Bug #67286 [Opn]: Warning: mcrypt_encrypt(): Only keys of size 24 supported

Edit report at https://bugs.php.net/bug.php?id=67286&edit=1 ID: 67286 Updated by: levim@php.net Reported by: mengxiangbaidu at qq dot com Summary: Warning: mcrypt_encrypt(): Only keys of size 24 supported Status: Open Type: Bug Package: mcrypt related Operating System: windows PHP Version: 5.6.0beta2 Block user comment: N Private report: N New Comment: Bug 67287 is a duplicate of this one. Previous Comments: ------------------------------------------------------------------------ [2014-05-15 14:49:27] mengxiangbaidu at qq dot com Description: ------------ php version <= 5.5.12 string(6) "zxcvbn" Warning: mcrypt_encrypt(): Key of size 32 not supported by this algorithm. in /test.php on line 9 Warning: mcrypt_decrypt(): Key of size 32 not supported by this algorithm. in /test.php on line 17 string(0) "zxcvbn" php version >= 5.6 string(6) "zxcvbn" Warning: mcrypt_encrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 9 Warning: mcrypt_decrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 17 string(0) "" ================ I know this warning is good thing 。 If you are upgrading php 5.5 to 5.6 , the php program does not work 。This maybe a serious problem。 Test script: --------------- <?php function encrypt($data, $key) { $block = mcrypt_get_block_size(MCRYPT_TRIPLEDES, MCRYPT_MODE_ECB); $pad = $block - (strlen($data) % $block); $data .= str_repeat(chr($pad), $pad); $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_TRIPLEDES, MCRYPT_MODE_ECB), MCRYPT_RAND); $encrypted = mcrypt_encrypt(MCRYPT_TRIPLEDES, $key, $data, MCRYPT_MODE_ECB, $iv); return $encrypted; } function decrypt($data, $key) { $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_TRIPLEDES, MCRYPT_MODE_ECB), MCRYPT_RAND); $data = mcrypt_decrypt(MCRYPT_TRIPLEDES, $key, $data, MCRYPT_MODE_ECB, $iv); $block = mcrypt_get_block_size(MCRYPT_TRIPLEDES, MCRYPT_MODE_ECB); $pad = ord($data[($len = strlen($data)) - 1]); $decrypted = substr($data, 0, strlen($data) - $pad); return rtrim($decrypted); } $key = md5('asdfgh'); $original_data = 'zxcvbn'; var_dump($original_data); $data = encrypt($original_data, $key); $data = base64_encode($data); $data = base64_decode($data); $data = decrypt($data, $key); var_dump($data); Expected result: ---------------- string(6) "zxcvbn" Warning: mcrypt_encrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 9 Warning: mcrypt_decrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 17 string(0) "zxcvbn" Actual result: -------------- string(6) "zxcvbn" Warning: mcrypt_encrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 9 Warning: mcrypt_decrypt(): Key of size 32 not supported by this algorithm. Only keys of size 24 supported in /test.php on line 17 string(0) "" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67286&edit=1