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<?php $key = hex2bin('000102030405060708090a0b0c0d0e0f'); $message = hex2bin('5061726101676f6e000300'); $iv = mcrypt_create_iv(16, MCRYPT_DEV_URANDOM); $encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $message, MCRYPT_MODE_CBC, $iv); $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encrypted, MCRYPT_MODE_CBC, $iv); // This should still be padded: var_dump(bin2hex($decrypted)); // Let's strip off the padding: $stripped = rtrim($decrypted, "\0"); var_dump(bin2hex($stripped)); // Does this equal the original message? var_dump($stripped === $message);
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
Fatal error: Uncaught Error: Call to undefined function mcrypt_create_iv() in /in/fAt72:5 Stack trace: #0 {main} thrown in /in/fAt72 on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Call to undefined function mcrypt_create_iv() in /in/fAt72 on line 5
Process exited with code 255.

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