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when to use RSA and when DES

843810Dec 7 2002 — edited Dec 7 2004

Let's say we want to encrypt a message.
Is it possible that some property of the message might get you to use RSA over DES or vice versa?
I am not talking about to the fact that RSA (being private/public encryption) will take up more time to encrypt/decrypt, but some kind of property of the message itself that might make you decide one over the other?

The thing is I am developing a security service architecture in which the user can decide which one he wants to encrypt; if he doesn't choose either the service itself will choose; to do it good I need to know about the above.
I guess though the answer is no?
Any opinions or examples where the answer would be yes?
Thanks

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Locked on Jan 4 2005

Added on Dec 7 2002

#cryptography

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