S4:E1 Data Exchange: Compression, Encryption, and Hashing
Update: 2025-09-08
Description
In this episode we look at Compression, encryption and hashing and offers an educational overview of essential data management concepts. It explains compression methods, differentiating between lossy and lossless types and illustrating techniques like Run Length Encoding and dictionary-based compression. Furthermore, the document discusses encryption, detailing symmetric and asymmetric approaches, alongside basic ciphers such as the Caesar and Vernam ciphers. Finally, it introduces hashing as a one-way function valuable for securing sensitive data like passwords. This resource aims to clarify how data is efficiently stored, transferred, and secured in computer systems.
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