doxyf

Downloading Widevine content

Specifically from Rakuten TV (live.tv.rakuten.co.jp)

	// Generates the SAPISIDHASH token Google uses in the Authorization header of some API requests
	async function getSApiSidHash(SAPISID, origin) {
	function sha1(str) {
	return window.crypto.subtle.digest("SHA-1", new TextEncoder("utf-8").encode(str)).then(buf => {
	return Array.prototype.map.call(new Uint8Array(buf), x=>(('00'+x.toString(16)).slice(-2))).join('');
	});
	}

	const TIMESTAMP_MS = Date.now();
	const digest = await sha1(`${TIMESTAMP_MS} ${SAPISID} ${origin}`);