What type of algorithms require sender and receiver to exchange a secret key that is used to ensure the confidentiality of messages?
- symmetric algorithms
- public key algorithms
- hashing algorithms
- asymmetric algorithms
Explanation: Symmetric algorithms use the same key, a secret key, to encrypt and decrypt data. This key must be pre-shared before communication can occur. Asymmetric algorithms require more processing power and overhead on the communicating devices because these keys can be long in order to avoid being hacked.
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