________ encryption requires the same key to both encrypt and decrypt data, while ________ encryption uses separate keys for these operations.
- Bi-directional, Uni-directional, Reciprocal, Differential
- Mutual, Reverse, Single, Dual
- Public, Private, Secret, Shared
- Symmetric, Asymmetric, One-way, Two-way
Symmetric encryption, also known as private-key encryption, uses a single key for both encryption and decryption. In contrast, asymmetric encryption (also called public-key encryption) uses different keys for these operations, typically a public key for encryption and a private key for decryption. Asymmetric encryption provides a higher level of security and is commonly used for secure communication channels and digital signatures.
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