MAC Interface SilcMac MACs SILC_MAC_MAXLEN silc_mac_register silc_mac_unregister silc_mac_register_default silc_mac_unregister_all silc_mac_alloc silc_mac_free silc_mac_is_supported silc_mac_get_supported silc_mac_len silc_mac_get_name silc_mac_get_hash silc_mac_set_key silc_mac_get_key silc_mac_make silc_mac_make_with_key silc_mac_make_truncated silc_mac_init silc_mac_init_with_key silc_mac_update silc_mac_final

silc_mac_update

SYNOPSIS

    void silc_mac_update(SilcMac mac, const unsigned char *data,
                         SilcUInt32 data_len);

DESCRIPTION

This function may be called to add data to be used in the MAC computation. This can be called multiple times to add data from many sources before actually performing the MAC. Once you've added all the data you need you can call the silc_mac_final to actually produce the MAC.

EXAMPLE

    unsigned char mac[20];
    SilcUInt32 mac_len;

    silc_mac_init(mac);
    silc_mac_update(mac, data, data_len);
    silc_mac_update(mac, more_data, more_data_len);
    silc_mac_final(hac, mac, &mac_len);