The strength of a symmetric encryption is based on the secrecy of the algorithm,but the key can be public.

Name: The strength of a symmetric encryption is based on the secrecy of the algorithm,but the key can be public.
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Quizplus · Accepted Answer

The strength of a symmetric encryption also depends on the secrecy of the key used to encrypt and decrypt the message. Therefore, the key cannot be public for symmetric encryption to remain secure.

The Strength of a Symmetric Encryption Is Based on the Secrecy