note 44728 modified in function.mcrypt-encrypt by cece

[Editor's note: original script posted by andrewcare at execulink dot com 07-Jul-2004 04:45] I needed to add trim($data) to andrew's example for it to remove some leftover hex garbage from the decrypted string. Here's the working example: <?php $data = "Plaintext"; // Data to encrypt (http://www.ciphersbyritter.com/glossary.htm#Encryption) $key = "Secret"; // Encryption key (http://www.ciphersbyritter.com/glossary.htm#Key) $td = MCRYPT_RIJNDAEL_256; // Encryption cipher (http://www.ciphersbyritter.com/glossary.htm#Cipher) $iv_size = mcrypt_get_iv_size($td, MCRYPT_MODE_ECB); // Dependant on cipher/mode combination (http://www.php.net/manual/en/function.mcrypt-get-iv-size.php) $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); // Creates an IV (http://www.ciphersbyritter.com/glossary.htm#IV) echo "Original data: $data<br />"; $encrypted_data = mcrypt_encrypt($td, $key, $data, MCRYPT_MODE_CBC, $iv); // Encrypts data (http://www.php.net/manual/en/function.mcrypt-encrypt.php) echo "Encrypted data: " . bin2hex($encrypted_data) . "<br />"; // bin2hex to compensate for random character values $data = mcrypt_decrypt($td, $key, $encrypted_data, MCRYPT_MODE_CBC, $iv); // Decrypts data (http://www.php.net/manual/en/function.mcrypt-decrypt.php) echo trim($data); ?> Thanks andrew, you saved me some time! Hope this saves someone else! --was-- I needed to add trim($data) to andrew's example for it to remove some leftover hex garbage from the decrypted string. Here's the working example: <?php $data = "Plaintext"; // Data to encrypt (http://www.ciphersbyritter.com/glossary.htm#Encryption) $key = "Secret"; // Encryption key (http://www.ciphersbyritter.com/glossary.htm#Key) $td = MCRYPT_RIJNDAEL_256; // Encryption cipher (http://www.ciphersbyritter.com/glossary.htm#Cipher) $iv_size = mcrypt_get_iv_size($td, MCRYPT_MODE_ECB); // Dependant on cipher/mode combination (http://www.php.net/manual/en/function.mcrypt-get-iv-size.php) $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); // Creates an IV (http://www.ciphersbyritter.com/glossary.htm#IV) echo "Original data: $data<br />"; $encrypted_data = mcrypt_encrypt($td, $key, $data, MCRYPT_MODE_CBC, $iv); // Encrypts data (http://www.php.net/manual/en/function.mcrypt-encrypt.php) echo "Encrypted data: " . bin2hex($encrypted_data) . "<br />"; // bin2hex to compensate for random character values $data = mcrypt_decrypt($td, $key, $encrypted_data, MCRYPT_MODE_CBC, $iv); // Decrypts data (http://www.php.net/manual/en/function.mcrypt-decrypt.php) echo trim($data); ?> Thanks andrew, you saved me some time! Hope this saves someone else! http://php.net/manual/en/function.mcrypt-encrypt.php