pub unsafe extern "C" fn nettle_rsa_sha512_verify_digest(
key: *const rsa_public_key,
digest: *const u8,
signature: *const __mpz_struct,
) -> c_int
pub unsafe extern "C" fn nettle_rsa_sha512_verify_digest(
key: *const rsa_public_key,
digest: *const u8,
signature: *const __mpz_struct,
) -> c_int