So I'm trying to encrypt and echo a file with openssl. Getting my file contents works, but after I call the function to encrypt, it doesn't echo anything, as if it were a syntax error.
$file = file_get_contents($filename);
//echo $file; // works
$encfile = openssl_encrypt($file, $encmethod, $enckey, 0, $iv);
echo $encfile;
Yes, all my encryption keys and everything are valid. Echoing anything after the encryption doesn't work. If anyone knows what's wrong please let me know.
I allowed php more memory with
ini_set('memory_limit','512M');
And now it works like a charm.
ini_set('memory_limit','3G'); on my server lol, really. But it was only for one time, Ususall PHP only has 1G but I had to pull 130million rows out of the DB and move them to MongoDB ... lolI wouldn't add more memory.
I faced a similar issue recently.
How did I fix it, I encrypted chunks of the file at a time a few MB, then I separated the base64 encoded chunks with a : which doesn't appear in base64.
Then when you decode it you read it tell you get the the : decrypt it and move on to the next chunk.
That way you stay well below the memory limit ... :)
See this answer I posted a few days ago KLICK
-note- I use PHPSecLib for AES, we were already using it for sFTP, and I had to update from mycrypt for our Upcoming move to PHP7.
$encmethod, and$iv. Also, what is the byte length of$enckey? Also as requested, check your error log.$encmethod = "AES-256-CBC";$iv is 16 bytes $enckey is 32 and theyre based off of time and worked fine with a smaller file previously.