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authorMarc Alexander <admin@m-a-styles.de>2018-06-17 15:44:28 +0200
committerMarc Alexander <admin@m-a-styles.de>2018-06-17 15:44:28 +0200
commit02cbb864a5b6df62e978a69c368c8ec5ca35d8a3 (patch)
treee604967ada13a1ec9c3a1674bdd5a6f85fce7d9d /phpBB
parent7245bc9977235d7165d35a5671ccb5b22fc042e2 (diff)
parent9e50e52fa5c72ee668c0d4c43b15e441f31ada5c (diff)
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Merge pull request #5245 from rubencm/ticket/15693
[ticket/15693] Fix get_rand_string()
Diffstat (limited to 'phpBB')
-rw-r--r--phpBB/includes/functions.php8
1 files changed, 6 insertions, 2 deletions
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 4aae84705b..270d513a26 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -66,23 +66,27 @@ function set_var(&$result, $var, $type, $multibyte = false)
/**
* Generates an alphanumeric random string of given length
*
+* @param int $num_chars Length of random string, defaults to 8
+*
* @return string
*/
function gen_rand_string($num_chars = 8)
{
// [a, z] + [0, 9] = 36
- return substr(strtoupper(base_convert(unique_id(), 16, 36)), 0, $num_chars);
+ return substr(strtoupper(base_convert(bin2hex(random_bytes($num_chars)), 16, 36)), 0, $num_chars);
}
/**
* Generates a user-friendly alphanumeric random string of given length
* We remove 0 and O so users cannot confuse those in passwords etc.
*
+* @param int $num_chars Length of random string, defaults to 8
+*
* @return string
*/
function gen_rand_string_friendly($num_chars = 8)
{
- $rand_str = unique_id();
+ $rand_str = bin2hex(random_bytes($num_chars));
// Remove Z and Y from the base_convert(), replace 0 with Z and O with Y
// [a, z] + [0, 9] - {z, y} = [a, z] + [0, 9] - {0, o} = 34