diff options
| author | Matt Johnston <matt@ucc.asn.au> | 2017-06-14 23:31:42 +0800 |
|---|---|---|
| committer | Matt Johnston <matt@ucc.asn.au> | 2017-06-14 23:31:42 +0800 |
| commit | 88ce30beb62716b000289d255deca50006880633 (patch) | |
| tree | a15e89f770e72a4eef240e776082018ce5579594 /libtommath | |
| parent | 723ec19eedd2618cd850e703519fd8432c67e44c (diff) | |
| parent | d260d5148e2eec62e7af8d6ec86dae438e4a0ec9 (diff) | |
merge from main
--HG--
branch : fuzz
Diffstat (limited to 'libtommath')
| -rw-r--r-- | libtommath/bn_mp_exteuclid.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/libtommath/bn_mp_exteuclid.c b/libtommath/bn_mp_exteuclid.c index 25ccba9..f4f1c7b 100644 --- a/libtommath/bn_mp_exteuclid.c +++ b/libtommath/bn_mp_exteuclid.c @@ -29,34 +29,34 @@ int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3) /* initialize, (u1,u2,u3) = (1,0,a) */ mp_set(&u1, 1); - if ((err = mp_copy(a, &u3)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(a, &u3)) != MP_OKAY) { goto LBL_ERR; } /* initialize, (v1,v2,v3) = (0,1,b) */ mp_set(&v2, 1); - if ((err = mp_copy(b, &v3)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(b, &v3)) != MP_OKAY) { goto LBL_ERR; } /* loop while v3 != 0 */ while (mp_iszero(&v3) == MP_NO) { /* q = u3/v3 */ - if ((err = mp_div(&u3, &v3, &q, NULL)) != MP_OKAY) { goto _ERR; } + if ((err = mp_div(&u3, &v3, &q, NULL)) != MP_OKAY) { goto LBL_ERR; } /* (t1,t2,t3) = (u1,u2,u3) - (v1,v2,v3)q */ - if ((err = mp_mul(&v1, &q, &tmp)) != MP_OKAY) { goto _ERR; } - if ((err = mp_sub(&u1, &tmp, &t1)) != MP_OKAY) { goto _ERR; } - if ((err = mp_mul(&v2, &q, &tmp)) != MP_OKAY) { goto _ERR; } - if ((err = mp_sub(&u2, &tmp, &t2)) != MP_OKAY) { goto _ERR; } - if ((err = mp_mul(&v3, &q, &tmp)) != MP_OKAY) { goto _ERR; } - if ((err = mp_sub(&u3, &tmp, &t3)) != MP_OKAY) { goto _ERR; } + if ((err = mp_mul(&v1, &q, &tmp)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_sub(&u1, &tmp, &t1)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_mul(&v2, &q, &tmp)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_sub(&u2, &tmp, &t2)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_mul(&v3, &q, &tmp)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_sub(&u3, &tmp, &t3)) != MP_OKAY) { goto LBL_ERR; } /* (u1,u2,u3) = (v1,v2,v3) */ - if ((err = mp_copy(&v1, &u1)) != MP_OKAY) { goto _ERR; } - if ((err = mp_copy(&v2, &u2)) != MP_OKAY) { goto _ERR; } - if ((err = mp_copy(&v3, &u3)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&v1, &u1)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_copy(&v2, &u2)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_copy(&v3, &u3)) != MP_OKAY) { goto LBL_ERR; } /* (v1,v2,v3) = (t1,t2,t3) */ - if ((err = mp_copy(&t1, &v1)) != MP_OKAY) { goto _ERR; } - if ((err = mp_copy(&t2, &v2)) != MP_OKAY) { goto _ERR; } - if ((err = mp_copy(&t3, &v3)) != MP_OKAY) { goto _ERR; } + if ((err = mp_copy(&t1, &v1)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_copy(&t2, &v2)) != MP_OKAY) { goto LBL_ERR; } + if ((err = mp_copy(&t3, &v3)) != MP_OKAY) { goto LBL_ERR; } } /* make sure U3 >= 0 */ @@ -72,7 +72,8 @@ int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3) if (U3 != NULL) { mp_exch(U3, &u3); } err = MP_OKAY; -_ERR: mp_clear_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL); +LBL_ERR: + mp_clear_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL); return err; } #endif |