February 2020
Beginner
621 pages
19h 34m
English
book
Introduction to Cryptography with Coding Theory, 3rd Edition
by Wade Trappe, Lawrence C. Washington
Content preview from Introduction to Cryptography with Coding Theory, 3rd Edition
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Chapter 24 Error Correcting Codes
In a good cryptographic system, changing one bit in the ciphertext changes enough bits in the corresponding plaintext to make it unreadable. Therefore, we need a way of detecting and correcting errors that could occur when ciphertext is transmitted.
Many noncryptographic situations also require error correction; for example, fax machines, computer hard drives, CD players, and anything that works with digitally represented data. Error correcting codes solve this problem.
Though coding theory (communication over noisy channels) is technically not part of cryptology (communication over nonsecure channels), in Section 24.10 we describe how error correcting codes can be used to construct a public key cryptosystem. ...
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