SLH_DSA_PUB
ret->pub = SLH_DSA_PUB(ret);
key->pub = SLH_DSA_PUB(key);
p = SLH_DSA_PUB(key);
uint8_t *pub = SLH_DSA_PUB(out);
key->pub = SLH_DSA_PUB(key);
key->pub = SLH_DSA_PUB(key);