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| author | nashe <thomas@chauchefoin.fr> | 2018-01-02 19:35:48 +0100 |
|---|---|---|
| committer | nashe <thomas@chauchefoin.fr> | 2018-01-02 19:35:48 +0100 |
| commit | 7d9e7183cbc189c356a9bff5d640706959eca1ee (patch) | |
| tree | b9a4a509fa0097ce1630afb2f5f96643c9d99ec4 /app/classes/CSRF.php | |
| parent | 17665eafb7e271198e6d11d57aae3593664dac58 (diff) | |
| download | planet-7d9e7183cbc189c356a9bff5d640706959eca1ee.tar planet-7d9e7183cbc189c356a9bff5d640706959eca1ee.tar.gz planet-7d9e7183cbc189c356a9bff5d640706959eca1ee.tar.bz2 planet-7d9e7183cbc189c356a9bff5d640706959eca1ee.tar.xz planet-7d9e7183cbc189c356a9bff5d640706959eca1ee.zip | |
Safely generate random HMAC keys for CSRF tokens
Diffstat (limited to 'app/classes/CSRF.php')
| -rw-r--r-- | app/classes/CSRF.php | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/app/classes/CSRF.php b/app/classes/CSRF.php index 3e23380..639f573 100644 --- a/app/classes/CSRF.php +++ b/app/classes/CSRF.php @@ -5,6 +5,9 @@ class CSRF /** @var string */ const HMAC_ALGORITHM = 'sha1'; + /** @var string */ + const SESSION_KEY_NAME = '_csrf_key'; + /** * Ensure that a CSRF token is valid for a given action. * @@ -44,6 +47,9 @@ class CSRF */ public static function getKey() { - return session_id(); + if (empty($_SESSION[self::SESSION_KEY_NAME])) { + $_SESSION[self::SESSION_KEY_NAME] = random_bytes(16); + } + return $_SESSION[self::SESSION_KEY_NAME]; } } |