= Symmetric-key cryptography
{wiki=Symmetric-key_cryptography}
Symmetric-key cryptography, also known as secret-key cryptography, is a type of encryption where the same key is used for both encryption and decryption of data. In this system, both parties involved in communication share a common key, which must remain confidential between them. \#\#\# Key Characteristics: 1. **Single Key**: Only one key is used for both encrypting and decrypting messages. This makes it efficient in terms of performance.
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