ching named curve, otherwise it returns 0 for no match, or -1 on error.</p>

<p>EC_GROUP_get0_order() returns an internal pointer to the group order. EC_GROUP_order_bits() returns the number of bits in the group order. EC_GROUP_get0_cofactor() returns an internal pointer to the group cofactor. EC_GROUP_get0_field() returns an internal pointer to the group field. For curves over GF(p), this is the modulus; for curves over GF(2^m), this is the irreducible polynomial defining the field.</p>

<p>EC_GROUP_get0_s