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