PHP 使用 jwt 方式用户身份认证

封装类

// +----------------------------------------------------------------------
// | Created by PhpStorm
// +----------------------------------------------------------------------
// | Date: 2018/9/10
// +----------------------------------------------------------------------
// | Blog: ( https://www.woann.cn )
// +----------------------------------------------------------------------
// | Author: woann <304550409@qq.com>
// +----------------------------------------------------------------------
namespace AppUtility;

class Jwtbase {
    //头部
    private static $header=array(
        \alg\=>\HS256\, //生成signature的算法
        \typ\=>\JWT\  //类型
    );
    //使用HMAC生成信息摘要时所使用的密钥
    private static $key=\KEY\;

    
    public static function getToken(array $payload)
    {
        $arr = [
            \iss\=>\yamecent\, //该JWT的签发者
            \iat\=>time(), //签发时间
            \exp\=>time()+36002415, //过期时间
            \nbf\=>time(), //该时间之前不接收处理该Token
            \sub\=>\\, //面向的用户
            \jti\=>md5(uniqid(\JWT\).time()) //该Token唯一标识
        ];
        $payload = array_merge($arr,$payload);
        if(is_array($payload))
        {
            $base64header=self::base64UrlEncode(json_encode(self::$header,JSON_UNESCAPED_UNICODE));
            $base64payload=self::base64UrlEncode(json_encode($payload,JSON_UNESCAPED_UNICODE));
            $token=$base64header.\.\.$base64payload.\.\.self::signature($base64header.\.\.$base64payload,self::$key,self::$header[\alg\]);
            return $token;
        }else{
            return false;
        }
    }

    
    public static function verifyToken(string $Token)
    {
        $tokens = explode(\.\, $Token);
        if (count($tokens) != 3)
            return false;

        list($base64header, $base64payload, $sign) = $tokens;

        //获取jwt算法
        $base64decodeheader = json_decode(self::base64UrlDecode($base64header), JSON_OBJECT_AS_ARRAY);
        if (empty($base64decodeheader[\alg\]))
            return false;

        //签名验证
        if (self::signature($base64header . \.\ . $base64payload, self::$key, $base64decodeheader[\alg\]) !== $sign)
            return false;

        $payload = json_decode(self::base64UrlDecode($base64payload), JSON_OBJECT_AS_ARRAY);

        //签发时间大于当前服务器时间验证失败
        if (isset($payload[\iat\]) && $payload[\iat\] > time())
            return false;

        //过期时间小宇当前服务器时间验证失败
        if (isset($payload[\exp\]) && $payload[\exp\] < time())
            return false;

        //该nbf时间之前不接收处理该Token
        if (isset($payload[\nbf\]) && $payload[\nbf\] > time())
            return false;

        return $payload;
    }

    
    private static function base64UrlEncode(string $input)
    {
        return str_replace(\=\, \\, strtr(base64_encode($input), \+/\, \-_\));
    }

    
    private static function base64UrlDecode(string $input)
    {
        $remainder = strlen($input)  4;
        if ($remainder) {
            $addlen = 4 - $remainder;
            $input .= str_repeat(\=\, $addlen);
        }
        return base64_decode(strtr($input, \-_\, \+/\));
    }

    
    private static function signature(string $input, string $key, string $alg = \HS256\)
    {
        $alg_config=array(
            \HS256\=>\sha256\
        );
        return self::base64UrlEncode(hash_hmac($alg_config[$alg], $input, $key,true));
    }
}

使用

1.生成

$token = Jwtbase::getToken([\user_id\=>$user->id]);//生成token

2.验证

$header = $request->header(\Authorization\);//验证
        $token = explode(\ \,$header);
        if(!$header || !$token){
            return $this->json(419,\登录信息已过期，重新登录\);
        }
        $data = Jwtbase::verifyToken($token[1]);
        if(!$data){
            return $this->json(419,\登录信息已过期，重新登录\);
        }

打赏

感谢支持与鼓励～