AES CBC PHP & CLI

gistfile1.txt

// This code generate AES block compatible with how Go does things

$string = "string to encrypt";
$key = "my secret key";
$iv = openssl_random_pseudo_bytes(16);
echo base64_encode($iv.openssl_encrypt($string, "aes-256-cbc", $key, OPENSSL_RAW_DATA, $iv));

// The shell equivalent:
// echo 'string to encrypt' | openssl enc -aes-256-cbc -nosalt -K $KEY -iv acfa7a047800b2f221f2c4f7d626eafb | base64
// In which:
//  $KEY is the hex string of the binary, padded, key
//  $IV is the hex string of the binary IV