1--TEST-- 2mcrypt_cfb 3--SKIPIF-- 4<?php if (!extension_loaded("mcrypt")) print "skip"; ?> 5--FILE-- 6<?php 7$key = "0123456789012345"; 8$secret = "PHP Testfest 2008"; 9$cipher = MCRYPT_RIJNDAEL_128; 10 11$iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher, MCRYPT_MODE_CFB), MCRYPT_RAND); 12$enc_data = mcrypt_encrypt($cipher, $key, $secret, MCRYPT_MODE_CFB, $iv); 13 14// we have to trim as AES rounds the blocks and decrypt doesnt detect that 15echo trim(mcrypt_decrypt($cipher, $key, $enc_data, MCRYPT_MODE_CFB, $iv)) . "\n"; 16 17// a warning must be issued if we don't use a IV on a AES cipher, that usually requires an IV 18var_dump(mcrypt_decrypt($cipher, $key, $enc_data, MCRYPT_MODE_CFB)); 19 20--EXPECTF-- 21PHP Testfest 2008 22 23Warning: mcrypt_decrypt(): Encryption mode requires an initialization vector of size 16 in %s on line %d 24bool(false) 25
