crypto/ecc/ec2_aff.c

109 		MP_CHECKOK(group->meth->field_add(py, qy, &tempy, group->meth));
110 		MP_CHECKOK(group->meth->field_add(px, qx, &tempx, group->meth));
111 		MP_CHECKOK(group->meth->
112 				   field_div(&tempy, &tempx, &lambda, group->meth));
113 		MP_CHECKOK(group->meth->field_sqr(&lambda, &tempx, group->meth));
114 		MP_CHECKOK(group->meth->
115 				   field_add(&tempx, &lambda, &tempx, group->meth));
116 		MP_CHECKOK(group->meth->
117 				   field_add(&tempx, &group->curvea, &tempx, group->meth));
118 		MP_CHECKOK(group->meth->
119 				   field_add(&tempx, px, &tempx, group->meth));
120 		MP_CHECKOK(group->meth->
121 				   field_add(&tempx, qx, &tempx, group->meth));
131 		MP_CHECKOK(group->meth->field_div(qy, qx, &lambda, group->meth));
132 		MP_CHECKOK(group->meth->
133 				   field_add(&lambda, qx, &lambda, group->meth));
135 		MP_CHECKOK(group->meth->field_sqr(&lambda, &tempx, group->meth));
136 		MP_CHECKOK(group->meth->
137 				   field_add(&tempx, &lambda, &tempx, group->meth));
138 		MP_CHECKOK(group->meth->
139 				   field_add(&tempx, &group->curvea, &tempx, group->meth));
142 	MP_CHECKOK(group->meth->field_add(qx, &tempx, &tempy, group->meth));
143 	MP_CHECKOK(group->meth->
144 			   field_mul(&tempy, &lambda, &tempy, group->meth));
145 	MP_CHECKOK(group->meth->
146 			   field_add(&tempy, &tempx, &tempy, group->meth));
147 	MP_CHECKOK(group->meth->field_add(&tempy, qy, ry, group->meth));
171 	MP_CHECKOK(group->meth->field_add(qx, qy, &nqy, group->meth));
225 		MP_CHECKOK(group->meth->field_add(&qx, &qy, &qy, group->meth));
309 	if ((MP_SIGN(px) == MP_NEG) || (mp_cmp(px, &group->meth->irr) >= 0) ||
310 		(MP_SIGN(py) == MP_NEG) || (mp_cmp(py, &group->meth->irr) >= 0)) {
315 	if (group->meth->field_enc) {
316 		group->meth->field_enc(px, &pxt, group->meth);
317 		group->meth->field_enc(py, &pyt, group->meth);
323 	MP_CHECKOK( group->meth->field_sqr(&pyt, &accl, group->meth) );
324 	MP_CHECKOK( group->meth->field_mul(&pxt, &pyt, &tmp, group->meth) );
325 	MP_CHECKOK( group->meth->field_add(&accl, &tmp, &accl, group->meth) );
327 	MP_CHECKOK( group->meth->field_sqr(&pxt, &tmp, group->meth) );
328 	MP_CHECKOK( group->meth->field_mul(&pxt, &tmp, &accr, group->meth) );
329 	MP_CHECKOK( group->meth->field_mul(&group->curvea, &tmp, &tmp, group->meth) );
330 	MP_CHECKOK( group->meth->field_add(&tmp, &accr, &accr, group->meth) );
331 	MP_CHECKOK( group->meth->field_add(&accr, &group->curveb, &accr, group->meth) );
333 	MP_CHECKOK( group->meth->field_add(&accl, &accr, &accr, group->meth) );