mirror of
https://github.com/henrydcase/pqc.git
synced 2024-11-26 17:31:38 +00:00
324 lines
12 KiB
C
324 lines
12 KiB
C
#include <stdint.h>
|
|
|
|
#include "ntt.h"
|
|
#include "params.h"
|
|
#include "poly.h"
|
|
#include "polyvec.h"
|
|
|
|
/**************************************************************/
|
|
/************ Vectors of polynomials of length L **************/
|
|
/**************************************************************/
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyvecl_freeze
|
|
*
|
|
* Description: Reduce coefficients of polynomials in vector of length L
|
|
* to standard representatives.
|
|
*
|
|
* Arguments: - polyvecl *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyvecl_freeze(polyvecl *v) {
|
|
for (size_t i = 0; i < L; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_freeze(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyvecl_add
|
|
*
|
|
* Description: Add vectors of polynomials of length L.
|
|
* No modular reduction is performed.
|
|
*
|
|
* Arguments: - polyvecl *w: pointer to output vector
|
|
* - const polyvecl *u: pointer to first summand
|
|
* - const polyvecl *v: pointer to second summand
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyvecl_add(polyvecl *w, const polyvecl *u, const polyvecl *v) {
|
|
for (size_t i = 0; i < L; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_add(&w->vec[i], &u->vec[i], &v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyvecl_ntt
|
|
*
|
|
* Description: Forward NTT of all polynomials in vector of length L. Output
|
|
* coefficients can be up to 16*Q larger than input coefficients.
|
|
*
|
|
* Arguments: - polyvecl *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyvecl_ntt(polyvecl *v) {
|
|
for (size_t i = 0; i < L; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_ntt(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyvecl_pointwise_acc_invmontgomery
|
|
*
|
|
* Description: Pointwise multiply vectors of polynomials of length L, multiply
|
|
* resulting vector by 2^{-32} and add (accumulate) polynomials
|
|
* in it. Input/output vectors are in NTT domain representation.
|
|
* Input coefficients are assumed to be less than 22*Q. Output
|
|
* coeffcient are less than 2*L*Q.
|
|
*
|
|
* Arguments: - poly *w: output polynomial
|
|
* - const polyvecl *u: pointer to first input vector
|
|
* - const polyvecl *v: pointer to second input vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyvecl_pointwise_acc_invmontgomery(poly *w,
|
|
const polyvecl *u,
|
|
const polyvecl *v) {
|
|
PQCLEAN_DILITHIUM4_AVX2_pointwise_acc_avx(w->coeffs, u->vec->coeffs, v->vec->coeffs);
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyvecl_chknorm
|
|
*
|
|
* Description: Check infinity norm of polynomials in vector of length L.
|
|
* Assumes input coefficients to be standard representatives.
|
|
*
|
|
* Arguments: - const polyvecl *v: pointer to vector
|
|
* - uint32_t B: norm bound
|
|
*
|
|
* Returns 0 if norm of all polynomials is strictly smaller than B and 1
|
|
* otherwise.
|
|
**************************************************/
|
|
int PQCLEAN_DILITHIUM4_AVX2_polyvecl_chknorm(const polyvecl *v, uint32_t bound) {
|
|
for (size_t i = 0; i < L; ++i) {
|
|
if (PQCLEAN_DILITHIUM4_AVX2_poly_chknorm(&v->vec[i], bound)) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************/
|
|
/************ Vectors of polynomials of length K **************/
|
|
/**************************************************************/
|
|
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_reduce
|
|
*
|
|
* Description: Reduce coefficients of polynomials in vector of length K
|
|
* to representatives in [0,2*Q[.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_reduce(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_reduce(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_csubq
|
|
*
|
|
* Description: For all coefficients of polynomials in vector of length K
|
|
* subtract Q if coefficient is bigger than Q.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_csubq(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_csubq(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: polyveck_freeze
|
|
*
|
|
* Description: Reduce coefficients of polynomials in vector of length K
|
|
* to standard representatives.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_freeze(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_freeze(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_add
|
|
*
|
|
* Description: Add vectors of polynomials of length K.
|
|
* No modular reduction is performed.
|
|
*
|
|
* Arguments: - polyveck *w: pointer to output vector
|
|
* - const polyveck *u: pointer to first summand
|
|
* - const polyveck *v: pointer to second summand
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_add(polyveck *w, const polyveck *u, const polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_add(&w->vec[i], &u->vec[i], &v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_sub
|
|
*
|
|
* Description: Subtract vectors of polynomials of length K.
|
|
* Assumes coefficients of polynomials in second input vector
|
|
* to be less than 2*Q. No modular reduction is performed.
|
|
*
|
|
* Arguments: - polyveck *w: pointer to output vector
|
|
* - const polyveck *u: pointer to first input vector
|
|
* - const polyveck *v: pointer to second input vector to be
|
|
* subtracted from first input vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_sub(polyveck *w, const polyveck *u, const polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_sub(&w->vec[i], &u->vec[i], &v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_shiftl
|
|
*
|
|
* Description: Multiply vector of polynomials of Length K by 2^D without modular
|
|
* reduction. Assumes input coefficients to be less than 2^{32-D}.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_shiftl(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_shiftl(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_ntt
|
|
*
|
|
* Description: Forward NTT of all polynomials in vector of length K. Output
|
|
* coefficients can be up to 16*Q larger than input coefficients.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_ntt(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_ntt(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_invntt_montgomery
|
|
*
|
|
* Description: Inverse NTT and multiplication by 2^{32} of polynomials
|
|
* in vector of length K. Input coefficients need to be less
|
|
* than 2*Q.
|
|
*
|
|
* Arguments: - polyveck *v: pointer to input/output vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_invntt_montgomery(polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_invntt_montgomery(&v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_chknorm
|
|
*
|
|
* Description: Check infinity norm of polynomials in vector of length K.
|
|
* Assumes input coefficients to be standard representatives.
|
|
*
|
|
* Arguments: - const polyveck *v: pointer to vector
|
|
* - uint32_t B: norm bound
|
|
*
|
|
* Returns 0 if norm of all polynomials are strictly smaller than B and 1
|
|
* otherwise.
|
|
**************************************************/
|
|
int PQCLEAN_DILITHIUM4_AVX2_polyveck_chknorm(const polyveck *v, uint32_t bound) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
if (PQCLEAN_DILITHIUM4_AVX2_poly_chknorm(&v->vec[i], bound)) {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_power2round
|
|
*
|
|
* Description: For all coefficients a of polynomials in vector of length K,
|
|
* compute a0, a1 such that a mod Q = a1*2^D + a0
|
|
* with -2^{D-1} < a0 <= 2^{D-1}. Assumes coefficients to be
|
|
* standard representatives.
|
|
*
|
|
* Arguments: - polyveck *v1: pointer to output vector of polynomials with
|
|
* coefficients a1
|
|
* - polyveck *v0: pointer to output vector of polynomials with
|
|
* coefficients Q + a0
|
|
* - const polyveck *v: pointer to input vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_power2round(polyveck *v1, polyveck *v0, const polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_power2round(&v1->vec[i], &v0->vec[i], &v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_decompose
|
|
*
|
|
* Description: For all coefficients a of polynomials in vector of length K,
|
|
* compute high and low bits a0, a1 such a mod Q = a1*ALPHA + a0
|
|
* with -ALPHA/2 < a0 <= ALPHA/2 except a1 = (Q-1)/ALPHA where we
|
|
* set a1 = 0 and -ALPHA/2 <= a0 = a mod Q - Q < 0.
|
|
* Assumes coefficients to be standard representatives.
|
|
*
|
|
* Arguments: - polyveck *v1: pointer to output vector of polynomials with
|
|
* coefficients a1
|
|
* - polyveck *v0: pointer to output vector of polynomials with
|
|
* coefficients Q + a0
|
|
* - const polyveck *v: pointer to input vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_decompose(
|
|
polyveck *v1, polyveck *v0, const polyveck *v) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_decompose(&v1->vec[i], &v0->vec[i], &v->vec[i]);
|
|
}
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: PQCLEAN_DILITHIUM4_AVX2_polyveck_make_hint
|
|
*
|
|
* Description: Compute hint vector.
|
|
*
|
|
* Arguments: - polyveck *h: pointer to output vector
|
|
* - const polyveck *v0: pointer to low part of input vector
|
|
* - const polyveck *v1: pointer to high part of input vector
|
|
*
|
|
* Returns number of 1 bits.
|
|
**************************************************/
|
|
uint32_t PQCLEAN_DILITHIUM4_AVX2_polyveck_make_hint(
|
|
polyveck *h,
|
|
const polyveck *v0,
|
|
const polyveck *v1) {
|
|
uint32_t s = 0;
|
|
|
|
for (size_t i = 0; i < K; ++i) {
|
|
s += PQCLEAN_DILITHIUM4_AVX2_poly_make_hint(&h->vec[i], &v0->vec[i], &v1->vec[i]);
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
/*************************************************
|
|
* Name: polyveck_use_hint
|
|
*
|
|
* Description: Use hint vector to correct the high bits of input vector.
|
|
*
|
|
* Arguments: - polyveck *w: pointer to output vector of polynomials with
|
|
* corrected high bits
|
|
* - const polyveck *v: pointer to input vector
|
|
* - const polyveck *h: pointer to input hint vector
|
|
**************************************************/
|
|
void PQCLEAN_DILITHIUM4_AVX2_polyveck_use_hint(polyveck *w, const polyveck *v, const polyveck *h) {
|
|
for (size_t i = 0; i < K; ++i) {
|
|
PQCLEAN_DILITHIUM4_AVX2_poly_use_hint(&w->vec[i], &v->vec[i], &h->vec[i]);
|
|
}
|
|
}
|