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| author | wolfbeast <mcwerewolf@gmail.com> | 2018-02-06 11:46:26 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@gmail.com> | 2018-02-06 11:46:26 +0100 |
| commit | 0d5461ff40eef2b711a720674f6b48f206df73e2 (patch) | |
| tree | c6033924a0de9be1ab140596e305898c651bf57e /security/nss/lib/freebl/ecl/ecp_jm.c | |
| parent | ef71c3358c6ac8463740d07ba82a9f11f869da8a (diff) | |
| download | uxp-0d5461ff40eef2b711a720674f6b48f206df73e2.tar.gz | |
Update NSS to 3.32.1-RTM
Diffstat (limited to 'security/nss/lib/freebl/ecl/ecp_jm.c')
| -rw-r--r-- | security/nss/lib/freebl/ecl/ecp_jm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/ecl/ecp_jm.c b/security/nss/lib/freebl/ecl/ecp_jm.c index a1106cea83..bd13fa0508 100644 --- a/security/nss/lib/freebl/ecl/ecp_jm.c +++ b/security/nss/lib/freebl/ecl/ecp_jm.c @@ -127,6 +127,17 @@ ec_GFp_pt_add_jm_aff(const mp_int *px, const mp_int *py, const mp_int *pz, MP_CHECKOK(group->meth->field_mul(A, qx, A, group->meth)); MP_CHECKOK(group->meth->field_mul(B, qy, B, group->meth)); + /* Check P == Q */ + if (mp_cmp(A, px) == 0) { + if (mp_cmp(B, py) == 0) { + /* If Px == Qx && Py == Qy, double P. */ + return ec_GFp_pt_dbl_jm(px, py, pz, paz4, rx, ry, rz, raz4, + scratch, group); + } + /* If Px == Qx && Py != Qy, return point at infinity. */ + return ec_GFp_pt_set_inf_jac(rx, ry, rz); + } + /* C = A - px, D = B - py */ MP_CHECKOK(group->meth->field_sub(A, px, C, group->meth)); MP_CHECKOK(group->meth->field_sub(B, py, D, group->meth)); |