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Function silc_hmac_make_truncated

SYNOPSIS

    void silc_hmac_make_truncated(SilcHmac hmac, 
                                  unsigned char *data, 
                                  uint32 data_len,
                                  uint32 truncated_len,
                                  unsigned char *return_hash);

DESCRIPTION

    Same as the silc_hmac_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.

>> SilcHMACAPI
>> SilcHmac
>> SilcHmacObject
>> silc_hmac_register
>> silc_hmac_unregister
>> silc_hmac_register_default
>> silc_hmac_alloc
>> silc_hmac_free
>> silc_hmac_is_supported
>> silc_hmac_get_supported
>> silc_hmac_len
>> silc_hmac_get_hash
>> silc_hmac_get_name
>> silc_hmac_set_key
>> silc_hmac_make
>> silc_hmac_make_with_key
>> silc_hmac_make_truncated
>> silc_hmac_init
>> silc_hmac_init_with_key
>> silc_hmac_update
>> silc_hmac_final