The main issue appears to be that your string_encrypt and string_decrypt PHP functions don’t have access to the $key variable, so for the encryption key mcrypt_encrypt is using \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0. See this question for an explanation. PHP should report a notice that key is undefined, have you turned off error reporting perhaps? Echo the key from … Read more
I tend to use Homebrew on Mac. It will install and configure all the stuff for you. Link Then you should be able to install it with brew install mcrypt php53-mcrypt and it’ll Just Work ™. You can replace the 53 with whatever version of PHP you’re using, such as php56-mcrypt or php70-mcrypt. If you’re … Read more
Had the same issue – PHP7 missing mcrypt. This worked for me. When asked, keep local PHP configuration files. sudo apt-get update sudo apt-get install mcrypt php7.0-mcrypt sudo apt-get upgrade Restart FPM (or Apache or NGINX etc.) after installation.
If you want to use Rijndael256 in your C# application you have to set the BlockSize to 256. RijndaelManaged rj = new RijndaelManaged(); rj.BlockSize = 256; And then your iv has to be 256 bits long as well. see SymmetricAlgorithm.BlockSize Property Or the other way round: Currently your C# application uses Rijndael128 and so must … Read more
To decrypt this form of encryption, you will need to get a version of Rijndael. One can be found here. Then you will need to simulate the key and text padding used in the PHP Mcrypt module. They add ‘\0’ to pad out the text and key to the correct size. They are using a … Read more
I’m not terribly familiar with this stuff, but it seems like trying MCRYPT_RIJNDAEL_256 in place of MCRYPT_RIJNDAEL_128 would be an obvious next step… Edit: You’re right — this isn’t what you need. MCRYPT_RIJNDAEL_128 is in fact the right choice. According to the link you provided, your key and IV are twice as long as they … Read more
I followed below steps to install mcrypt for PHP7.2 using PECL. Install PECL apt-get install php-pecl Before installing MCRYPT you must install libmcrypt apt-get install libmcrypt-dev libreadline-dev Install MCRYPT 1.0.1 using PECL pecl install mcrypt-1.0.1 After the successful installation You should add “extension=mcrypt.so” to php.ini Please comment below if you need any assistance. 🙂 IMPORTANT … Read more
Here I can see problems on both sides. Please keep in mind that what you get when encoding is not string, but rather an array of bytes. So in PHP you don’t need to urlencode cyphertext. base64 encoding is all you need. When you open base64_encode help you see base64_encode Encodes the given data with … Read more
You should use openssl_encrypt instead.
Here is what worked for me: <?php $str=”Content”; if (strlen($str) % 16) { $str = str_pad($str, strlen($str) + 16 – strlen($str) % 16, “\0”); } $key = ‘KEY’; if (strlen($key) % 16) { $key = str_pad($key, strlen($key) + 16 – strlen($key) % 16, “\0”); } $res1 = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str, MCRYPT_MODE_ECB); echo strToHex($res1) . ‘ … Read more