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| author | jan.nijtmans <nijtmans@users.sourceforge.net> | 2018-03-01 20:43:31 (GMT) |
|---|---|---|
| committer | jan.nijtmans <nijtmans@users.sourceforge.net> | 2018-03-01 20:43:31 (GMT) |
| commit | 5753c7a42b638962406f9f7f822e48561e7a6253 (patch) | |
| tree | 65742203dd83d002e9c923ddf96ddf45460e0d05 /libtommath/bn_mp_invmod.c | |
| parent | 6881a1a27437cae50d56f12227e9cfe10c7a49f2 (diff) | |
| download | tcl-5753c7a42b638962406f9f7f822e48561e7a6253.zip tcl-5753c7a42b638962406f9f7f822e48561e7a6253.tar.gz tcl-5753c7a42b638962406f9f7f822e48561e7a6253.tar.bz2 | |
Lots of code cleanup, mainly [https://github.com/libtom/libtommath/pull/102|Pull request #102]
Diffstat (limited to 'libtommath/bn_mp_invmod.c')
| -rw-r--r-- | libtommath/bn_mp_invmod.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libtommath/bn_mp_invmod.c b/libtommath/bn_mp_invmod.c index 525493a..96717ea 100644 --- a/libtommath/bn_mp_invmod.c +++ b/libtommath/bn_mp_invmod.c @@ -18,14 +18,14 @@ /* hac 14.61, pp608 */ int mp_invmod(const mp_int *a, const mp_int *b, mp_int *c) { - /* b cannot be negative */ - if ((b->sign == MP_NEG) || (mp_iszero(b) == MP_YES)) { + /* b cannot be negative and has to be >1 */ + if ((b->sign == MP_NEG) || (mp_cmp_d(b, 1uL) != MP_GT)) { return MP_VAL; } #ifdef BN_FAST_MP_INVMOD_C /* if the modulus is odd we can use a faster routine instead */ - if ((mp_isodd(b) == MP_YES) && (mp_cmp_d(b, 1) != MP_EQ)) { + if ((mp_isodd(b) == MP_YES)) { return fast_mp_invmod(a, b, c); } #endif |