php实现双因素身份验证2FA的TOTP一次性密码生成算法代码
代码语言:php
所属分类:其他
代码描述:php实现双因素身份验证2FA的TOTP一次性密码生成算法代码,TOTP是Time-based One-Time Password,基于时间的一次性密码生成器。
代码标签: php 双因素 身份 验证 2FA TOTP 一次性 密码 生成 算法 代码
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
<?php
class TOTP {
private $secret;
private $digits;
private $period;
public function __construct($secret = null, $digits = 6, $period = 30) {
$this->secret = $secret ?: $this->generateSecret();
$this->digits = $digits;
$this->period = $period;
}
public function generateSecret($length = 16) {
$validChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
$secret = '';
for ($i = 0; $i < $length; $i++) {
$secret .= $validChars[random_int(0, strlen($validChars) - 1)];
}
return $secret;
}
public function getSecret() {
return $this->secret;
}
public function generateCode($timestamp = null) {
if ($timestamp === null) {
$timestamp = time();
}
$timeSlice = floor($timestamp / $this->period);
$secretKey = $this->base32Decode($this->secret);
$time = chr(0).chr(0).chr(0).chr(0).pack('N*', $timeSlice);
$hm = hash_hmac('SHA1', $time, $secretKey, true);
$offset = ord(substr($hm, -1)) & 0x0F;
$hashpart = substr($hm, $offset, 4);
$value = unpack('N', $ha.........完整代码请登录后点击上方下载按钮下载查看
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