I'm sure I'm overlooking something fundamental in the docs. I'm prototyping a method to decrypt a short password that was encrypted using AES 256. I suspect this is defaulting to AES 128 but I can't find how to change it. Can someone please point me in the right direction?

std::string WolfDec(std::string sPw)
{
    Aes enc;
    Aes dec;

    const byte key[] = "Some32ByteKeyForTestingTheDecode";
    const byte iv[] = "A16BitIVisNeeded";

    byte plain[1024];
    byte cipher[1024];

    memset(plain, 0, 1024);
    memset(cipher, 0, 1024);
   
    // Decrypt cipher to plain
    memmove(cipher, sPw.data(), sPw.length());
    wc_AesSetKey(&dec, key, sizeof(key), iv, AES_DECRYPTION);
    wc_AesCbcDecrypt(&dec, plain, cipher, sizeof(cipher));

    std::string sRet;
    sRet.append((const char*)plain);

    return sRet;
}