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[feature/passwords] Do not support 8-bit characters with $2a$ bcrypt

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8-bit unicode characters might reduce the security of the password hash
when using the $2a$ bcrypt prefix. Those types of characters are usually
not used in passwords but we should prevent this possible issue anyway.

PHPBB3-11610
This commit is contained in:
Marc Alexander 2013-06-15 12:11:51 +02:00
parent 8795fe9c77
commit f8bcf99c7f
1 changed files with 13 additions and 7 deletions
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20
phpBB/includes/crypto/manager.php
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@ -154,20 +154,26 @@ class phpbb_crypto_manager
* @param string $password Password that should be hashed * @param string $password Password that should be hashed
* @param string $type Hash type. Will default to standard hash type if * @param string $type Hash type. Will default to standard hash type if
* none is supplied * none is supplied
* @return string Password hash of supplied password * @return string|bool Password hash of supplied password or false if
* if something went wrong during hashing
* *
* @throws RunTimeException If hash type is not supported * @throws RunTimeException If hash type is not supported
*/ */
public function hash_password($password, $type = '') public function hash_password($password, $type = '')
{ {
if ($type === '') $type = ($type === '') ? $this->type : $type;
$hashing_algorithm = $this->container->get($type);
// Do not support 8-bit characters with $2a$ bcrypt
if ($type === 'crypto.driver.bcrypt' || ($type === 'crypto.driver.bcrypt_2y' && !$hashing_algorithm->is_supported()))
{ {
return $this->container->get($this->type)->hash($password); if (ord($password[strlen($password)-1]) & 128)
} {
else return false;
{ }
return $this->container->get($type)->hash($password);
} }
return $this->container->get($type)->hash($password);
} }
public function check_hash($password, $hash) public function check_hash($password, $hash)