Created
August 14, 2015 17:28
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Pydio : create sha256 hash
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<?php | |
$user = 'admin'; | |
$password ='password'; | |
/**********************************************************************/ | |
define("PBKDF2_HASH_ALGORITHM", "sha256"); | |
define("PBKDF2_ITERATIONS", 1000); | |
define("PBKDF2_SALT_BYTE_SIZE", 24); | |
define("PBKDF2_HASH_BYTE_SIZE", 24); | |
define("HASH_SECTIONS", 4); | |
define("HASH_ALGORITHM_INDEX", 0); | |
define("HASH_ITERATION_INDEX", 1); | |
define("HASH_SALT_INDEX", 2); | |
define("HASH_PBKDF2_INDEX", 3); | |
define("USE_OPENSSL_RANDOM", false); | |
function pbkdf2_create_hash($password) | |
{ | |
// format: algorithm:iterations:salt:hash | |
$salt = base64_encode(mcrypt_create_iv(PBKDF2_SALT_BYTE_SIZE, MCRYPT_DEV_URANDOM)); | |
return PBKDF2_HASH_ALGORITHM . ":" . PBKDF2_ITERATIONS . ":" . $salt . ":" . | |
base64_encode(pbkdf2_apply( | |
PBKDF2_HASH_ALGORITHM, | |
$password, | |
$salt, | |
PBKDF2_ITERATIONS, | |
PBKDF2_HASH_BYTE_SIZE, | |
true | |
)); | |
} | |
/* | |
* PBKDF2 key derivation function as defined by RSA's PKCS #5: https://www.ietf.org/rfc/rfc2898.txt | |
* $algorithm - The hash algorithm to use. Recommended: SHA256 | |
* $password - The password. | |
* $salt - A salt that is unique to the password. | |
* $count - Iteration count. Higher is better, but slower. Recommended: At least 1000. | |
* $key_length - The length of the derived key in bytes. | |
* $raw_output - If true, the key is returned in raw binary format. Hex encoded otherwise. | |
* Returns: A $key_length-byte key derived from the password and salt. | |
* | |
* Test vectors can be found here: https://www.ietf.org/rfc/rfc6070.txt | |
* | |
* This implementation of PBKDF2 was originally created by https://defuse.ca | |
* With improvements by http://www.variations-of-shadow.com | |
*/ | |
function pbkdf2_apply($algorithm, $password, $salt, $count, $key_length, $raw_output = false) | |
{ | |
$algorithm = strtolower($algorithm); | |
if(!in_array($algorithm, hash_algos(), true)) | |
die('PBKDF2 ERROR: Invalid hash algorithm.'); | |
if($count <= 0 || $key_length <= 0) | |
die('PBKDF2 ERROR: Invalid parameters.'); | |
$hash_length = strlen(hash($algorithm, "", true)); | |
$block_count = ceil($key_length / $hash_length); | |
$output = ""; | |
for ($i = 1; $i <= $block_count; $i++) { | |
// $i encoded as 4 bytes, big endian. | |
$last = $salt . pack("N", $i); | |
// first iteration | |
$last = $xorsum = hash_hmac($algorithm, $last, $password, true); | |
// perform the other $count - 1 iterations | |
for ($j = 1; $j < $count; $j++) { | |
$xorsum ^= ($last = hash_hmac($algorithm, $last, $password, true)); | |
} | |
$output .= $xorsum; | |
} | |
if($raw_output) | |
return substr($output, 0, $key_length); | |
else | |
return bin2hex(substr($output, 0, $key_length)); | |
} | |
$hash = pbkdf2_create_hash($password); | |
echo "Hash: ".$hash; | |
echo "\n"; | |
echo "SQL Query: UPDATE ajxp_users SET password='$hash' WHERE login='admin'"; |
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