Mercurial > dropbear
view libtommath/bn_s_mp_prime_is_divisible.c @ 1815:5015c80808c5
Use MAX_HOST_LEN for TCP forwarding requests (#121)
tcpip-forward request can include hostname, which is later resolved by getaddrinfo() call.
Dropbear incorrectly assumes tcpip-forward includes only IP(v4) address. Fix this.
author | ValdikSS <iam@valdikss.org.ru> |
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date | Thu, 18 Mar 2021 16:16:17 +0300 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_S_MP_PRIME_IS_DIVISIBLE_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* determines if an integers is divisible by one * of the first PRIME_SIZE primes or not * * sets result to 0 if not, 1 if yes */ mp_err s_mp_prime_is_divisible(const mp_int *a, mp_bool *result) { int ix; mp_err err; mp_digit res; /* default to not */ *result = MP_NO; for (ix = 0; ix < PRIVATE_MP_PRIME_TAB_SIZE; ix++) { /* what is a mod LBL_prime_tab[ix] */ if ((err = mp_mod_d(a, s_mp_prime_tab[ix], &res)) != MP_OKAY) { return err; } /* is the residue zero? */ if (res == 0u) { *result = MP_YES; return MP_OKAY; } } return MP_OKAY; } #endif