mcrypt_get_block_size（）：模块初始化失败 - 函数出错

Question

I am trying to create a function which can encrypt a string. I have the following code but I am getting an error.

$key = "testkey"; // This is the function that does the encryption. Treat it as a black box. Do not edit! function encrypt($str, $key){ $block = mcrypt_get_block_size('ISO-8859-1', 'ecb'); $pad = $block - (strlen($str) % $block); $str .= str_repeat(chr($pad), $pad); return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB)); } // call the encrypt function and send it the key and the data to encrypt. Store the returned data in the $dataopt variable. $dataopt = encrypt($rawstring, $key);

The error is "mcrypt_get_block_size(): Module initialization failed on line on line 41" which is $block = mcrypt_get_block_size('ISO-8859-1', 'ecb');

Any ideas?

Answer 1

You are passing 'ISO-8859-1' as the first parameter to mcrypt_get_block_size.

You probably meant to pass MCRYPT_RIJNDAEL_128 as the first parameter.

Please note that mcrypt has been deprecated so you should probably look into other solutions. Have a look at this question for some alternatives.