Re: make one symmetric key of two symmetric keys

"Ulf Reiman" <ulf.reiman@xxxxxxxxx> wrote in message
news:1140684455.612635.229240@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
What is the right way to make one symmetric key of two symmetric keys.
Can i use hash functions of the two keys to build one key or shall use
XOR. I can not enrypt the data with first the key1 and then that packer
with key2, as encrypt Key1[ Key2[data]]. Regards Ulf Reiman

I'm not sure of what you're asking.
If what you talk about session keys, they're not derived from the
asymetrical ones.
You randomly make a session key of the size you want. Then you encrypt
this key with the public key of your partner, his the only one that
have the correspondig private key than can decript the message to get
the session key.

Though, your securely passed the session key to your contact.




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