mirror of
https://github.com/henrydcase/pqc.git
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218 lines
10 KiB
C
218 lines
10 KiB
C
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/// @file rainbow_keypair_computation.c
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/// @brief Implementations for functions in rainbow_keypair_computation.h
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///
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#include "blas.h"
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#include "blas_comm.h"
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#include "rainbow_blas.h"
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#include "rainbow_keypair.h"
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#include "rainbow_keypair_computation.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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void PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_extcpk_to_pk( pk_t *pk, const ext_cpk_t *cpk ) {
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const unsigned char *idx_l1 = cpk->l1_Q1;
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const unsigned char *idx_l2 = cpk->l2_Q1;
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for (unsigned i = 0; i < _V1; i++) {
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for (unsigned j = i; j < _V1; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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idx_l1 = cpk->l1_Q2;
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idx_l2 = cpk->l2_Q2;
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for (unsigned i = 0; i < _V1; i++) {
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for (unsigned j = _V1; j < _V1 + _O1; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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idx_l1 = cpk->l1_Q3;
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idx_l2 = cpk->l2_Q3;
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for (unsigned i = 0; i < _V1; i++) {
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for (unsigned j = _V1 + _O1; j < _PUB_N; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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idx_l1 = cpk->l1_Q5;
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idx_l2 = cpk->l2_Q5;
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for (unsigned i = _V1; i < _V1 + _O1; i++) {
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for (unsigned j = i; j < _V1 + _O1; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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idx_l1 = cpk->l1_Q6;
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idx_l2 = cpk->l2_Q6;
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for (unsigned i = _V1; i < _V1 + _O1; i++) {
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for (unsigned j = _V1 + _O1; j < _PUB_N; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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idx_l1 = cpk->l1_Q9;
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idx_l2 = cpk->l2_Q9;
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for (unsigned i = _V1 + _O1; i < _PUB_N; i++) {
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for (unsigned j = i; j < _PUB_N; j++) {
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unsigned pub_idx = PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_idx_of_trimat(i, j, _PUB_N);
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memcpy( & pk->pk[ _PUB_M_BYTE * pub_idx ], idx_l1, _O1_BYTE );
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memcpy( (&pk->pk[ _PUB_M_BYTE * pub_idx ]) + _O1_BYTE, idx_l2, _O2_BYTE );
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idx_l1 += _O1_BYTE;
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idx_l2 += _O2_BYTE;
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}
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}
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}
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static
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void calculate_F_from_Q_ref( sk_t *Fs, const sk_t *Qs, sk_t *Ts ) {
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// Layer 1
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// F_sk.l1_F1s[i] = Q_pk.l1_F1s[i]
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memcpy( Fs->l1_F1, Qs->l1_F1, _O1_BYTE * N_TRIANGLE_TERMS(_V1) );
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// F_sk.l1_F2s[i] = ( Q_pk.l1_F1s[i] + Q_pk.l1_F1s[i].transpose() ) * T_sk.t1 + Q_pk.l1_F2s[i]
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memcpy( Fs->l1_F2, Qs->l1_F2, _O1_BYTE * _V1 * _O1 );
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batch_2trimat_madd( Fs->l1_F2, Qs->l1_F1, Ts->t1, _V1, _V1_BYTE, _O1, _O1_BYTE );
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/*
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Layer 2
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computations:
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F_sk.l2_F1s[i] = Q_pk.l2_F1s[i]
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Q1_T1 = Q_pk.l2_F1s[i]*T_sk.t1
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F_sk.l2_F2s[i] = Q1_T1 + Q_pk.l2_F2s[i] + Q_pk.l2_F1s[i].transpose() * T_sk.t1
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F_sk.l2_F5s[i] = UT( t1_tr* ( Q1_T1 + Q_pk.l2_F2s[i] ) ) + Q_pk.l2_F5s[i]
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Q1_Q1T_T4 = (Q_pk.l2_F1s[i] + Q_pk.l2_F1s[i].transpose()) * t4
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#Q1_Q1T_T4 = Q1_Q1T * t4
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Q2_T3 = Q_pk.l2_F2s[i]*T_sk.t3
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F_sk.l2_F3s[i] = Q1_Q1T_T4 + Q2_T3 + Q_pk.l2_F3s[i]
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F_sk.l2_F6s[i] = t1_tr * ( Q1_Q1T_T4 + Q2_T3 + Q_pk.l2_F3s[i] )
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+ Q_pk.l2_F2s[i].transpose() * t4
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+ (Q_pk.l2_F5s[i] + Q_pk.l2_F5s[i].transpose())*T_sk.t3 + Q_pk.l2_F6s[i]
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*/
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memcpy( Fs->l2_F1, Qs->l2_F1, _O2_BYTE * N_TRIANGLE_TERMS(_V1) ); // F_sk.l2_F1s[i] = Q_pk.l2_F1s[i]
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// F_sk.l2_F2s[i] = Q1_T1 + Q_pk.l2_F2s[i] + Q_pk.l2_F1s[i].transpose() * T_sk.t1
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// F_sk.l2_F5s[i] = UT( t1_tr* ( Q1_T1 + Q_pk.l2_F2s[i] ) ) + Q_pk.l2_F5s[i]
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memcpy( Fs->l2_F2, Qs->l2_F2, _O2_BYTE * _V1 * _O1 );
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batch_trimat_madd( Fs->l2_F2, Qs->l2_F1, Ts->t1, _V1, _V1_BYTE, _O1, _O2_BYTE ); // Q1_T1+ Q2
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unsigned char tempQ[_O1 * _O1 * _O2_BYTE + 32];
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memset( tempQ, 0, _O1 * _O1 * _O2_BYTE );
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batch_matTr_madd( tempQ, Ts->t1, _V1, _V1_BYTE, _O1, Fs->l2_F2, _O1, _O2_BYTE ); // t1_tr*(Q1_T1+Q2)
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memcpy( Fs->l2_F5, Qs->l2_F5, _O2_BYTE * N_TRIANGLE_TERMS(_O1) ); // F5
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PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_UpperTrianglize( Fs->l2_F5, tempQ, _O1, _O2_BYTE ); // UT( ... )
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batch_trimatTr_madd( Fs->l2_F2, Qs->l2_F1, Ts->t1, _V1, _V1_BYTE, _O1, _O2_BYTE ); // F2 = Q1_T1 + Q2 + Q1^tr*t1
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// Q1_Q1T_T4 = (Q_pk.l2_F1s[i] + Q_pk.l2_F1s[i].transpose()) * t4
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// Q2_T3 = Q_pk.l2_F2s[i]*T_sk.t3
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// F_sk.l2_F3s[i] = Q1_Q1T_T4 + Q2_T3 + Q_pk.l2_F3s[i]
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memcpy( Fs->l2_F3, Qs->l2_F3, _V1 * _O2 * _O2_BYTE );
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batch_2trimat_madd( Fs->l2_F3, Qs->l2_F1, Ts->t4, _V1, _V1_BYTE, _O2, _O2_BYTE ); // Q1_Q1T_T4
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batch_mat_madd( Fs->l2_F3, Qs->l2_F2, _V1, Ts->t3, _O1, _O1_BYTE, _O2, _O2_BYTE ); // Q2_T3
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// F_sk.l2_F6s[i] = t1_tr * ( Q1_Q1T_T4 + Q2_T3 + Q_pk.l2_F3s[i] )
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// + Q_pk.l2_F2s[i].transpose() * t4
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// + (Q_pk.l2_F5s[i] + Q_pk.l2_F5s[i].transpose())*T_sk.t3 + Q_pk.l2_F6s[i]
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memcpy( Fs->l2_F6, Qs->l2_F6, _O1 * _O2 * _O2_BYTE );
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batch_matTr_madd( Fs->l2_F6, Ts->t1, _V1, _V1_BYTE, _O1, Fs->l2_F3, _O2, _O2_BYTE ); // t1_tr * ( Q1_Q1T_T4 + Q2_T3 + Q_pk.l2_F3s[i] )
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batch_2trimat_madd( Fs->l2_F6, Qs->l2_F5, Ts->t3, _O1, _O1_BYTE, _O2, _O2_BYTE ); // (Q_pk.l2_F5s[i] + Q_pk.l2_F5s[i].transpose())*T_sk.t3
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batch_bmatTr_madd( Fs->l2_F6, Qs->l2_F2, _O1, Ts->t4, _V1, _V1_BYTE, _O2, _O2_BYTE );
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}
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static
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void calculate_Q_from_F_cyclic_ref( cpk_t *Qs, const sk_t *Fs, const sk_t *Ts ) {
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// Layer 1: Computing Q5, Q3, Q6, Q9
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// Q_pk.l1_F5s[i] = UT( T1tr* (F1 * T1 + F2) )
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const unsigned char *t2 = Ts->t4;
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sk_t tempQ;
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memcpy( tempQ.l1_F2, Fs->l1_F2, _O1_BYTE * _V1 * _O1 );
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batch_trimat_madd( tempQ.l1_F2, Fs->l1_F1, Ts->t1, _V1, _V1_BYTE, _O1, _O1_BYTE ); // F1*T1 + F2
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memset( tempQ.l2_F1, 0, sizeof(tempQ.l2_F1));
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memset( tempQ.l2_F2, 0, sizeof(tempQ.l2_F2));
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batch_matTr_madd( tempQ.l2_F1, Ts->t1, _V1, _V1_BYTE, _O1, tempQ.l1_F2, _O1, _O1_BYTE ); // T1tr*(F1*T1 + F2)
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memset( Qs->l1_Q5, 0, _O1_BYTE * N_TRIANGLE_TERMS(_O1) );
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PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_UpperTrianglize( Qs->l1_Q5, tempQ.l2_F1, _O1, _O1_BYTE ); // UT( ... ) // Q5
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/*
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F1_T2 = F1 * t2
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F2_T3 = F2 * t3
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F1_F1T_T2 + F2_T3 = F1_T2 + F2_T3 + F1tr * t2
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Q_pk.l1_F3s[i] = F1_F1T_T2 + F2_T3
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Q_pk.l1_F6s[i] = T1tr* ( F1_F1T_T2 + F2_T3 ) + F2tr * t2
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Q_pk.l1_F9s[i] = UT( T2tr* ( F1_T2 + F2_T3 ) )
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*/
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memset( Qs->l1_Q3, 0, _O1_BYTE * _V1 * _O2 );
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memset( Qs->l1_Q6, 0, _O1_BYTE * _O1 * _O2 );
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memset( Qs->l1_Q9, 0, _O1_BYTE * N_TRIANGLE_TERMS(_O2) );
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batch_trimat_madd( Qs->l1_Q3, Fs->l1_F1, t2, _V1, _V1_BYTE, _O2, _O1_BYTE ); // F1*T2
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batch_mat_madd( Qs->l1_Q3, Fs->l1_F2, _V1, Ts->t3, _O1, _O1_BYTE, _O2, _O1_BYTE ); // F1_T2 + F2_T3
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memset( tempQ.l1_F2, 0, _O1_BYTE * _V1 * _O2 ); // should be F3. assuming: _O1 >= _O2
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batch_matTr_madd( tempQ.l1_F2, t2, _V1, _V1_BYTE, _O2, Qs->l1_Q3, _O2, _O1_BYTE ); // T2tr * ( F1_T2 + F2_T3 )
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PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_UpperTrianglize( Qs->l1_Q9, tempQ.l1_F2, _O2, _O1_BYTE ); // Q9
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batch_trimatTr_madd( Qs->l1_Q3, Fs->l1_F1, t2, _V1, _V1_BYTE, _O2, _O1_BYTE ); // F1_F1T_T2 + F2_T3 // Q3
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batch_bmatTr_madd( Qs->l1_Q6, Fs->l1_F2, _O1, t2, _V1, _V1_BYTE, _O2, _O1_BYTE ); // F2tr*T2
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batch_matTr_madd( Qs->l1_Q6, Ts->t1, _V1, _V1_BYTE, _O1, Qs->l1_Q3, _O2, _O1_BYTE ); // Q6
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/*
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Layer 2
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Computing Q9:
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F1_T2 = F1 * t2
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F2_T3 = F2 * t3
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Q9 = UT( T2tr*( F1*T2 + F2*T3 + F3 ) + T3tr*( F5*T3 + F6 ) )
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*/
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sk_t tempQ2;
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memcpy( tempQ2.l2_F3, Fs->l2_F3, _O2_BYTE * _V1 * _O2 ); /// F3 actually.
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batch_trimat_madd( tempQ2.l2_F3, Fs->l2_F1, t2, _V1, _V1_BYTE, _O2, _O2_BYTE ); // F1*T2 + F3
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batch_mat_madd( tempQ2.l2_F3, Fs->l2_F2, _V1, Ts->t3, _O1, _O1_BYTE, _O2, _O2_BYTE ); // F1_T2 + F2_T3 + F3
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memset( tempQ.l2_F3, 0, _O2_BYTE * _V1 * _O2 );
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batch_matTr_madd( tempQ.l2_F3, t2, _V1, _V1_BYTE, _O2, tempQ2.l2_F3, _O2, _O2_BYTE ); // T2tr * ( ..... )
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memcpy( tempQ.l2_F6, Fs->l2_F6, _O2_BYTE * _O1 * _O2 );
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batch_trimat_madd( tempQ.l2_F6, Fs->l2_F5, Ts->t3, _O1, _O1_BYTE, _O2, _O2_BYTE ); // F5*T3 + F6
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batch_matTr_madd( tempQ.l2_F3, Ts->t3, _O1, _O1_BYTE, _O2, tempQ.l2_F6, _O2, _O2_BYTE ); // T2tr*( ..... ) + T3tr*( ..... )
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memset( Qs->l2_Q9, 0, _O2_BYTE * N_TRIANGLE_TERMS(_O2) );
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PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_UpperTrianglize( Qs->l2_Q9, tempQ.l2_F3, _O2, _O2_BYTE ); // Q9
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}
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// Choosing implementations depends on the macros: _BLAS_SSE_ and _BLAS_AVX2_
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#define calculate_F_from_Q_impl calculate_F_from_Q_ref
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#define calculate_Q_from_F_cyclic_impl calculate_Q_from_F_cyclic_ref
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void PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_calculate_F_from_Q( sk_t *Fs, const sk_t *Qs, sk_t *Ts ) {
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calculate_F_from_Q_impl( Fs, Qs, Ts );
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}
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void PQCLEAN_RAINBOWVCCYCLICCOMPRESSED_CLEAN_calculate_Q_from_F_cyclic( cpk_t *Qs, const sk_t *Fs, const sk_t *Ts ) {
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calculate_Q_from_F_cyclic_impl( Qs, Fs, Ts );
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}
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