crypto_core
crypto_core(block, nonce, key, crypto_core_constant32);
crypto_core(output, nonce, prng->state, crypto_core_constant32);
crypto_core(block, nonce8, seed, crypto_core_constant32);
crypto_core(p32, nonce8, seed, crypto_core_constant32);
crypto_core(block, nonce8, seed, crypto_core_constant32);