linux/lib/crypto/mpi/mpi-pow.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* mpi-pow.c  -  MPI functions
 *	Copyright (C) 1994, 1996, 1998, 2000 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * Note: This code is heavily based on the GNU MP Library.
 *	 Actually it's the same code with only minor changes in the
 *	 way the data is stored; this is to support the abstraction
 *	 of an optional secure memory allocation which may be used
 *	 to avoid revealing of sensitive data due to paging etc.
 *	 The GNU MP Library itself is published under the LGPL;
 *	 however I decided to publish this code under the plain GPL.
 */

#include <linux/sched.h>
#include <linux/string.h>
#include "mpi-internal.h"
#include "longlong.h"

/****************
 * RES = BASE ^ EXP mod MOD
 */
int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
{ … }
EXPORT_SYMBOL_GPL(…);