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php encryption and decryption processing class

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Release： 2016-07-25 08:42:28
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  2. class SysCrypt {
  4. private $crypt_key;
  6. // 构造函数
  7. public function __construct($crypt_key) {
  8. $this -> crypt_key = $crypt_key;
  9. }
  11. public function php_encrypt($txt) {
  12. srand((double)microtime() * 1000000);
  13. $encrypt_key = md5(rand(0,32000));
  14. $ctr = 0;
  15. $tmp = '';
  16. for($i = 0;$i $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
  17. $tmp .= $encrypt_key[$ctr].($txt[$i]^$encrypt_key[$ctr++]);
  18. }
  19. return base64_encode(self::__key($tmp,$this -> crypt_key));
  20. }
  22. public function php_decrypt($txt) {
  23. $txt = self::__key(base64_decode($txt),$this -> crypt_key);
  24. $tmp = '';
  25. for($i = 0;$i < strlen($txt); $i++) {
  26. $md5 = $txt[$i];
  27. $tmp .= $txt[++$i] ^ $md5;
  28. }
  29. return $tmp;
  30. }
  32. private function __key($txt,$encrypt_key) {
  33. $encrypt_key = md5($encrypt_key);
  34. $ctr = 0;
  35. $tmp = '';
  36. for($i = 0; $i < strlen($txt); $i++) {
  37. $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
  38. $tmp .= $txt[$i] ^ $encrypt_key[$ctr++];
  39. }
  40. return $tmp;
  41. }
  43. public function __destruct() {
  44. $this -> crypt_key = null;
  45. }
  46. }
  49. $sc = new SysCrypt('phpwms');
  50. $text = '110';
  51. print($sc -> php_encrypt($text));
  52. print('
    ');
  53. print($sc -> php_decrypt($sc -> php_encrypt($text)));
  54. ?>
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加密解密, php


Related labels：
php加密解密处理类
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