Web ブラウザで DRM
92
Web DRM
-
Upload
yusuke-goto -
Category
Engineering
-
view
1.895 -
download
1
Transcript of Web ブラウザで DRM
Web DRM
W at c h i n g v i d eo s a n yt i m e , a n y p l a c e
📄
📄
📄
🔑
📄📄
🔒
🔑
📄🔒 📄🔒📄🔒
📄📄
🔒
🔑
📄🔒 📄🔒📄🔒
📄📄
🔒
🔑
📄🔒 📄🔒📄🔒
📄📄
🔒
🔑
📄🔒
🔑
📄🔒📄🔒
📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒
📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒
📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒 📄🔒📄🔒 📄🔒
function onEncrypted(e) {
// webm console.log(e.initDataType);
// [30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 30, 31, 32, 33, 34, 35] console.log( new Uint8Array(e.initData).map(d => d.toString(16)) );
}
video.addEventListener('encrypted', onEncrypted, false);
function onEncrypted(e) {
// webm console.log(e.initDataType);
// [30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 30, 31, 32, 33, 34, 35] console.log( new Uint8Array(e.initData).map(d => d.toString(16)) );
}
video.addEventListener('encrypted', onEncrypted, false);
https://arashafiei.wordpress.com/2012/11/13/quick-dash/
[237,239,139,169,121,214,74,206,163,200,39,220,213,29,33,237] .reduce( (ac, e) => ac + ("0" + e.toString(16)).slice(-2), "" );// "edef8ba979d64acea3c827dcd51d21ed"// = Widevine SYSTEM ID
[154,4,240,121,152,64,66,134,171,146,230,91,224,136,95,149] .reduce( (ac, e) => ac + ("0" + e.toString(16)).slice(-2), "" );// "9a04f07998404286ab92e65be0885f95"// = PlayReady SYSTEM ID
const config = [{ initDataTypes: ['keyids', 'cenc'], videoCapabilities: [{ contentType: 'video/mp4; codecs="avc1.4d401f"' }]}];
navigator .requestMediaKeySystemAccess('com.widevine.alpha', config) .then( keySystemAccess => { return keySystemAccess.createMediaKeys(); } ) .then( createdMediaKeys => { video.setMediaKeys(createdMediaKeys); } ) .catch( err => console.error('Failed to set up MediaKeys', err) );
function onEncrypted(e) { const session = video.mediaKeys.createSession(); session.addEventListener('message', onMessage, false); session.generateRequest(e.initDataType, e.initData) .catch( err => { console.error('Failed to request license request', err); } );}
video.addEventListener('encrypted', onEncrypted, false);
function onMessage(e) { const challenge = e.message; const session = e.target;
getKey(challenge) .then( license => { session .update(license) .catch( err => { console.error('Failed to update the session: ', err); }); });}
function getKey(challenge) { return new Promise( resolve => { const xhr = new XMLHttpRequest(); xhr.open('POST', 'http://widevine-license-challenge-url', true); xhr.responseType = 'arraybuffer'; xhr.onload = function () { resolve( this.response ); }; xhr.send(challenge); });}
2016/11/11 - http://abematv.connpass.com/event/42695/
2016/12/08 - http://abematv.connpass.com/event/43779/
