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_make_truncated

SYNOPSIS

    void silc_mac_make_truncated(SilcMac mac,
                                 unsigned char *data,
                                 SilcUInt32 data_len,
                                 SilcUInt32 truncated_len,
                                 unsigned char *return_hash);

DESCRIPTION

Same as the silc_mac_make except that the returned MAC is truncated to the length indicated by the `truncated_len'. Some special applications may need this function. The `return_hash' must be at least the size of `truncated_len'.

NOTES

For security reasons, one should not truncate to less than half of the length of the true MAC lenght. However, since this routine may be used to non-critical applications this allows these dangerous truncations.