Online PHP editor | output for r9pYv

@ 2017-01-22T17:12:37Z

<?php

        $textToEncrypt = "Secret Text to Encrypt";
        $encryptionMethod = 'aes-256-cbc';
        $secretHash = "315a5504d921f8327f73a356d2bbcbf1"; // <---- you have to use some persistent.

        $iv_size = openssl_cipher_iv_length($encryptionMethod );
        $iv = openssl_random_pseudo_bytes($iv_size);

        //To encrypt
        $encryptedMessage = openssl_encrypt($textToEncrypt, $encryptionMethod, $secretHash, 0, $iv);

        //Concatenate iv with data
        $encryptedMessageWithIv = bin2hex($iv) . $encryptedMessage;

        //To Decrypt
        $iv_size = openssl_cipher_iv_length($encryptionMethod );
        $iv = hex2bin(substr($encryptedMessageWithIv, 0, $iv_size*2));

        $decryptedMessage = openssl_decrypt(substr($encryptedMessageWithIv, $iv_size*2), $encryptionMethod, $secretHash, 0, $iv);

        echo "Encrypted: $encryptedMessageWithIv <br>Decrypted: $decryptedMessage";

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 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught Error: Call to undefined function openssl_cipher_iv_length() in /in/r9pYv:7 Stack trace: #0 {main} thrown in /in/r9pYv on line 7
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Call to undefined function openssl_cipher_iv_length() in /in/r9pYv:7 Stack trace: #0 {main} thrown in /in/r9pYv on line 7
Process exited with code 255.
Output for 5.4.45, 5.6.0 - 5.6.40: Fatal error: Call to undefined function openssl_cipher_iv_length() in /in/r9pYv on line 7
Process exited with code 255.

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