1.

苹果系统是支持DRM（Digital Rights Management，数字版权管理)的。它表现在，当你播放一个加密了的hls流时，你进行截屏（用手机截屏或用Xcode截屏），该视频控件会显示空白。

 

这里，我们返回的key是16字节纯0的数据，其实mp4文件并没有加密，只是让系统以为加密了，好在截屏时进行保护。

-(BOOL)resourceLoader:(AVAssetResourceLoader *)resourceLoader shouldWaitForLoadingOfRequestedResource:(AVAssetResourceLoadingRequest *)loadingRequest{
    NSString *url = loadingRequest.request.URL.absoluteString;
    if ([url isEqualToString:@"jedi://text.m3u8"]) {
        NSData *data = [[self gen_m3u8] dataUsingEncoding:NSUTF8StringEncoding];
        [loadingRequest.dataRequest respondWithData:data];
        [loadingRequest finishLoading];
    }
    else if([url isEqualToString:@"jedi://text.key"]) {
        NSMutableData *data = [NSMutableData dataWithLength:16];
        [data resetBytesInRange:NSMakeRange(0, [data length])];
        [loadingRequest.dataRequest respondWithData:[data copy]];
        [loadingRequest finishLoading];
    }
    
    return YES;
}

 

https://github.com/ohswift/VTAntiScreenCapture

https://www.jianshu.com/p/86d0cfed5f4e

 

 

2.iOS逆向

 

https://www.jianshu.com/p/16d2205bb240

https://www.jianshu.com/p/64bbc0511e4c?utm_campaign=maleskine&utm_content=note&utm_medium=seo_notes&utm_source=recommendation