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Classical cryptography is the name given to the ciphers used through history
before computers became commonplace. These ciphers are commonly called "pen and
paper" ciphers because they were targeting the complexity to be performed by a
normal person with only a pen and some paper.
Common classical ciphers include
- Caesar cipher
- Vigenere cipher
- Substitution cipher
- Transposition cipher
- Bifid and trifid ciphers
As being resistant to computers was not a goal, all of the classical ciphers
provide almost no security today.
If you find this work useful, please cite it as:
title = "Classical cryptography",
author = "Yaltirakli, Gokberk",
journal = "gkbrk.com",
year = "2022",
url = "https://www.gkbrk.com/wiki/classical-cryptography/"
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Gokberk Yaltirakli, "Classical cryptography", September, 2022. [Online]. Available: https://www.gkbrk.com/wiki/classical-cryptography/. [Accessed Sep. 24, 2022].
Yaltirakli, G. (2022, September 24). Classical cryptography. https://www.gkbrk.com/wiki/classical-cryptography/
Gokberk Yaltirakli, Classical cryptography, GKBRK.COM (Sep. 24, 2022), https://www.gkbrk.com/wiki/classical-cryptography/