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Who or what types of website or companies use symmetric key encryption?
Wiki User
∙ 14y ago
If you are using an encrypted channel, then at some point everyone uses symmetric encryption. It is fast (compared to asymmetric).
The first part of an encrypted conversation will probably use asymmetric encryption to provide the shared private key that is later on used for the bulk part of data conversations on an encrypted channel.
Wiki User
∙ 14y ago
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There are two general types of modern cryptography; symmetric cryptography and asymetric (also known as public key) cryptography. Symetric crypto is where both sides have the same shared encryption key, and that key is used to both encrypt and also decrypt any encrypted information. Symmetric crypto is more efficient (faster) than asymmetric crypto, but asymetric crypto works without having to share a key.
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both parties share the same key to encrypt and decrypt- Symmetric encryption means that an encrypted file can be decoded simply by reversing the way it was coded. If we consider it in terms of a padlocked box, the same key that was used to lock it, can be used to open it once again.In terms of files this means that if you encrypt a file using a password, that same password can be used by anyone who knows it, to decrypt the data. The disadvantage of this is that whenever you encrypt a file and send it to someone, you must make sure that person also knows the password you used.This is why asymmetric encryption exists whereby one person can encrypt and send a file to someone else using "public key cryptography". The short definition of this is that encrypted data is not decrypted in the same way which means that there is no need to have a prearranged password.
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