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Merge pull request #3733 from SparkiDev/sp_int_mont_red_size

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SP int: mont_red - check size of a relative to m
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toddouska
2021-02-09 16:00:24 -08:00
committed by GitHub
parent ae3706d5e5 aefddaf2b8
commit 27475291b1
1 changed files with 3 additions and 0 deletions
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3
wolfcrypt/src/sp_int.c
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@@ -12369,6 +12369,9 @@ int sp_mont_red(sp_int* a, sp_int* m, sp_int_digit mp)
if ((a == NULL) || (m == NULL) || sp_iszero(m)) { if ((a == NULL) || (m == NULL) || sp_iszero(m)) {
err = MP_VAL; err = MP_VAL;
} }
else if (a->size < m->used * 2 + 1) {
err = MP_VAL;
}
else { else {
err = _sp_mont_red(a, m, mp); err = _sp_mont_red(a, m, mp);
} }