-static void alg_x25519(keyopts *k)
-{
- key_data *kd, *kkd;
- octet priv[X25519_KEYSZ], pub[X25519_PUBSZ];
-
- copyparam(k, 0);
- k->r->ops->fill(k->r, priv, sizeof(priv));
- x25519(pub, priv, x25519_base);
- kkd = key_newstruct();
- key_structsteal(kkd, "priv",
- key_newbinary(KCAT_PRIV | KF_BURN, priv, sizeof(priv)));
- kd = key_newstruct();
- key_structsteal(kd, "private", kkd);
- key_structsteal(kd, "pub", key_newbinary(KCAT_PUB, pub, sizeof(pub)));
-
- key_setkeydata(k->kf, k->k, kd);
-}
-
-static void alg_x448(keyopts *k)
-{
- key_data *kd, *kkd;
- octet priv[X448_KEYSZ], pub[X448_PUBSZ];
-
- copyparam(k, 0);
- k->r->ops->fill(k->r, priv, sizeof(priv));
- x448(pub, priv, x448_base);
- kkd = key_newstruct();
- key_structsteal(kkd, "priv",
- key_newbinary(KCAT_PRIV | KF_BURN, priv, sizeof(priv)));
- kd = key_newstruct();
- key_structsteal(kd, "private", kkd);
- key_structsteal(kd, "pub", key_newbinary(KCAT_PUB, pub, sizeof(pub)));
-
- key_setkeydata(k->kf, k->k, kd);
-}
-
-static void alg_ed25519(keyopts *k)
-{
- key_data *kd, *kkd;
- octet priv[ED25519_KEYSZ], pub[ED25519_PUBSZ];
+#define XDHS(_) \
+ _(x25519, X25519, "X25519") \
+ _(x448, X448, "X448")
+
+#define XDHALG(xdh, XDH, name) \
+ \
+ static void alg_##xdh(keyopts *k) \
+ { \
+ key_data *kd, *kkd; \
+ octet priv[XDH##_KEYSZ], pub[XDH##_PUBSZ]; \
+ \
+ copyparam(k, 0); \
+ k->r->ops->fill(k->r, priv, sizeof(priv)); \
+ xdh(pub, priv, xdh##_base); \
+ kkd = key_newstruct(); \
+ key_structsteal(kkd, "priv", \
+ key_newbinary(KCAT_PRIV | KF_BURN, \
+ priv, sizeof(priv))); \
+ kd = key_newstruct(); \
+ key_structsteal(kd, "private", kkd); \
+ key_structsteal(kd, "pub", \
+ key_newbinary(KCAT_PUB, pub, sizeof(pub))); \
+ \
+ key_setkeydata(k->kf, k->k, kd); \
+ }