PHP Cryptographic decryption Processing class

Source: Internet
Author: User
Tags crypt
  1. Class Syscrypt {
  2. Private $crypt _key;
  3. constructor function
  4. Public function __construct ($crypt _key) {
  5. $this-Crypt_key = $crypt _key;
  6. }
  7. Public Function Php_encrypt ($txt) {
  8. Srand (Double) microtime () * 1000000);
  9. $encrypt _key = MD5 (rand (0,32000));
  10. $ctr = 0;
  11. $tmp = ";
  12. for ($i = 0; $i
  13. $ctr = $ctr = = strlen ($encrypt _key)? 0: $ctr;
  14. $tmp. = $encrypt _key[$ctr]. ($txt [$i]^ $encrypt _key[$ctr + +]);
  15. }
  16. Return Base64_encode (Self::__key ($tmp, $this-Crypt_key));
  17. }
  18. Public Function Php_decrypt ($txt) {
  19. $txt = Self::__key (Base64_decode ($txt), $this-Crypt_key);
  20. $tmp = ";
  21. for ($i = 0; $i < strlen ($txt); $i + +) {
  22. $MD 5 = $txt [$i];
  23. $tmp. = $txt [+ + $i] ^ $MD 5;
  24. }
  25. return $tmp;
  26. }
  27. Private Function __key ($txt, $encrypt _key) {
  28. $encrypt _key = MD5 ($encrypt _key);
  29. $ctr = 0;
  30. $tmp = ";
  31. for ($i = 0; $i < strlen ($txt); $i + +) {
  32. $ctr = $ctr = = strlen ($encrypt _key)? 0: $ctr;
  33. $tmp. = $txt [$i] ^ $encrypt _key[$ctr + +];
  34. }
  35. return $tmp;
  36. }
  37. Public Function __destruct () {
  38. $this-crypt_key = null;
  39. }
  40. }
  41. $SC = new Syscrypt (' phpwms ');
  42. $text = ' 110 ';
  43. Print ($SC-Php_encrypt ($text));
  44. Print ('
    ');
  45. Print ($SC-Php_decrypt ($SC-Php_encrypt ($text)));
  46. ?>
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Encrypted decryption, PHP
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