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Also fix problem in FrodoKEM-SHAKE

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Thom Wiggers 2020-11-17 12:28:12 +01:00 committed by Kris Kwiatkowski
parent 747908d35b
commit 9a1319454f
4 changed files with 4 additions and 4 deletions
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2
crypto_kem/frodokem1344shake/opt/matrix_shake.c
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@ -96,7 +96,7 @@ int PQCLEAN_FRODOKEM1344SHAKE_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
uint16_t sp = s[i * PARAMS_N + kk + j]; uint16_t sp = s[i * PARAMS_N + kk + j];
for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication
sum[k] += sp * a_cols[(t + j) * PARAMS_N + k]; sum[k] += (uint16_t)(sp * (uint32_t)a_cols[(t + j) * PARAMS_N + k]);
} }
} }
for (k = 0; k < PARAMS_N; k++) { for (k = 0; k < PARAMS_N; k++) {

2
crypto_kem/frodokem640aes/opt/matrix_aes.c
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@ -80,7 +80,7 @@ int PQCLEAN_FRODOKEM640AES_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t *
*((uint32_t *)&out[i]) = *((uint32_t *)&e[i]); *((uint32_t *)&out[i]) = *((uint32_t *)&e[i]);
} }
size_t k; int k;
uint16_t a_cols[PARAMS_N * PARAMS_STRIPE_STEP] = {0}; uint16_t a_cols[PARAMS_N * PARAMS_STRIPE_STEP] = {0};
uint16_t a_cols_t[PARAMS_N * PARAMS_STRIPE_STEP]; uint16_t a_cols_t[PARAMS_N * PARAMS_STRIPE_STEP];
uint16_t a_cols_temp[PARAMS_N * PARAMS_STRIPE_STEP] = {0}; uint16_t a_cols_temp[PARAMS_N * PARAMS_STRIPE_STEP] = {0};

2
crypto_kem/frodokem640shake/opt/matrix_shake.c
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@ -96,7 +96,7 @@ int PQCLEAN_FRODOKEM640SHAKE_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
uint16_t sp = s[i * PARAMS_N + kk + j]; uint16_t sp = s[i * PARAMS_N + kk + j];
for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication
sum[k] += sp * a_cols[(t + j) * PARAMS_N + k]; sum[k] += (uint16_t)(sp * (uint32_t)a_cols[(t + j) * PARAMS_N + k]);
} }
} }
for (k = 0; k < PARAMS_N; k++) { for (k = 0; k < PARAMS_N; k++) {

2
crypto_kem/frodokem976shake/opt/matrix_shake.c
View File

@ -96,7 +96,7 @@ int PQCLEAN_FRODOKEM976SHAKE_OPT_mul_add_sa_plus_e(uint16_t *out, const uint16_t
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
uint16_t sp = s[i * PARAMS_N + kk + j]; uint16_t sp = s[i * PARAMS_N + kk + j];
for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication for (k = 0; k < PARAMS_N; k++) { // Matrix-vector multiplication
sum[k] += sp * a_cols[(t + j) * PARAMS_N + k]; sum[k] += (uint16_t)(sp * (uint32_t)a_cols[(t + j) * PARAMS_N + k]);
} }
} }
for (k = 0; k < PARAMS_N; k++) { for (k = 0; k < PARAMS_N; k++) {