The type of encryption algorithm that uses the same key to encrypt and decrypt data is:
- Encryption is the process of protecting ot securing data by the means of a key or other forms of authorization protocol.
- A symmetric encryption is one where data is protected using the same key for both locking and unlocking.
- Using this kind of encryption, an administrator protects his data using only one key. This method of encryption is usually not secure and can be easily bypassed by a hacker or its data compromised.
- Therefore, the correct answer to the question is symmetric encryption.
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