P256r1 returns a Curve which implements Brainpool P256r1 (see RFC 5639, section 3.4).

P256t1 returns a Curve which implements Brainpool P256t1 (see RFC 5639, section 3.4).

P384r1 returns a Curve which implements Brainpool P384r1 (see RFC 5639, section 3.6).

P384t1 returns a Curve which implements Brainpool P384t1 (see RFC 5639, section 3.6).

P512r1 returns a Curve which implements Brainpool P512r1 (see RFC 5639, section 3.7).

P512t1 returns a Curve which implements Brainpool P512t1 (see RFC 5639, section 3.7).