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SILC Toolkit Reference Manual SILC Core Library SILC Authentication Interface SILC Message Interface SILC Channel Interface SILC Command Interface SILC Notify Interface SILC Status Types SILC Modes SILC ID Interface SILC ID Cache Interface SILC Argument Interface SILC Attributes Interface Packet Protocol Interface SILC Math Library SILC MP Interface SILC Math Interface SILC SFTP Library SILC SFTP Interface SFTP Filesystems Interface SILC Utility Library Basic SILC Types SILC Buffer Interface SILC Buffer Format Interface SILC Hash Table Interface SILC Logging Interface SILC Memory Interface SILC Mutex Interface SILC Thread Interface SILC Network Interface SILC Schedule Interface SILC Socket Interface SILC Protocol Interface SILC Config Interface SILC File Util Interface SILC String Util Interface SILC Util Interface SILC List Interface SILC Dynamic List Interface SILC VCard Interface SILC Application Utilities SILC Key Exchange Library SILC SKE Interface SKE Status Types SKE Diffie Hellman Groups SKE Payloads SILC Client Library Using SILC Client Library Tutorial Arguments for command_reply Client Operation SilcStatus Error Arguments in command_reply Client Operation Arguments for notify Client Operation Client Library Interface Reference SILC Crypto Library Introduction to SILC RNG SILC RNG Interface SILC Cipher API SILC PKCS API SILC PKCS#1 API SILC Hash Interface SILC HMAC Interface Resource Links SILC Project Website SILC Protocol Documentation SILC White Paper SILC FAQs
Function silc_hmac_update SYNOPSIS
        void silc_hmac_update(SilcHmac hmac, 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 HMAC.  Once you've
        added all the data you need you can call the silc_hmac_final to
        actually produce the MAC.
EXAMPLE
        unsigned char mac[20];
        SilcUInt32 mac_len;

        silc_hmac_init(hmac);
        silc_hmac_update(hmac, data, data_len);
        silc_hmac_update(hmac, more_data, more_data_len);
        silc_hmac_final(hmac, mac, &mac_len);
SILC HMAC Interface SilcHmac SilcHmacObject silc_hmac_register silc_hmac_unregister silc_hmac_register_default silc_hmac_unregister_all 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

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