rust-openssl

Brainpool curves are used by European government organizations that are
suspicious of the NIST curves. Brainpool curves are very similar to NIST
curves with one critical difference: the parameters to Brainpool are
nothing-up-my-sleeve numbers [0].

The actual values of the NID constants have been taken from the OpenSSL
source code [1].

[0]: https://github.com/veorq/numsgen#seeds

[1]: https://github.com/openssl/openssl/blob/4e6647506331fc3b3ef5b23e5dbe188279ddd575/include/openssl/obj_mac.h#L4759