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how to generate AES key in php

Gk Quiz Earner answered on August 24, 2022 Popularity 5/10 Helpfulness 2/10

answer how to generate AES key in php

how to generate AES key in php

Comment

<?php
$key_size = 256;  //For a 256 bit key, you can use 128 or 512 as well. 
$key = uuid_gen(($key_size / 8)); //8 bits in a byte

echo 'key length is ' .strlen($key) ."\n"; //The number of bytes

/* Returns Raw Binary */
function uuid_gen($length) {

    $fp = @fopen('/dev/urandom','rb');

    if ($fp !== FALSE) {
        $result .= @fread($fp, $length);
        @fclose($fp);
    } else {
        trigger_error('Can not open /dev/urandom.');
    }

    return $result;
}

Popularity 5/10 Helpfulness 2/10 Language php

Source: stackoverflow.com

Tags: aes generate key php

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