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<?php /** * @author www.Tutorialspots.com * @copyright 2017 */ class RC5{ public static $S = array(); public static $r = 12; public static $w = 32; private static function cyclicShiftLeft($array, $positions) { $temp = array_slice($array, 0, $positions); $temp = array_merge(array_slice($array, $positions), $temp); return $temp; } private static function ROTL($v,$n,$m=32) { $y = sprintf("%0".$m."b",$v); $r = str_split($y); $r = self::cyclicShiftLeft($r,$n); return bindec(implode("",$r)) ; } private static function ROTR($v,$n,$m=32){ return self::ROTL($v,$m-$n,$m); } /* Key scheduling */ public static function rc5_init($K) { $b = 16; $u = self::$w/8; $c = max(1, ceil($b/$u)); $t = 2 * (self::$r+1); $L = array(); $P = 0xb7e15163; $Q = 0x9e3779b9; for($i = 0; $i < $b; $i++) $L[$i] = 0; for($i = $b-1, $L[$c-1] = 0; $i != -1; $i--) $L[$i/$u] = ($L[$i/$u] << 8) + ord($K[$i]);/////////////////// for(self::$S[0] = $P, $i = 1; $i < $t; $i++) self::$S[$i] = self::$S[$i-1] + $Q; $n = max($t,$c); for($A = $B = $i = $j = $k = 0; $k < 3 * $n; $k++, $i = ($i+1) % $t, $j = ($j+1) % $c) { $A = self::$S[$i] = self::ROTL(self::$S[$i] + ($A + $B), 3, self::$w); $B = $L[$j] = self::ROTL($L[$j] + ($A + $B), ($A + $B)&(self::$w-1), self::$w); } } public static function rc5_encrypt($pt) { $A = $pt[0] + self::$S[0]; $B = $pt[1] + self::$S[1]; for($i = 1; $i <= self::$r; $i++) { $A = self::ROTL($A ^ $B, $B&(self::$w-1), self::$w) + self::$S[2*$i]; $B = self::ROTL($B ^ $A, $A&(self::$w-1), self::$w) + self::$S[2*$i + 1]; } return array($A & (pow(2,self::$w)-1), $B & (pow(2,self::$w)-1)); } public static function rc5_decrypt($ct) { $B=$ct[1]; $A=$ct[0]; for($i = self::$r; $i > 0; $i--) { $B = self::ROTR($B - self::$S[2*$i + 1], $A&(self::$w-1), self::$w) ^ $A; $A = self::ROTR($A - self::$S[2*$i], $B&(self::$w-1), self::$w) ^ $B; } return array(($A - self::$S[0]) & (pow(2,self::$w)-1), ($B - self::$S[1]) & (pow(2,self::$w)-1)); } private static function _nullpadding($str,$length=16){ if(strlen($str)%$length != 0){ $str .= str_repeat(chr(0),$length-strlen($str)%$length); } return $str; } private static function key($key){ for ($s = array(), $i = 0; $i < 256; $i++) $s[$i] = $i; for ($j = 0, $i = 0; $i < 256; $i++) { $j = ($j + $s[$i] + ord($key[$i % strlen($key)])) % 256; $x = $s[$i]; $s[$i] = $s[$j]; $s[$j] = $x; } return $s; } // convert 32bits interger to 4characters string private static function _32bits2str($block){ return pack('N',$block & 0xffffffff); } // convert 4characters string to 32bits interger private static function _str232bits($block){ $dd=unpack('N*',$block); return $dd[1]; } //Stream cipher encrypt use RC5 public static function RC5enc($str,$key,$mode='ECB'){ $str = self::_nullpadding($str, 8);//var_dump($str);die(); $enc = ''; $k = self::key($key); //var_dump($k);die(); //self::rc5_init($k); for($i=0;$i<strlen($str)/8;$i++){ $block = substr($str,$i*8,8); $chr = array(self::_str232bits(substr($block,0,4)),self::_str232bits(substr($block,4,4))); $e = self::rc5_encrypt($chr); $enc .= self::_32bits2str($e[0]).self::_32bits2str($e[1]); } return $enc; } //Stream cipher decrypt use RC5 public static function RC5dec($str,$key,$mode='ECB'){ $enc = ''; $k = self::key($key); //self::rc5_init($k); for($i=0;$i<strlen($str)/8;$i++){ $block = substr($str,$i*8,8); $chr = array(self::_str232bits(substr($block,0,4)),self::_str232bits(substr($block,4,4))); $e = self::rc5_decrypt($chr); $enc .= self::_32bits2str($e[0]).self::_32bits2str($e[1]); } return rtrim($enc,chr(0)); } } $input="\xC8\x83\x11\xCE\x7F\x2D\xB0\x1E"; $keyy="\x73\xE6\x31\x48\x43\x57\x62\xCC\xA9\x3A\xCD\x55\x39\x4A\xC6\xF1"; // iv and key $input="\xEE\xDB\xA5\x21\x6D\x8F\x4B\x15"; $keyy="\x91\x5F\x46\x19\xBE\x41\xB2\x51\x63\x55\xA5\x01\x10\xA9\xCE\x91"; //dcp test case $input="\xB7\xB3\x42\x2F\x92\xFC\x69\x03"; $keyy="\xDC\x49\xDB\x13\x75\xA5\x58\x4F\x64\x85\xB4\x13\xB5\xF1\x2B\xAF"; //dcp test case //RC5::rc5_init(array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15)); //RC5::rc5_init(array(220,73,219,19,117,165,88,79,100,133,180,19,181,241,43,175)); RC5::rc5_init(str_split($keyy)); //$enc = (RC5::RC5enc("\x21\xA5\xDB\xEE\x15\x4B\x8F\x6D","\x91\x5F\x46\x19\xBE\x41\xB2\x51\x63\x55\xA5\x01\x10\xA9\xCE\x91")); $enc = (RC5::RC5enc($input,$keyy)); //$dec = (RC5::rc5_decrypt( $enc )); echo base64_encode($enc); echo $enc; $dec = (RC5::RC5dec($enc,$keyy)); var_dump(base64_encode($enc),$dec); //RC5enc("aaaaaaaaaaa","4124bc0a9335c27f"); echo "\x41\x41"; ?>

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0100.01018.66
8.3.50.0120.00416.50
8.3.40.0130.00318.86
8.3.30.0100.00718.79
8.3.20.0090.00019.10
8.3.10.0000.00923.64
8.3.00.0090.00318.16
8.2.180.0070.01416.63
8.2.170.0030.02022.96
8.2.160.0160.00320.64
8.2.150.0060.00324.18
8.2.140.0100.00024.66
8.2.130.0060.00326.16
8.2.120.0060.00321.18
8.2.110.0070.00422.37
8.2.100.0100.00318.22
8.2.90.0040.00419.53
8.2.80.0040.00418.05
8.2.70.0000.00917.75
8.2.60.0070.00418.28
8.2.50.0060.00318.18
8.2.40.0060.00322.45
8.2.30.0040.00421.04
8.2.20.0100.00018.35
8.2.10.0040.00418.35
8.2.00.0040.00418.34
8.1.280.0120.00625.92
8.1.270.0000.00823.99
8.1.260.0060.00326.35
8.1.250.0000.00928.09
8.1.240.0040.00722.39
8.1.230.0090.00317.76
8.1.220.0000.00917.89
8.1.210.0050.00518.77
8.1.200.0040.00717.60
8.1.190.0030.00617.48
8.1.180.0040.00418.10
8.1.170.0050.00518.77
8.1.160.0080.00019.18
8.1.150.0040.00419.10
8.1.140.0060.00619.69
8.1.130.0000.00819.09
8.1.120.0040.00417.59
8.1.110.0000.00817.63
8.1.100.0030.00717.51
8.1.90.0000.00917.58
8.1.80.0040.00417.61
8.1.70.0060.00317.62
8.1.60.0060.00317.79
8.1.50.0030.00617.70
8.1.40.0030.00617.58
8.1.30.0000.01017.72
8.1.20.0050.00517.80
8.1.10.0060.00317.66
8.1.00.0000.01017.56
8.0.300.0050.00518.77
8.0.290.0100.00016.88
8.0.280.0000.00818.57
8.0.270.0040.00417.41
8.0.260.0040.00417.03
8.0.250.0000.00817.08
8.0.240.0040.00416.99
8.0.230.0000.00816.95
8.0.220.0040.00417.02
8.0.210.0040.00417.07
8.0.200.0050.00317.01
8.0.190.0030.00717.15
8.0.180.0000.00816.98
8.0.170.0000.00817.01
8.0.160.0090.00016.93
8.0.150.0040.00716.96
8.0.140.0050.00316.95
8.0.130.0000.00613.54
8.0.120.0000.00817.03
8.0.110.0000.00817.14
8.0.100.0040.00417.01
8.0.90.0090.00017.10
8.0.80.0040.02017.07
8.0.70.0000.00817.00
8.0.60.0000.00816.96
8.0.50.0040.00417.00
8.0.30.0100.01017.18
8.0.20.0070.01317.40
8.0.10.0030.00617.14
8.0.00.0100.01016.89
7.4.330.0000.00715.55
7.4.320.0040.00416.77
7.4.300.0000.00716.68
7.4.290.0040.00716.62
7.4.280.0030.00616.59
7.4.270.0000.00816.75
7.4.260.0000.00613.50
7.4.250.0000.00816.63
7.4.240.0040.00416.76
7.4.230.0040.00416.75
7.4.220.0100.01616.82
7.4.210.0060.00916.73
7.4.200.0040.00416.56
7.4.160.0070.01016.65
7.4.150.0090.00917.40
7.4.140.0150.01117.86
7.4.130.0030.01716.68
7.4.120.0100.01416.76
7.4.110.0030.01616.53
7.4.100.0090.01516.63
7.4.90.0150.00416.60
7.4.80.0090.01219.39
7.4.70.0150.00416.67
7.4.60.0140.00416.73
7.4.50.0000.01916.53
7.4.40.0170.00016.57
7.4.30.0090.00916.50
7.4.10.0070.01315.21
7.4.00.0060.01315.11
7.3.330.0080.00013.60
7.3.320.0040.00413.52
7.3.310.0050.00216.60
7.3.300.0080.00016.60
7.3.290.0070.00916.55
7.3.280.0090.01016.56
7.3.270.0120.00617.40
7.3.260.0120.00616.49
7.3.250.0110.00716.56
7.3.240.0100.00916.55
7.3.230.0060.01316.50
7.3.210.0090.00916.63
7.3.200.0050.01416.47
7.3.190.0090.01016.54
7.3.180.0120.00616.50
7.3.170.0030.01516.53
7.3.160.0130.00416.57
7.3.130.0050.01115.02
7.3.120.0070.01315.08
7.3.110.0040.01415.10
7.3.100.0060.00814.85
7.3.90.0060.01015.10
7.3.80.0040.00814.94
7.3.70.0070.00715.14
7.3.60.0070.00815.01
7.3.50.0050.01114.93
7.3.40.0070.00715.05
7.3.30.0040.01515.07
7.3.20.0060.00816.73
7.3.10.0070.00816.67
7.3.00.0040.01116.68
7.2.330.0200.00016.90
7.2.320.0130.00716.75
7.2.310.0030.02116.82
7.2.300.0150.01216.84
7.2.290.0060.01816.80
7.2.260.0100.01015.23
7.2.250.0060.01515.24
7.2.240.0050.00915.44
7.2.230.0050.01015.12
7.2.220.0080.01015.34
7.2.210.0040.01315.16
7.2.200.0060.00915.21
7.2.190.0050.01015.06
7.2.180.0030.01015.20
7.2.170.0090.00715.20
7.2.160.0050.00815.22
7.2.150.0060.00816.93
7.2.140.0070.01116.96
7.2.130.0080.01216.90
7.2.120.0070.01016.79
7.2.110.0040.00916.89
7.2.100.0100.00816.85
7.2.90.0080.00717.14
7.2.80.0050.00816.90
7.2.70.0090.00917.18
7.2.60.0040.01416.81
7.2.50.0020.01617.03
7.2.40.0100.00817.28
7.2.30.0000.01517.01
7.2.20.0070.01016.99
7.2.10.0060.01017.08
7.2.00.0070.00917.78
7.1.330.0040.00815.81
7.1.320.0070.00815.85
7.1.310.0070.00915.78
7.1.300.0060.01015.70
7.1.290.0020.01115.87
7.1.280.0080.00815.87
7.1.270.0050.01015.95
7.1.260.0030.01215.80
7.1.250.0100.00816.01
7.1.240.0050.01015.72
7.1.230.0030.01515.77
7.1.220.0050.01315.77
7.1.210.0030.01215.88
7.1.200.0050.01015.86
7.1.190.0070.00915.92
7.1.180.0060.00815.94
7.1.170.0090.00415.71
7.1.160.0080.00815.85
7.1.150.0040.01315.79
7.1.140.0060.01115.70
7.1.130.0050.01115.96
7.1.120.0050.00915.89
7.1.110.0020.01315.67
7.1.100.0050.00816.51
7.1.90.0090.01015.82
7.1.80.0090.00816.03
7.1.70.0070.00816.24
7.1.60.0160.01021.84
7.1.50.0660.01021.56
7.1.40.0120.01521.45
7.1.30.0250.01421.51
7.1.20.0150.01121.58
7.1.10.0920.00615.56
7.1.00.0970.01215.57
7.0.330.0070.00915.36
7.0.320.0080.00915.49
7.0.310.0040.01315.50
7.0.300.0030.00815.18
7.0.290.0070.00915.51
7.0.280.0100.00515.33
7.0.270.0090.00715.53
7.0.260.0070.01015.43
7.0.250.0000.01515.53
7.0.240.0070.01215.44
7.0.230.0060.01015.58
7.0.220.0070.01215.58
7.0.210.0060.00815.32
7.0.200.0430.01615.38
7.0.190.0520.01415.30
7.0.180.0090.01515.01
7.0.170.0090.01315.18
7.0.160.0210.00915.19
7.0.150.0820.01815.18
7.0.140.1030.01115.25
7.0.130.0910.01115.03
7.0.120.0690.00915.28
7.0.110.0610.00915.19
7.0.100.0610.00815.31
7.0.90.0600.01115.21
7.0.80.0740.01115.03
7.0.70.0670.00915.13
7.0.60.0700.01215.15
7.0.50.0720.01215.22
7.0.40.0490.01214.00
7.0.30.0560.01313.96
7.0.20.0690.01313.84
7.0.10.0700.00913.90
7.0.00.0750.01513.96
5.6.400.0090.01114.79
5.6.390.0060.01114.85
5.6.380.0090.00914.38
5.6.370.0060.01314.59
5.6.360.0050.01214.75
5.6.350.0080.01314.17
5.6.340.0050.01214.54
5.6.330.0050.01014.67
5.6.320.0070.00814.63
5.6.310.0030.01414.83
5.6.300.0040.01414.75
5.6.290.0020.01814.59
5.6.280.0080.00814.49
5.6.270.0020.01314.60
5.6.260.0050.01114.65
5.6.250.0040.01414.54
5.6.240.0050.01314.63
5.6.230.0080.00514.59
5.6.220.0070.01014.57
5.6.210.0070.01314.54
5.6.200.0060.01014.39
5.6.190.0030.01414.63
5.6.180.0080.00914.50
5.6.170.0080.00714.71
5.6.160.0060.00914.47
5.6.150.0120.00914.47
5.6.140.0080.01314.43
5.6.130.0040.01814.48
5.6.120.0000.01714.43
5.6.110.0030.01414.60
5.6.100.0050.01014.45
5.6.90.0080.01114.33
5.6.80.0040.01514.49
5.6.70.0040.01214.43
5.6.60.0040.01314.51
5.6.50.0040.01514.65
5.6.40.0030.01814.48
5.6.30.0050.01314.46
5.6.20.0040.01414.50
5.6.10.0050.01514.40
5.6.00.0050.01114.37

preferences:
43.86 ms | 400 KiB | 5 Q