RetroZilla/security/nss/lib/freebl/mpi/mp_gf2m-priv.h
2015-10-20 23:03:22 -04:00

103 lines
4.5 KiB
C

/*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Multi-precision Binary Polynomial Arithmetic Library.
*
* The Initial Developer of the Original Code is
* Sun Microsystems, Inc.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Sheueling Chang Shantz <sheueling.chang@sun.com> and
* Douglas Stebila <douglas@stebila.ca> of Sun Laboratories.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef _MP_GF2M_PRIV_H_
#define _MP_GF2M_PRIV_H_
#include "mpi-priv.h"
extern const mp_digit mp_gf2m_sqr_tb[16];
#if defined(MP_USE_UINT_DIGIT)
#define MP_DIGIT_BITS 32
#else
#define MP_DIGIT_BITS 64
#endif
/* Platform-specific macros for fast binary polynomial squaring. */
#if MP_DIGIT_BITS == 32
#define gf2m_SQR1(w) \
mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 16 | \
mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF]
#define gf2m_SQR0(w) \
mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \
mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) & 0xF]
#else
#define gf2m_SQR1(w) \
mp_gf2m_sqr_tb[(w) >> 60 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 56 & 0xF] << 48 | \
mp_gf2m_sqr_tb[(w) >> 52 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 48 & 0xF] << 32 | \
mp_gf2m_sqr_tb[(w) >> 44 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 40 & 0xF] << 16 | \
mp_gf2m_sqr_tb[(w) >> 36 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) >> 32 & 0xF]
#define gf2m_SQR0(w) \
mp_gf2m_sqr_tb[(w) >> 28 & 0xF] << 56 | mp_gf2m_sqr_tb[(w) >> 24 & 0xF] << 48 | \
mp_gf2m_sqr_tb[(w) >> 20 & 0xF] << 40 | mp_gf2m_sqr_tb[(w) >> 16 & 0xF] << 32 | \
mp_gf2m_sqr_tb[(w) >> 12 & 0xF] << 24 | mp_gf2m_sqr_tb[(w) >> 8 & 0xF] << 16 | \
mp_gf2m_sqr_tb[(w) >> 4 & 0xF] << 8 | mp_gf2m_sqr_tb[(w) & 0xF]
#endif
/* Multiply two binary polynomials mp_digits a, b.
* Result is a polynomial with degree < 2 * MP_DIGIT_BITS - 1.
* Output in two mp_digits rh, rl.
*/
void s_bmul_1x1(mp_digit *rh, mp_digit *rl, const mp_digit a, const mp_digit b);
/* Compute xor-multiply of two binary polynomials (a1, a0) x (b1, b0)
* result is a binary polynomial in 4 mp_digits r[4].
* The caller MUST ensure that r has the right amount of space allocated.
*/
void s_bmul_2x2(mp_digit *r, const mp_digit a1, const mp_digit a0, const mp_digit b1,
const mp_digit b0);
/* Compute xor-multiply of two binary polynomials (a2, a1, a0) x (b2, b1, b0)
* result is a binary polynomial in 6 mp_digits r[6].
* The caller MUST ensure that r has the right amount of space allocated.
*/
void s_bmul_3x3(mp_digit *r, const mp_digit a2, const mp_digit a1, const mp_digit a0,
const mp_digit b2, const mp_digit b1, const mp_digit b0);
/* Compute xor-multiply of two binary polynomials (a3, a2, a1, a0) x (b3, b2, b1, b0)
* result is a binary polynomial in 8 mp_digits r[8].
* The caller MUST ensure that r has the right amount of space allocated.
*/
void s_bmul_4x4(mp_digit *r, const mp_digit a3, const mp_digit a2, const mp_digit a1,
const mp_digit a0, const mp_digit b3, const mp_digit b2, const mp_digit b1,
const mp_digit b0);
#endif /* _MP_GF2M_PRIV_H_ */