feedc0de/wolfssl
1
0
Fork 0
forked from wolfSSL/wolfssl
Code Pull Requests Activity

Fix for NXP LTC ECC public key computation broken in PR #2859 for contstant time changes.

Browse Source
This commit is contained in:
David Garske
2021-04-09 15:51:30 -07:00
parent 779dabc04e
commit 070dfad07a
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
wolfcrypt/src/ecc.c
View File

@ -2879,7 +2879,7 @@ static int ecc_mulmod(const mp_int* k, ecc_point* P, ecc_point* Q,
#endif #endif
/* Convert the point to montogmery form. /* Convert the point to montgomery form.
* *
* @param [in] p Point to convert. * @param [in] p Point to convert.
* @param [out] r Point in montgomery form. * @param [out] r Point in montgomery form.
@ -4413,10 +4413,14 @@ static int ecc_make_pub_ex(ecc_key* key, ecc_curve_spec* curveIn,
err = MEMORY_E; err = MEMORY_E;
} }
} }
#ifndef FREESCALE_LTC_ECC /* this is done in hardware */
if (err == MP_OKAY) { if (err == MP_OKAY) {
/* Use constant time map if compiled in */ /* Use constant time map if compiled in */
err = ecc_map_ex(pub, curve->prime, mp, 1); err = ecc_map_ex(pub, curve->prime, mp, 1);
} }
#else
(void)mp;
#endif
wc_ecc_del_point_h(base, key->heap); wc_ecc_del_point_h(base, key->heap);
} }