#ifndef HQC_PARAMETERS_H #define HQC_PARAMETERS_H /** * @file parameters.h * @brief Parameters of the HQC_KEM IND-CCA2 scheme */ #include "api.h" #define CEIL_DIVIDE(a, b) (((a)+(b)-1)/(b)) /*!< Divide a by b and ceil the result*/ /* #define PARAM_N Define the parameter n of the scheme #define PARAM_N1 Define the parameter n1 of the scheme (length of Reed-Solomon code) #define PARAM_N2 Define the parameter n2 of the scheme (length of Duplicated Reed-Muller code) #define PARAM_N1N2 Define the length in bits of the Concatenated code #define PARAM_OMEGA Define the parameter omega of the scheme #define PARAM_OMEGA_E Define the parameter omega_e of the scheme #define PARAM_OMEGA_R Define the parameter omega_r of the scheme #define SECRET_KEY_BYTES Define the size of the secret key in bytes #define PUBLIC_KEY_BYTES Define the size of the public key in bytes #define SHARED_SECRET_BYTES Define the size of the shared secret in bytes #define CIPHERTEXT_BYTES Define the size of the ciphertext in bytes #define VEC_N_SIZE_BYTES Define the size of the array used to store a PARAM_N sized vector in bytes #define VEC_K_SIZE_BYTES Define the size of the array used to store a PARAM_K sized vector in bytes #define VEC_N1Y_SIZE_BYTES Define the size of the array used to store a PARAM_N1 sized vector in bytes #define VEC_N1N2_SIZE_BYTES Define the size of the array used to store a PARAM_N1N2 sized vector in bytes #define VEC_N_SIZE_64 Define the size of the array used to store a PARAM_N sized vector in 64 bits #define VEC_K_SIZE_64 Define the size of the array used to store a PARAM_K sized vector in 64 bits #define VEC_N1_SIZE_64 Define the size of the array used to store a PARAM_N1 sized vector in 64 bits #define VEC_N1N2_SIZE_64 Define the size of the array used to store a PARAM_N1N2 sized vector in 64 bits #define PARAM_DELTA Define the parameter delta of the scheme (correcting capacity of the Reed-Solomon code) #define PARAM_M Define a positive integer #define PARAM_GF_POLY Generator polynomial of galois field GF(2^PARAM_M), represented in hexadecimial form #define PARAM_GF_POLY_WT Hamming weight of PARAM_GF_POLY #define PARAM_GF_POLY_M2 Distance between the primitive polynomial first two set bits #define PARAM_GF_MUL_ORDER Define the size of the multiplicative group of GF(2^PARAM_M), i.e 2^PARAM_M -1 #define PARAM_K Define the size of the information bits of the Reed-Solomon code #define PARAM_G Define the size of the generator polynomial of Reed-Solomon code #define PARAM_FFT The additive FFT takes a 2^PARAM_FFT polynomial as input We use the FFT to compute the roots of sigma, whose degree if PARAM_DELTA=24 The smallest power of 2 greater than 24+1 is 32=2^5 #define RS_POLY_COEFS Coefficients of the generator polynomial of the Reed-Solomon code #define RED_MASK A mask for the higher bits of a vector #define SHAKE256_512_BYTES Define the size of SHAKE-256 output in bytes #define SEED_BYTES Define the size of the seed in bytes #define SALT_SIZE_BYTES Define the size of a salt in bytes */ #define PARAM_N 57637 #define PARAM_N1 90 #define PARAM_N2 640 #define PARAM_N1N2 57600 #define PARAM_OMEGA 131 #define PARAM_OMEGA_E 149 #define PARAM_OMEGA_R 149 #define SECRET_KEY_BYTES PQCLEAN_HQC256_CLEAN_CRYPTO_SECRETKEYBYTES #define PUBLIC_KEY_BYTES PQCLEAN_HQC256_CLEAN_CRYPTO_PUBLICKEYBYTES #define SHARED_SECRET_BYTES PQCLEAN_HQC256_CLEAN_CRYPTO_BYTES #define CIPHERTEXT_BYTES PQCLEAN_HQC256_CLEAN_CRYPTO_CIPHERTEXTBYTES #define VEC_N_SIZE_BYTES CEIL_DIVIDE(PARAM_N, 8) #define VEC_K_SIZE_BYTES PARAM_K #define VEC_N1_SIZE_BYTES PARAM_N1 #define VEC_N1N2_SIZE_BYTES CEIL_DIVIDE(PARAM_N1N2, 8) #define VEC_N_SIZE_64 CEIL_DIVIDE(PARAM_N, 64) #define VEC_K_SIZE_64 CEIL_DIVIDE(PARAM_K, 8) #define VEC_N1_SIZE_64 CEIL_DIVIDE(PARAM_N1, 8) #define VEC_N1N2_SIZE_64 CEIL_DIVIDE(PARAM_N1N2, 64) #define PARAM_DELTA 29 #define PARAM_M 8 #define PARAM_GF_POLY 0x11D #define PARAM_GF_POLY_WT 5 #define PARAM_GF_POLY_M2 4 #define PARAM_GF_MUL_ORDER 255 #define PARAM_K 32 #define PARAM_G 59 #define PARAM_FFT 5 #define RS_POLY_COEFS 49,167,49,39,200,121,124,91,240,63,148,71,150,123,87,101,32,215,159,71,201,115,97,210,186,183,141,217,123,12,31,243,180,219,152,239,99,141,4,246,191,144,8,232,47,27,141,178,130,64,124,47,39,188,216,48,199,187,1 #define RED_MASK 0x1fffffffff #define SHAKE256_512_BYTES 64 #define SEED_BYTES 40 #define SALT_SIZE_BYTES 16 #endif