Monoalphabetic

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2 articles
The Complete History of the Atbash Cipher: From Ancient Hebrew to Modern Cryptography

The Complete History of the Atbash Cipher: From Ancient Hebrew to Modern Cryptography

Discover how ancient Hebrew scribes invented the Atbash cipher in 500 BCE to encrypt 'Babylon' as 'Sheshach' in the Book of Jeremiah, creating humanity's oldest documented encryption system that survives today as a foundational example in cryptography education.

Cipher History12 min readDec 9, 2025
Keyword Cipher History: Complete Guide to Classical Cryptography
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Keyword Cipher History: Complete Guide to Classical Cryptography

Discover the fascinating history of keyword ciphers from 15th-century Renaissance Europe to modern educational applications. Complete guide covering encryption, decryption, cryptanalysis, and real-world examples.

Cipher History25 min readDec 8, 2025