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What are the common algorithms for data encryption?

Created on 2025-07-04 14:25:45
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Common algorithms for data encryption can be categorized into symmetric and asymmetric encryption.

  1. Symmetric Encryption: Uses the same key for encryption and decryption. Examples include:

    • AES (Advanced Encryption Standard): A widely used symmetric algorithm with key sizes of 128, 192, or 256 bits. It is efficient for encrypting large amounts of data.
    • DES (Data Encryption Standard): An older symmetric algorithm with a 56-bit key, now considered insecure due to its small key size.

  2. Asymmetric Encryption: Uses a pair of keys (public and private) for encryption and decryption. Examples include:

    • RSA (Rivest-Shamir-Adleman): A widely used asymmetric algorithm for secure data transmission, digital signatures, and key exchange.
    • ECC (Elliptic Curve Cryptography): Provides strong security with shorter key lengths compared to RSA, making it efficient for resource-constrained environments.

For cloud-based encryption, Tencent Cloud offers services like KMS (Key Management Service) to securely manage encryption keys and integrate with symmetric/asymmetric algorithms for data protection.