eddsa_pub_key_sanity_check
ret = eddsa_pub_key_sanity_check(ctx->pub_key); EG(ret, err);
ret = eddsa_pub_key_sanity_check(&(key_pair->pub_key)); EG(ret, err);
ret = eddsa_pub_key_sanity_check(pub_keys[i]); EG(ret, err);
ret = eddsa_pub_key_sanity_check(pub_keys[i]); EG(ret, err);
ret = eddsa_pub_key_sanity_check(pub_key);