Forge AES-CBC 암호화

var cipher = forge.cipher.createCipher('AES-CBC', key);
cipher.start({iv: iv});
cipher.update(forge.util.createBuffer(plaintext));
cipher.finish();
var encrypted = cipher.output;

var decipher = forge.cipher.createDecipher('AES-CBC', key);
decipher.start({iv: iv});
decipher.update(encrypted);
decipher.finish();
var recovered = decipher.output;