Mercurial > dropbear
view libtommath/bn_mp_addmod.c @ 1705:5b701bf529aa
Fix ChaCha20 on 32-bit platforms (#99)
* Fix ChaCha20 on 32-bit platforms
On 32-bit platforms with old compiler STORE64H() parameter is
not auto-expanded to 64-bit value, causing wrong IV data.
Spotted on BCM4706 MIPS32r2 with GCC 4.2.4:
Exit before auth: Integrity error (bad packet size 2065808956)
* Fix Chacha20-Poly1305 and AES-GCM debug messages
Functions were renamed earlier and trace messages - not.
author | Vladislav Grishenko <themiron@users.noreply.github.com> |
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date | Fri, 29 May 2020 18:26:22 +0500 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_ADDMOD_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* d = a + b (mod c) */ mp_err mp_addmod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d) { mp_err err; mp_int t; if ((err = mp_init(&t)) != MP_OKAY) { return err; } if ((err = mp_add(a, b, &t)) != MP_OKAY) { goto LBL_ERR; } err = mp_mod(&t, c, d); LBL_ERR: mp_clear(&t); return err; } #endif