Classical Ciphers
Caesar Cipher
Encrypt, decrypt, and brute-force fixed-shift substitution messages.
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Classical Ciphers
Hands-on encryption demos for classical substitution and transposition ciphers.
8 tools in this category
Classical Ciphers
Vigenere Cipher
Encrypt text with repeating keyword shifts and mapping previews.
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Classical Ciphers
Playfair Cipher
Work with digraph encryption using a 5×5 Playfair matrix.
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Classical Ciphers
Rail Fence Cipher
Visualize zig-zag transposition patterns and encoded output.
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Classical Ciphers
Hill Cipher
Encrypt with matrix-based modular arithmetic and invertibility checks.
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Classical Ciphers
Atbash Cipher
Mirror the alphabet with full letter-mapping inspection.
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Classical Ciphers
ROT13 Cipher
Run self-inverse ROT13 conversion and compare with codec behavior.
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Classical Ciphers
Columnar Transposition Cipher
Reorder columns by keyword and inspect the column layout.
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