security Kaltura

[developpervi]

Hello,

I am new to kaltura and I would like to install the security module of the content.

but I do not really understand how it's going?

can you share a detailed documentation please?

like the location of files to modify, a command list to install the nginx module ...

thank you so much

[erankor]

This question is a bit vague, there are several things that can be considered as 'security features'.
Did you read https://github.com/kaltura/nginx-vod-module#security ?

[developpervi]

Hello

what i want to do is encrypt my kaltura videos and prevent their download with internet download manager and even if we can recover them one way or another i would like the videos to be encrypted and unusable.

I have browsed the NGINX VOD module but I have not quite understood its implementation and installation

would you have a step-by-step procedure for beginners?

Thank you very much for your answer

[erankor]

Assuming you got the basic functionality working, enabling encryption for HLS is easy - you just need to add to nginx.conf:

vod_hls_encryption_method aes-128;
vod_secret_key "somesecret$vod_filepath";

I'm not sure whether that will prevent a video capturing tool from working, a simple one - maybe, a more sophisticated one will probably pull the key (as the player does...) and use it to decrypt the stream.

[developpervi]

just what I need is to make streaming in a secure way, it's me who upload my videos I do not intend to live for the moment

just that I find the installation procedures very vague it is very difficult to understand the different steps!

I really need to have a kaltura server very quickly but I do not come with security

[citijk]

working configuration example using "secure_link" module"

        map $uri $hls_uri {
                ~^(?<base_uri>.*)/(.*).m3u8$ $base_uri;
                ~^(?<base_uri>.*)/(.*).ts$   $base_uri;
                ~^(?<base_uri>.*)/(.*).webm$   $base_uri;
                default                 $uri;
            }

server{
    server_name hls.example.com;

	vod_segments_base_url https://$http_host;
	vod_base_url https://$http_host;
	root /home/filme/download/;
	location / {
		deny all;
	}

	location /src {
                secure_link $arg_md5,$arg_expires;
                secure_link_md5 "$secure_link_expires$hls_uri enigma";
                if ($secure_link = "0") { return 410; }
                if ($secure_link = "") { return 403; }
		alias /home/filme/download/;
	}

	location ~^/s2/(?<md5>[^/]+)/(?<exp>[^/]+)/(?<b>.*)/(?<f>.*).ts$ {
		secure_link $md5,$exp;
		secure_link_md5 "$secure_link_expires/$b enigma";
		if ($secure_link = "0") { return 410; }
		if ($secure_link = "") { return 403; }
		rewrite ^ /$b/$f.ts;
		alias /home/filme/download/;
		vod hls;
		include cors.vod;
	}
	location /hls/ {
		vod_segments_base_url https://$http_host/s2/$arg_md5/$arg_expires;
		secure_link $arg_md5,$arg_expires;
		secure_link_md5 "$secure_link_expires$hls_uri enigma";
		if ($secure_link = "0") { return 410; }
		if ($secure_link = "") { return 403; }
		alias /home/filme/download/;
		vod hls;
		include cors.vod;
	}
}

to get links like:

//hls.example.com/hls/directory/src.mp4/index.m3u8?md5=PZRyYExZAGJvpHP9SNXaPg&expires=1548089721
or //hls.example.com/src/directory/src.webm?md5=REqPrC7Q0vdxMZ53etE0pA&expires=1548089721

example in php

<?php
    function buildSecureLink($path, $secret, $ttl, $string="")
    {
        $pa = dirname($path);
        $expires = time() + $ttl;
        $md5 = md5( "{$expires}{$pa}{$string} {$secret}", true);
        $md5 = base64_encode($md5);
        $md5 = strtr($md5, '+/', '-_');
        $md5 = str_replace('=', '', $md5);
        return $path . '?md5=' . $md5 . '&expires=' . $expires;
    }
    function to_player_sec($val){
        return "//hls.example.com" . buildSecureLink($val, "enigma", 60*60*4);
    }
    $player = explode(" or ", str_replace("//hls.example.com", "", "//hls.example.com/hls/directory/src.mp4/index.m3u8 or //hls.example.com/src/directory/src.webm"));
    $player = implode(" or ", array_map("to_player_sec", $player));
?>

upd
files structure note:

/home/filme/download =>
    directory =>
        src.mp4
        src.webm
    other_dir_videoname =>
        src.mp4
        src.webm
    ...

[ufukomer]

@citijk I think this config is not working for multi url structure or maybe I'm missing something.