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"Symmetric encryption means the same key is used to encrypt and decrypt your data; this is less secure than asymmetric encryption" Wat? If this is true, why d
by jiggy2011 14y ago
"Symmetric encryption means the same key is used to encrypt and decrypt your data; this is less secure than asymmetric encryption"
Wat?
If this is true, why does an RSA key have to be significantly longer than an AES key?
In fact in most implementations asymmetric crypto is not used for exchanging or storing data. It's used to exchange a key that can be used for symmetric crypto.
- thirsteh 14y agoIt's not true. And yes, for equivalent bits of security, you need much larger keys with the RSA algorithm. The main reason it's not used for much beyond key-exchange is that it's thus exponentially slower.