Mercurial > dropbear
view libtommath/bn_mp_invmod.c @ 1829:a7cc3332d8ab
Replace ChanType.sepfds with Channel.bidir_fd
This handles the case where a svrchansess has separate FDs
for nopty, but a single FD for pty mode.
The use of sepfds was also previously incorrect for X11 and
agent forwarding
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Mon, 11 Oct 2021 15:42:14 +0800 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_INVMOD_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* hac 14.61, pp608 */ mp_err mp_invmod(const mp_int *a, const mp_int *b, mp_int *c) { /* b cannot be negative and has to be >1 */ if ((b->sign == MP_NEG) || (mp_cmp_d(b, 1uL) != MP_GT)) { return MP_VAL; } /* if the modulus is odd we can use a faster routine instead */ if (MP_HAS(S_MP_INVMOD_FAST) && MP_IS_ODD(b)) { return s_mp_invmod_fast(a, b, c); } return MP_HAS(S_MP_INVMOD_SLOW) ? s_mp_invmod_slow(a, b, c) : MP_VAL; } #endif