NCryptoki

I have a temporary key generated starting from some keys in the <span data-scayt_word="hsm" data-scaytid="2">hsm.

This temp key is now a byte array. How can I use for encrypt/decrypt?

For example:

session.EncryptInit(Mechanism.DES_ECB, <span data-scayt_word="KL" data-scaytid="4">KL);

needs a Key object for "<span data-scayt_word="KL" data-scaytid="8">KL". How can I use my byte array to create a Key object without storing it? Is it (or other <span data-scayt_word="workarouds" data-scaytid="24">workarouds) possible? How?