Mercurial > dropbear
view libtommath/bn_mp_mulmod.c @ 486:d59f628e7baa
propagate from branch 'au.asn.ucc.matt.dropbear.dbclient-netcat-alike' (head b02ba6628cf2095017c60d202ac630f231e6b553)
to branch 'au.asn.ucc.matt.dropbear' (head 636506b73e973b004cc058b07e6f36a25ff902f8)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 17 Sep 2008 14:49:12 +0000 |
parents | 5ff8218bcee9 |
children | 4fbf9a7556ed |
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#include <tommath.h> #ifdef BN_MP_MULMOD_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * * LibTomMath is a library that provides multiple-precision * integer arithmetic as well as number theoretic functionality. * * The library was designed directly after the MPI library by * Michael Fromberger but has been written from scratch with * additional optimizations in place. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://math.libtomcrypt.com */ /* d = a * b (mod c) */ int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d) { int res; mp_int t; if ((res = mp_init (&t)) != MP_OKAY) { return res; } if ((res = mp_mul (a, b, &t)) != MP_OKAY) { mp_clear (&t); return res; } res = mp_mod (&t, c, d); mp_clear (&t); return res; } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_mulmod.c,v $ */ /* $Revision: 1.4 $ */ /* $Date: 2006/03/31 14:18:44 $ */