Caesar Cipher Cracker
This JavaScript program automatically cracks messages encrypted with the Caesar cipher.
The program
Instructions
Input the ciphertext, then press Crack
. If the result is not satisfactory, you can carry out a brute force search by pressing the Up
button to cycle through the possible shifts.
Non-letters and case are preserved. The cracking is based on English letter frequencies, so it works best on English text.
Links
- Caesar Cipher
- Wikipedia: Frequency analysis (cryptanalysis)
- Wikipedia: Letter frequencies
- Wikipedia: Caesar cipher
Last modified: 2007-08-20-Mon
Created: 2007-08-18-Sat