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Add fallback options when generating salt #114

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when generating salt we try openssl first, then mcrypt
and as last resort mt_rand

Refs: #114
This commit is contained in:
Ricardo Bartels 2014-04-22 00:36:02 +02:00
parent c110f3fb28
commit e8bf0c95e8
1 changed files with 10 additions and 1 deletions
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11
php/modules/misc.php
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@ -88,7 +88,16 @@ function get_hashed_password($password) {
$cost = 10;
# Create a random salt
$salt = strtr(base64_encode(mcrypt_create_iv(16, MCRYPT_DEV_URANDOM)), '+', '.');
if (extension_loaded('openssl')) {
$salt = strtr(substr(base64_encode(openssl_random_pseudo_bytes(17)),0,22), '+', '.');
} elseif (extension_loaded('mcrypt')) {
$salt = strtr(substr(base64_encode(mcrypt_create_iv(17, MCRYPT_DEV_URANDOM)),0,22), '+', '.');
} else {
$salt = "";
for ($i = 0; $i < 22; $i++) {
$salt .= substr("./ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", mt_rand(0, 63), 1);
}
}
# Prefix information about the hash so PHP knows how to verify it later.
# "$2a$" Means we're using the Blowfish algorithm. The following two digits are the cost parameter.