Mercurial > dropbear
view libtommath/bn_mp_fwrite.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_FWRITE_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ #ifndef MP_NO_FILE mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream) { char *buf; mp_err err; int len; size_t written; /* TODO: this function is not in this PR */ if (MP_HAS(MP_RADIX_SIZE_OVERESTIMATE)) { /* if ((err = mp_radix_size_overestimate(&t, base, &len)) != MP_OKAY) goto LBL_ERR; */ } else { if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) { return err; } } buf = (char *) MP_MALLOC((size_t)len); if (buf == NULL) { return MP_MEM; } if ((err = mp_to_radix(a, buf, (size_t)len, &written, radix)) != MP_OKAY) { goto LBL_ERR; } if (fwrite(buf, written, 1uL, stream) != 1uL) { err = MP_ERR; goto LBL_ERR; } err = MP_OKAY; LBL_ERR: MP_FREE_BUFFER(buf, (size_t)len); return err; } #endif #endif