.TH LIBKECCAK_STATE_FREE 3 LIBKECCAK-%VERSION%
.SH NAME
libkeccak_state_free - Destroys and deallocates a hash state with erasure
.SH SYNOPSIS
.LP
.nf
#include <libkeccak.h>
.P
void libkeccak_state_free(libkeccak_state_t *\fIstate\fP);
.fi
.P
Link with \fI-lkeccak\fP.
.SH DESCRIPTION
The
.BR libkeccak_state_free ()
function releases the allocations stored in \fI*state\fP,
and also release the allocation of \fIstate\fP.
.PP
The
.BR libkeccak_state_free ()
function securely erases sensitive data.
.SH RETURN VALUES
The
.BR libkeccak_state_free ()
function does not return any value.
.SH ERRORS
The
.BR libkeccak_state_free ()
function cannot fail.
.SH NOTES
A double call to
.BR libkeccak_state_free ()
will either result in a double free,
which is must likely to crash the process,
or free an allocation (that was created
between the calls) that was not intended
to be freed, resulting in undefined behaviour.
.SH SEE ALSO
.BR libkeccak_state_destroy (3),
.BR libkeccak_state_fast_free (3),
.BR libkeccak_state_create (3),
.BR libkeccak_state_initialise (3),
.BR libkeccak_state_reset (3),
.BR libkeccak_state_wipe (3)
.SH AUTHORS
Principal author, Mattias Andrée.  See the LICENSE file for the full
list of authors.
.SH BUGS
Please report bugs to https://github.com/maandree/libkeccak/issues or to
maandree@kth.se