A cryptosystem is a collection of algorithms used for encryption and decryption to ensure the confidentiality, integrity, and authenticity of information. Below is a list of various cryptosystems categorized based on their type: ### 1. **Symmetric Key Cryptosystems** - **AES (Advanced Encryption Standard)**: A widely used symmetric encryption standard. - **DES (Data Encryption Standard)**: An older symmetric-key method that is now considered insecure.
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