Digital Certificate Operation in a Complex Environment

Up: 5. Glossary R - S

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Symmetric encryption See also encryption. Symmetric encryption involves encrypting and de-crypting information using the same key. It is less processor-intense than asymmetric encryption but requires a key exchange at some stage. Keys have to remain secret anda different key may be required for every entity that communicates with you. Therefore, secure encryption using symmetric keys alone does not scale well. Symmetric keysare often exchanged under cover of asymmetric encryption. See also asymmetric encryption.
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