Mercurial > dropbear
view libtommath/bn_mp_pack_count.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_PACK_COUNT_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ size_t mp_pack_count(const mp_int *a, size_t nails, size_t size) { size_t bits = (size_t)mp_count_bits(a); return ((bits / ((size * 8u) - nails)) + (((bits % ((size * 8u) - nails)) != 0u) ? 1u : 0u)); } #endif