Ok, I got it :)
Is there a better way to do a very fast encryption of a file for a key
that changes daily ?
The movie is loading and playing at the same time [progressive/rtsp],
so the encrypt/decrypt needs to be pretty fast
I tried mcrypt but it seemed way to slow....
Maybe there is a better encryption method ? Or, are there better
characters to search/replace ?
Does not have to be ultra secure...just needs to be encryption that
could last a day or so...as it will change daily.
When I run this, the movie plays, but shows a blank screen and plays no
audio...which is exactly what I want :)
I want to write a data handler on the user side that connects to a db
and gets the $find and $replace keys to unlock the movie
many thanks in advance...and yes, I am experimenting
<?php
$fileSize = filesize($filepath);
header("ETag: ".md5(time()));
header("Accept-Ranges: bytes");
header ("Content-Length: ".$fileSize);
header('Content-Type: video/quicktime');
$find = array("{","ፀ","k","?");
$replace = array("q","m","g","&");
if( $fd = fopen($filepath, 'rb')){
while(!feof($fd)) {
echo str_replace($find,$replace, fread($fd, 8192));
}
fclose ($fd);
exit;
}
?>
On Sep 23, 2005, at 4:07 PM, Graham Anderson wrote:
I am trying to stream a movie file with 'fread'
this my first step in trying to dynamically encrypt the file as it is
being streamed from the server
do I need to fread the data in chunks?
If so, how?
$filename ="$path2file";
$file = fopen($filename,'r');
$fileSize = filesize($filename);
$ContentType = " video/quicktime";
header ("Content-type: $ContentType");
header ("Content-length: $fileSize");
while( $filedata_temp = fread($file, $fileSize) )
echo $filedata_temp;
<b>Fatal error</b>: Allowed memory size of 16777216 bytes exhausted
(tried to allocate 24113191 bytes) in <b>xxxxxxxx/fopenTest.php</b> on
line <b>27</b><br />
BTW, I can get readfile to work just fine :)
AFAIK, readfile does not parameters to alter the file contents
many thanks :)
g
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