Lines Matching refs:x1
107 /* Compute the x-coordinate x1/z1 for the point (x1/z1)+(x2/x2) in Montgomery
113 static int gf2m_Madd(const EC_GROUP *group, const BIGNUM *x, BIGNUM *x1, BIGNUM *z1,
126 if (!group->meth->field_mul(group, x1, x1, z2, ctx)) goto err;
128 if (!group->meth->field_mul(group, t2, x1, z1, ctx)) goto err;
129 if (!BN_GF2m_add(z1, z1, x1)) goto err;
131 if (!group->meth->field_mul(group, x1, z1, t1, ctx)) goto err;
132 if (!BN_GF2m_add(x1, x1, t2)) goto err;
141 /* Compute the x, y affine coordinates from the point (x1, z1) (x2, z2)
150 static int gf2m_Mxy(const EC_GROUP *group, const BIGNUM *x, const BIGNUM *y, BIGNUM *x1,
182 if (!BN_GF2m_add(z1, z1, x1)) goto err;
184 if (!group->meth->field_mul(group, x1, z2, x1, ctx)) goto err;
196 if (!group->meth->field_mul(group, x2, x1, t3, ctx)) goto err;
218 BIGNUM *x1, *x2, *z1, *z2;
240 x1 = BN_CTX_get(ctx);
247 if (!BN_GF2m_mod_arr(x1, &point->X, group->poly)) goto err; /* x1 = x */
249 if (!group->meth->field_sqr(group, z2, x1, ctx)) goto err; /* z2 = x1^2 = x^2 */
271 if (!gf2m_Madd(group, &point->X, x1, z1, x2, z2, ctx)) goto err;
276 if (!gf2m_Madd(group, &point->X, x2, z2, x1, z1, ctx)) goto err;
277 if (!gf2m_Mdouble(group, x1, z1, ctx)) goto err;
286 i = gf2m_Mxy(group, &point->X, &point->Y, x1, z1, x2, z2, ctx);
