Symmetric-key algorithms are a type of encryption method where the same key is used for both encryption and decryption of data. This means that the sender and the receiver must both possess the same secret key, and its security is paramount because anyone who has access to the key can decrypt the data. ### Key Characteristics: 1. **Same Key for Encryption and Decryption**: The same secret key is used for both the processes, which simplifies the encryption and decryption process.
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