This is just part of the interface defined in content_decryption_module.h. addEventListener ( "message", function ( message ) ) īehind the scense Chrome will create a CDM instance from the CDM DLL and call its CreateSessionAndGenerateRequest and UpdateSession methods to generate and update the proprietary protobuf license requests and respones (the same blobs that the javascript code above sees). generateRequest ( "cenc", psshBox ) mediaKeySession. createSession ( "temporary" ) // Now parse the MP4 and get the PSSH box that contains a key ID. setServerCertificate ( someCertificateBlob ) var mediaKeySession = mediaKeys. ![]() requestMediaKeySystemAccess ( "", options ) var mediaKeys = await keySystemAccess. Concluding the exponent - the final trick.Breaking the whitebox - simplify, simplify, simplify.Where do all of these numbers come from?.Doing math with big numbers and the montgomery method.The license response and the device RSA keypair. ![]() Reversing the old Widevine Content Decryption Module
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