RC4_set_key
RC4_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), key);
LCRYPTO_USED(RC4_set_key);
LCRYPTO_ALIAS(RC4_set_key);
void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data);
RC4_set_key(&key, rt->key_len, rt->key);
RC4_set_key(&key, rt->key_len, rt->key);
RC4_set_key(&rc4_ks, 16, key16);
RC4_set_key(rc4ctx, lkey, key);