wolfSSL/wolfssl
1
0
Fork 1
mirror of https://github.com/wolfSSL/wolfssl.git synced 2025-07-29 18:27:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #7032 from SparkiDev/sp_int_neg_mont_red

Browse Source 
SP int neg sp_mont_red_ex: disallow negative numbers
This commit is contained in:
JacobBarthelmeh
2023-12-06 15:04:46 -07:00
committed by GitHub
parent 2c9208b0c6 cf8a6efaa5
commit 0ffb586030
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
wolfcrypt/src/sp_int.c
View File

@ -17524,6 +17524,11 @@ int sp_mont_red_ex(sp_int* a, const sp_int* m, sp_int_digit mp, int ct)
if ((a == NULL) || (m == NULL) || sp_iszero(m)) {
err = MP_VAL;
}
#ifdef WOLFSSL_SP_INT_NEGATIVE
else if ((a->sign == MP_NEG) || (m->sign == MP_NEG)) {
err = MP_VAL;
}
#endif
/* Ensure a has enough space for calculation. */
else if (a->size < m->used * 2 + 1) {
err = MP_VAL;