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原理
使用 hlsjs 的 custom loader 在请求到 m3u8 和 ts 文件时，分别进行相对应的解密操作。
以下是完整代码
<html>
<head>
<title>Hls.js demo - basic usage</title>
</head>
<body>
<script src="
https://cdnjs.cloudflare.com/ajax/libs/hls.js/1.5.15/hls.min.js"></script>
<script src="./crypto-js.min.js"></script>
<center>
<h1>Hls.js demo - basic usage</h1>
<video height="600" id="video" controls></video>
</center>
<script>
async function process(playlist) {
const key = '1111111111111111';
const keyBytes = CryptoJS.enc.Utf8.parse(key);
console.log(playlist);
const byteArray = new Uint8Array(playlist);
const wordArray = CryptoJS.lib.WordArray.create(byteArray);
// Decrypt the data
const decrypted = CryptoJS.AES.decrypt(
{ ciphertext: wordArray },
keyBytes,
{ mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 }
);
console.log(decrypted)
// Convert decrypted data to text
const decryptedText = decrypted.toString(CryptoJS.enc.Utf8);
console.log(decryptedText);
return decryptedText;
}
// 转换 decrypted 为 ArrayBuffer
function wordArrayToArrayBuffer(wordArray) {
// 计算需要的长度
const length = wordArray.sigBytes;
const words = wordArray.words;
const bytes = new Uint8Array(length);
// 将 wordArray 的每个 word 转换为 byte
for (let i = 0; i < length; i++) {
bytes[i] = (words[i >>> 2] >>> (24 - (i % 4) * 8)) & 0xFF;
}
return bytes.buffer;
}
async function processData(data) {
console.log(data);
const key = '1111111111111111';
const keyBytes = CryptoJS.enc.Utf8.parse(key);
console.log(data);
const byteArray = new Uint8Array(data);
const wordArray = CryptoJS.lib.WordArray.create(byteArray);
// Decrypt the data
const decrypted = CryptoJS.AES.decrypt(
{ ciphertext: wordArray },
keyBytes,
{ mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7 }
);
console.log(decrypted)
const arrayBuffer = wordArrayToArrayBuffer(decrypted);
return arrayBuffer;
}
class CustomLoader extends Hls.DefaultConfig.loader {
constructor(config) {
super(config);
var load = this.load.bind(this);
//var xhrSetup = this.xhrSetup.bind(this);
this.load = function (context, config, callbacks) {
context.responseType = 'arraybuffer';
if (context.type == 'manifest') {
var onSuccess = callbacks.onSuccess;
callbacks.onSuccess = function (response, stats, context, networkDetails) {
console.log(networkDetails)
process(response.data)
.then(data => {
response.data = data;
onSuccess(response, stats, context);
})
.catch(err => {
console.error(err);
})
};
} else {
const onSuccess = callbacks.onSuccess;
callbacks.onSuccess = function (response, stats, context) {
processData(response.data)
.then(data => {
response.data = data;
onSuccess(response, stats, context);
})
.catch(err => {
console.error(err);
})
};
}
load(context, config, callbacks);
};
}
}
// Create the Hls instance with the custom fetch loader
const myHls = new Hls({
//debug: true,
loader: CustomLoader,
xhrSetup: function (xhr, url) {
xhr.open('GET', url, true);
xhr.setRequestHeader('id', 1)
xhr.setRequestHeader('token', 456)
xhr.responseType = '111'; // do send cookies
console.log("XXXXXXX")
}
});
const video = document.getElementById('video');
myHls.loadSource('./index.e.m3u8');
myHls.attachMedia(video);
myHls.on(Hls.Events.MANIFEST_PARSED, function () {
video.play();
});
myHls.on(Hls.Events.ERROR, function (event, data) {
if (data.fatal) {
console.error('HLS.js Error:', data);
}
});
</script>
</body>
</html>