+We need
+
+* bn_mul_comba8
+* bn_mul_comba4
+* bn_mul_normal
+* bn_mul_recursive
+
+* bn_sqr_comba8
+* bn_sqr_comba4
+bn_sqr_normal -> BN_sqr
+* bn_sqr_recursive
+
+* bn_mul_low_recursive
+* bn_mul_low_normal
+* bn_mul_high
+
+* bn_mul_part_recursive # symetric but not power of 2
+
+bn_mul_asymetric_recursive # uneven, but do the chop up.