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/* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0"
*
* Written by Nir Drucker and Shay Gueron
* AWS Cryptographic Algorithms Group.
* (ndrucker@amazon.com, gueron@amazon.com)
*/
#pragma once
#include "defs.h"
#define LEVEL 1
////////////////////////////////////////////
// BIKE Parameters
///////////////////////////////////////////
#define N0 2
#ifndef LEVEL
# define LEVEL 1
#endif
#if(LEVEL == 3)
# ifdef INDCPA
# define R_BITS 19853
# else
# define R_BITS 24821
# endif
# define DV 103
# define T1 199
# define THRESHOLD_COEFF0 15.932
# define THRESHOLD_COEFF1 0.0052936
// The gfm code is optimized to a block size in this case:
# define BLOCK_SIZE 32768
#elif(LEVEL == 1)
// 64-bits of post-quantum security parameters (BIKE paper):
# ifdef INDCPA
# define R_BITS 10163
# else
# define R_BITS 11779
# endif
# define DV 71
# define T1 134
# define THRESHOLD_COEFF0 13.530
# define THRESHOLD_COEFF1 0.0069721
// The gfm code is optimized to a block size in this case:
# define BLOCK_SIZE (16384)
#else
# error "Bad level, choose one of 1/3"
#endif
#ifdef INDCPA
# define NUM_OF_SEEDS 2
#else
# define NUM_OF_SEEDS 3
#endif
// Round the size to the nearest byte.
// SIZE suffix, is the number of bytes (uint8_t).
#define N_BITS (R_BITS * N0)
#define R_SIZE DIVIDE_AND_CEIL(R_BITS, 8)
#define R_QW DIVIDE_AND_CEIL(R_BITS, 8 * QW_SIZE)
#define R_YMM DIVIDE_AND_CEIL(R_BITS, 8 * YMM_SIZE)
#define R_ZMM DIVIDE_AND_CEIL(R_BITS, 8 * ZMM_SIZE)
#define N_SIZE DIVIDE_AND_CEIL(N_BITS, 8)
#define R_BLOCKS DIVIDE_AND_CEIL(R_BITS, BLOCK_SIZE)
#define R_PADDED (R_BLOCKS * BLOCK_SIZE)
#define R_PADDED_SIZE (R_PADDED / 8)
#define R_PADDED_QW (R_PADDED / 64)
#define N_BLOCKS DIVIDE_AND_CEIL(N_BITS, BLOCK_SIZE)
#define N_PADDED (N_BLOCKS * BLOCK_SIZE)
#define N_PADDED_SIZE (N_PADDED / 8)
#define N_PADDED_QW (N_PADDED / 64)
#define R_DDQWORDS_BITS (DIVIDE_AND_CEIL(R_BITS, ALL_YMM_SIZE) * ALL_YMM_SIZE)
bike_static_assert((R_BITS % ALL_YMM_SIZE != 0), rbits_512_err);
#define N_DDQWORDS_BITS (R_DDQWORDS_BITS + R_BITS)
bike_static_assert((N_BITS % ALL_YMM_SIZE != 0), nbits_512_err);
#define LAST_R_QW_LEAD (R_BITS & MASK(6))
#define LAST_R_QW_TRAIL (64 - LAST_R_QW_LEAD)
#define LAST_R_QW_MASK MASK(LAST_R_QW_LEAD)
#define LAST_R_BYTE_LEAD (R_BITS & MASK(3))
#define LAST_R_BYTE_TRAIL (8 - LAST_R_BYTE_LEAD)
#define LAST_R_BYTE_MASK MASK(LAST_R_BYTE_LEAD)
// BIKE auxiliary functions parameters:
#define ELL_K_BITS 256
#define ELL_K_SIZE (ELL_K_BITS / 8)
////////////////////////////////
// Parameters for the BG decoder.
////////////////////////////////
#define DELTA 3
#define SLICES (LOG2_MSB(DV) + 1)
#define BGF_DECODER
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