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authorMattias Andrée <maandree@kth.se>2019-02-10 17:54:09 +0100
committerMattias Andrée <maandree@kth.se>2019-02-10 17:54:09 +0100
commit6e3af681aa5927d2ab2861e94c0cfea6fa42c0ab (patch)
treedc14cf6beeab03da867e7946bd6ab3601a66d370 /libsha2_hmac_update.3
parentlibsha2.h.0: securely erasing the state (diff)
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Minor improvement and man pages for HMAC
Signed-off-by: Mattias Andrée <maandree@kth.se>
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+.TH LIBSHA2_HMAC_UPDATE 3 2019-02-10 libjson
+.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)