79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/**
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*
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* <bf_decoding.h>
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*
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* @version 2.0 (March 2019)
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*
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* Reference ISO-C11 Implementation of the LEDAcrypt KEM-LT cipher using GCC built-ins.
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*
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* In alphabetical order:
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*
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* @author Marco Baldi <m.baldi@univpm.it>
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* @author Alessandro Barenghi <alessandro.barenghi@polimi.it>
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* @author Franco Chiaraluce <f.chiaraluce@univpm.it>
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* @author Gerardo Pelosi <gerardo.pelosi@polimi.it>
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* @author Paolo Santini <p.santini@pm.univpm.it>
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*
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* This code is hereby placed in the public domain.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**/
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#pragma once
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#include "qc_ldpc_parameters.h"
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#include "gf2x_limbs.h"
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#define ITERATIONS_MAX (2)
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int bf_decoding(DIGIT err[],
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const POSITION_T HtrPosOnes[N0][DV],
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const POSITION_T QtrPosOnes[N0][M], // N0 vectors containing exp.s of Qtr ones
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DIGIT privateSyndrome[] // 1 polynomial -- param. in/out
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);
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/* Definitions for DFR level 2^-64 */
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#if (CATEGORY == 1) && (N0 == 2) && (DFR_SL_LEVEL == 0)
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#define B0 44
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#define T_BAR 4
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#endif
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#if ((CATEGORY == 2) || (CATEGORY == 3)) && (N0 == 2) && (DFR_SL_LEVEL == 0)
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#define B0 64
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#define T_BAR 5
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#endif
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#if ((CATEGORY == 4) || (CATEGORY == 5)) && (N0 == 2) && (DFR_SL_LEVEL == 0)
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#define B0 89
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#define T_BAR 6
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#endif
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/* Definitions for DFR level 2^-SL */
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#if (CATEGORY == 1) && (N0 == 2) && (DFR_SL_LEVEL == 1)
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#define B0 43
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#define T_BAR 4
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#endif
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#if ((CATEGORY == 2) || (CATEGORY == 3)) && (N0 == 2) && (DFR_SL_LEVEL == 1)
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#define B0 64
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#define T_BAR 5
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#endif
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#if ((CATEGORY == 4) || (CATEGORY == 5)) && (N0 == 2) && (DFR_SL_LEVEL == 1)
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#define B0 88
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#define T_BAR 6
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#endif
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