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Function silc_hmac_init

SYNOPSIS

    void silc_hmac_init(SilcHmac hmac);

DESCRIPTION

    Sometimes calling the silc_hmac_make might not be the most
    optimal case of doing MACs.  If you have a lot of different data
    that you need to put together for computing a MAC you may either
    put them into a buffer and compute the MAC from the buffer by
    calling the silc_hmac_make, or you can use the silc_hmac_init,
    silc_hmac_update and silc_hmac_final to do the MAC.  This function
    prepares the allocated HMAC context for this kind of MAC 
    computation.  The caller must have been called the function
    silc_hmac_set_key before calling this function.  To add the
    data to be used in the MAC computation call the silc_hmac_update
    function.

>> 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