If somebody observes a connention between client, and the server, then he can se
ID: 657763 • Letter: I
Question
If somebody observes a connention between client, and the server, then he can see the keys, by the following data encrypted is.
As far as I know, if I connect to a server, then it sends me some keys, and later the communication will be encoded by this key. But I dont understand, how is it possible, to make it secure from the beginning? When the client and the server initialize the connection, and choose an encryption method, then the observer can get the security keys.
How can a connection be secure, if somebody observes it from the beginning?
Explanation / Answer
A connection can be secure using asymmetric cryptography, even if somebody observes it from the beginning.
Why?
Asymmetric cryptography is a class of cryptographic algorithms which requires two separate keys, one of which is secret and one of which is public.
The public key is used to encrypt plaintext or to verify a digital signature; whereas the private key is used to decrypt ciphertext or to create a digital signature. The term "asymmetric" stems from the use of different keys to perform these opposite functions, each the inverse of the other
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