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SP math neg: Mont Reduce fix

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Compare the absolute value for negatives.
This commit is contained in:
Sean Parkinson
2022-01-18 16:17:27 +10:00
parent e11d484746
commit 53a4903e2f
1 changed files with 2 additions and 2 deletions
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4
wolfcrypt/src/sp_int.c
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@@ -12171,7 +12171,7 @@ static int _sp_mont_red(sp_int* a, sp_int* m, sp_int_digit mp)
sp_clamp(a);
sp_rshb(a, bits, a);
if (_sp_cmp(a, m) != MP_LT) {
if (_sp_cmp_abs(a, m) != MP_LT) {
_sp_sub_off(a, m, a, 0);
}
@@ -12370,7 +12370,7 @@ static int _sp_mont_red(sp_int* a, sp_int* m, sp_int_digit mp)
sp_clamp(a);
sp_rshb(a, bits, a);
if (_sp_cmp(a, m) != MP_LT) {
if (_sp_cmp_abs(a, m) != MP_LT) {
sp_sub(a, m, a);
}