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pqcrypto/crypto_sign/rainbowIIIc-cyclic/clean/rainbow_keypair_computation.c
Matthias J. Kannwischer 5788e00a1c resolve remaining todos
2019-07-16 15:56:02 -04:00

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