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Hardcode numwords in vli_cpm_unsafe

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This commit is contained in:
Manuel Pégourié-Gonnard 2019-11-04 14:31:35 +01:00
parent cbbb0f034b
commit a752191191
3 changed files with 15 additions and 17 deletions
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8
tinycrypt/ecc_dsa.c
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@ -102,7 +102,7 @@ static void bits2int(uECC_word_t *native, const uint8_t *bits,
}
/* Reduce mod curve_n */
if (uECC_vli_cmp_unsafe(curve->n, native, num_n_words) != 1) {
if (uECC_vli_cmp_unsafe(curve->n, native) != 1) {
uECC_vli_sub(native, native, curve->n, num_n_words);
}
}
@ -236,8 +236,8 @@ int uECC_verify(const uint8_t *public_key, const uint8_t *message_hash,
}
/* r, s must be < n. */
if (uECC_vli_cmp_unsafe(curve->n, r, num_n_words) != 1 ||
uECC_vli_cmp_unsafe(curve->n, s, num_n_words) != 1) {
if (uECC_vli_cmp_unsafe(curve->n, r) != 1 ||
uECC_vli_cmp_unsafe(curve->n, s) != 1) {
return 0;
}
@ -293,7 +293,7 @@ int uECC_verify(const uint8_t *public_key, const uint8_t *message_hash,
apply_z(rx, ry, z);
/* v = x1 (mod n) */
if (uECC_vli_cmp_unsafe(curve->n, rx, num_n_words) != 1) {
if (uECC_vli_cmp_unsafe(curve->n, rx) != 1) {
uECC_vli_sub(rx, rx, curve->n, num_n_words);
}