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seen Mar 10 '13 at 8:44

Mar
9
comment Is this method for exchanging private key using RSA sound?
But to change the secret keys I have to change the public keys as well, right ? If so then I guess I am better to go with RSA, because I want the public keys to be as some sort of global identifiers for the connecting parties and remain unchanged so the parties could find each other again only using the public keys, yet to use diff symmetric keys per session. Makes sense ? tbh I never implemented a crypto system before, thats why I want to make everything using ready-made libraries w/ very minimal coding from my part.
Mar
9
comment Is this method for exchanging private key using RSA sound?
Thank you so much for your time. to be honest I am not sure how to go about implementing DH, the one link I found was about C# ECDiffieHellman msdn does not indicate that the key would be different for each session. It just showed each user using the public key of the other one to generate the shared key, and thus I assumed it would have to be unique. Do you see where/if there is randomness in ECDiffieHellman ? Or if there is a better DH library for C# ?
Mar
9
comment Is this method for exchanging private key using RSA sound?
Thank you so much for replying. Can you please elaborate a little bit ? I thought only Bob will know Alice's part of the key, and only Alice will know Bob's half ? An eavesdropper would have to know Bob/Alice private keys to be able to decrypt the transmitted portions of the symmteric key ? ie: Eve must know Alice's private key to know the half of the symmetric key Bob transmitted to Alice using her public key ?