(PHP 5 >= 5.5.0, PHP 7)
openssl_pbkdf2 — 锟斤拷锟斤拷一锟斤拷 PKCS5 v2 PBKDF2 锟街凤拷锟斤拷
$password
, string $salt
, int $key_length
, int $iterations
[, string $digest_algorithm = "sha1"
] ) : stringopenssl_pbkdf2() 锟斤拷锟斤拷 PBKDF2 (Password-Based Key Derivation Function 2), 锟斤拷PKCS5 v2锟叫讹拷锟斤拷锟揭伙拷锟斤拷锟皆匡拷锟斤拷频锟斤拷锟斤拷锟�.
password锟斤拷锟斤拷锟斤拷钥锟斤拷锟斤拷锟缴碉拷锟斤拷锟诫。
saltPBKDF2 锟狡硷拷一锟斤拷锟斤拷锟斤拷锟斤拷64位(8锟街斤拷)锟斤拷锟斤拷锟斤拷锟斤拷值锟斤拷
key_length希锟斤拷锟斤拷锟斤拷锟皆匡拷某锟斤拷取锟�
iterations锟斤拷要锟侥碉拷锟斤拷锟斤拷锟斤拷 » NIST 锟斤拷锟斤拷锟斤拷锟斤拷10,000锟斤拷.
digest_algorithm锟斤拷openssl_get_md_methods()锟叫匡拷选锟斤拷散锟叫伙拷摘要锟姐法.默锟斤拷锟斤拷 SHA-1.
锟缴癸拷锟斤拷锟斤拷锟斤拷原始锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE.
Example #1 openssl_pbkdf2() 锟斤拷锟斤拷
<?php
$password = 'yOuR-pAs5w0rd-hERe';
$salt = openssl_random_pseudo_bytes(12);
$keyLength = 40;
$iterations = 10000;
$generated_key = openssl_pbkdf2($password, $salt, $keyLength, $iterations, 'sha256');
echo bin2hex($generated_key)."\n";
echo base64_encode($generated_key)."\n";
?>