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author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2016-11-18 09:50:37 (GMT) |
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committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2016-11-18 09:50:37 (GMT) |
commit | c85162575b2a6ba6d8b7103a103d8724c2d51e03 (patch) | |
tree | c945d6b5352f04dfb8dcda9435522ae38bf25c51 /libtommath/bn_mp_expt_d.c | |
parent | e0c2fc16a8641c16944de458557edf2d315d688b (diff) | |
parent | 44774dc3238ca1e269c6acedcbdfb449780c96f9 (diff) | |
download | tcl-c85162575b2a6ba6d8b7103a103d8724c2d51e03.zip tcl-c85162575b2a6ba6d8b7103a103d8724c2d51e03.tar.gz tcl-c85162575b2a6ba6d8b7103a103d8724c2d51e03.tar.bz2 |
Fix [e6f27aa56fa51bfc1752ce768bf0d301c60bfd2c|e6f27aa56f]: Update libtommath to 1.0
Diffstat (limited to 'libtommath/bn_mp_expt_d.c')
-rw-r--r-- | libtommath/bn_mp_expt_d.c | 43 |
1 files changed, 9 insertions, 34 deletions
diff --git a/libtommath/bn_mp_expt_d.c b/libtommath/bn_mp_expt_d.c index 132f480..61c5a1d 100644 --- a/libtommath/bn_mp_expt_d.c +++ b/libtommath/bn_mp_expt_d.c @@ -1,4 +1,4 @@ -#include <tommath.h> +#include <tommath_private.h> #ifdef BN_MP_EXPT_D_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * @@ -12,42 +12,17 @@ * The library is free for all purposes without any express * guarantee it works. * - * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com + * Tom St Denis, tstdenis82@gmail.com, http://libtom.org */ -/* calculate c = a**b using a square-multiply algorithm */ +/* wrapper function for mp_expt_d_ex() */ int mp_expt_d (mp_int * a, mp_digit b, mp_int * c) { - int res, x; - mp_int g; - - if ((res = mp_init_copy (&g, a)) != MP_OKAY) { - return res; - } - - /* set initial result */ - mp_set (c, 1); - - for (x = 0; x < (int) DIGIT_BIT; x++) { - /* square */ - if ((res = mp_sqr (c, c)) != MP_OKAY) { - mp_clear (&g); - return res; - } - - /* if the bit is set multiply */ - if ((b & (mp_digit) (((mp_digit)1) << (DIGIT_BIT - 1))) != 0) { - if ((res = mp_mul (c, &g, c)) != MP_OKAY) { - mp_clear (&g); - return res; - } - } - - /* shift to next bit */ - b <<= 1; - } - - mp_clear (&g); - return MP_OKAY; + return mp_expt_d_ex(a, b, c, 0); } + #endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ |