#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 PARAM_SECURITY Define the security level corresponding to the chosen parameters #define PARAM_DFR_EXP Define the decryption failure rate corresponding to the chosen parameters #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 UTILS_REJECTION_THRESHOLD Define the rejection threshold used to generate given weight vectors (see vector_set_random_fixed_weight function) #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_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 fot the higher bits of a vector #define SHA512_BYTES Define the size of SHA512 output in bytes #define SEED_BYTES Define the size of the seed in bytes #define SEEDEXPANDER_MAX_LENGTH Define the seed expander max length */ #define PARAM_N 17669 #define PARAM_N1 46 #define PARAM_N2 384 #define PARAM_N1N2 17664 #define PARAM_OMEGA 66 #define PARAM_OMEGA_E 75 #define PARAM_OMEGA_R 75 #define PARAM_SECURITY 128 #define PARAM_DFR_EXP 128 #define SECRET_KEY_BYTES PQCLEAN_HQCRMRS128_CLEAN_CRYPTO_SECRETKEYBYTES #define PUBLIC_KEY_BYTES PQCLEAN_HQCRMRS128_CLEAN_CRYPTO_PUBLICKEYBYTES #define SHARED_SECRET_BYTES PQCLEAN_HQCRMRS128_CLEAN_CRYPTO_BYTES #define CIPHERTEXT_BYTES PQCLEAN_HQCRMRS128_CLEAN_CRYPTO_CIPHERTEXTBYTES #define UTILS_REJECTION_THRESHOLD 16767881 #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 15 #define PARAM_M 8 #define PARAM_GF_POLY 0x11D #define PARAM_GF_MUL_ORDER 255 #define PARAM_K 16 #define PARAM_G 31 #define PARAM_FFT 5 #define RS_POLY_COEFS 89,69,153,116,176,117,111,75,73,233,242,233,65,210,21,139,103,173,67,118,105,210,174,110,74,69,228,82,255,181,1 #define BITMASK(a, size) ((1UL << ((a) % (size))) - 1) #define RED_MASK BITMASK(PARAM_N, 64) #define SHA512_BYTES 64 #define SEED_BYTES 40 #define SEEDEXPANDER_MAX_LENGTH 4294967295 #endif