PHP Cryptographic decryption Processing class

Class Syscrypt { Private $crypt _key; constructor function Public function __construct ($crypt _key) { $this-Crypt_key = $crypt _key; } Public Function Php_encrypt ($txt) { Srand (Double) microtime () * 1000000); $encrypt _key = MD5 (rand (0,32000)); $ctr = 0; $tmp = "; for ($i = 0; $i $ctr = $ctr = = strlen ($encrypt _key)? 0: $ctr; $tmp. = $encrypt _key[$ctr]. ($txt [$i]^ $encrypt _key[$ctr + +]); } Return Base64_encode (Self::__key ($tmp, $this-Crypt_key)); } Public Function Php_decrypt ($txt) { $txt = Self::__key (Base64_decode ($txt), $this-Crypt_key); $tmp = "; for ($i = 0; $i < strlen ($txt); $i + +) { $MD 5 = $txt [$i]; $tmp. = $txt [+ + $i] ^ $MD 5; } return $tmp; } Private Function __key ($txt, $encrypt _key) { $encrypt _key = MD5 ($encrypt _key); $ctr = 0; $tmp = "; for ($i = 0; $i < strlen ($txt); $i + +) { $ctr = $ctr = = strlen ($encrypt _key)? 0: $ctr; $tmp. = $txt [$i] ^ $encrypt _key[$ctr + +]; } return $tmp; } Public Function __destruct () { $this-crypt_key = null; } } $SC = new Syscrypt (' phpwms '); $text = ' 110 '; Print ($SC-Php_encrypt ($text)); Print (' '); Print ($SC-Php_decrypt ($SC-Php_encrypt ($text))); ?> Copy Code

Encrypted decryption, PHP

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