server.js

客户端：

node tls-client.js

脚本启动后，在客户端输入内容，服务器端会显示同样的内容