public function encrypt($data)
    {
        $cipher = $box[] = $key[] = '';

        $pwd_length = strlen($this->key);
        $data_length = strlen($data);

        for ($i = 0; $i < 256; $i++) {
            $key[$i] = ord($this->key[$i % $pwd_length]);
            $box[$i] = $i;
        }

        for ($j = $i = 0; $i < 256; $i++) {
            $j = ($j + $box[$i] + $key[$i]) % 256;
            $tmp = $box[$i];
            $box[$i] = $box[$j];
            $box[$j] = $tmp;
        }

        for ($a = $j = $i = 0; $i < $data_length; $i++) {
            $a = ($a + 1) % 256;
            $j = ($j + $box[$a]) % 256;

            $tmp = $box[$a];
            $box[$a] = $box[$j];
            $box[$j] = $tmp;

            $k = $box[(($box[$a] + $box[$j]) % 256)];
            $cipher .= chr(ord($data[$i]) ^ $k);
        }

        return strtoupper(StrUtil::String2Hex($cipher));
    }
public function encrypt($data)
    {
        $cipher = $box[] = $key[] = '';

        $pwd_length = strlen($this->key);
        $data_length = strlen($data);

        for ($i = 0; $i < 256; $i++) {
            $key[$i] = ord($this->key[$i % $pwd_length]);
            $box[$i] = $i;
        }

        for ($j = $i = 0; $i < 256; $i++) {
            $j = ($j + $box[$i] + $key[$i]) % 256;
            $tmp = $box[$i];
            $box[$i] = $box[$j];
            $box[$j] = $tmp;
        }

        for ($a = $j = $i = 0; $i < $data_length; $i++) {
            $a = ($a + 1) % 256;
            $j = ($j + $box[$a]) % 256;

            $tmp = $box[$a];
            $box[$a] = $box[$j];
            $box[$j] = $tmp;

            $k = $box[(($box[$a] + $box[$j]) % 256)];
            $cipher .= chr(ord($data[$i]) ^ $k);
        }

        return strtoupper(StrUtil::String2Hex($cipher));
    }
public function encrypt ( $ data ) { $ cipher = $ box [ ] = $ key [ ] = '' ; $ pwd_length = strlen ( $ this -> key ) ; $ data_length = strlen ( $ data ) ; for ( $ i = 0 ; $ i < 256 ; $ i ++ ) { $ key [ $ i ] = ord ( $ this -> key [ $ i % $ pwd_length ] ) ; $ box [ $ i ] = $ i ; } for ( $ j = $ i = 0 ; $ i < 256 ; $ i ++ ) { $ j = ( $ j + $ box [ $ i ] + $ key [ $ i ] ) % 256 ; $ tmp = $ box [ $ i ] ; $ box [ $ i ] = $ box [ $ j ] ; $ box [ $ j ] = $ tmp ; } for ( $ a = $ j = $ i = 0 ; $ i < $ data_length ; $ i ++ ) { $ a = ( $ a + 1 ) % 256 ; $ j = ( $ j + $ box [ $ a ] ) % 256 ; $ tmp = $ box [ $ a ] ; $ box [ $ a ] = $ box [ $ j ] ; $ box [ $ j ] = $ tmp ; $ k = $ box [ ( ( $ box [ $ a ] + $ box [ $ j ] ) % 256 ) ] ; $ cipher .= chr ( ord ( $ data [ $ i ] ) ^ $ k ) ; } return strtoupper ( StrUtil :: String2Hex ( $ cipher ) ) ; }
rc4加密算法
@param $data
@return string
@throws \Exception
rc4加密算法