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Knowledge/A Level/H446/01 Computer systems/Compression, Encryption and Hashing

OCR H446/01 Computer systems · 1.3.1

Compression, Encryption and Hashing

Revision notes for OCR A Level Computer Science (H446) 1.3.1 Compression, Encryption and Hashing.

All A Level topics

Revision notes

  • a.Lossy vs lossless compression
  • b.Run length encoding and dictionary coding for lossless compression
  • c.Symmetric and asymmetric encryption
  • d.Different uses of hashing