libsha2_hmac_update.3

.TH LIBSHA2_HMAC_UPDATE 3 2019-02-10 libsha2
.SH NAME
libsha2_hmac_update \- Feed data into a HMAC-SHA-2 algorithm
.SH SYNOPSIS
.nf
#include <libsha2.h>

void libsha2_hmac_update(struct libsha2_hmac_state *restrict \fIstate\fP, const void *restrict \fImessage\fP, size_t \fImsglen\fP);
.fi
.PP
Link with
.IR \-lsha2 .
.SH DESCRIPTION
The
.BR libsha2_hmac_update ()
function feeds the first
.I msglen
.B bits
(must equivalent to 0 modulus 8) of
.I message
into the hashing state of the
.I state
parameter.
.SH RETURN VALUE
None.
.SH ERRORS
None.
.SH EXAMPLES
None.
.SH APPLICATION USAGE
None.
.SH RATIONALE
None.
.SH FUTURE DIRECTIONS
None.
.SH NOTES
None.
.SH BUGS
None.
.SH SEE ALSO
.BR libsha2_hmac_digest (3),
.BR libsha2_hmac_init (3)