Interactive Identification
Cipher Detective
Paste unknown ciphertext below. The engine will run statistical tests to identify the most likely cryptographic family based on Index of Coincidence, chi-square, and structure.
Awaiting input. Mathematical analysis will appear instantly as you type or paste text.
Limitations
The Detective relies on standard English text frequencies. It will be less accurate for:
- Very short messages (under 20 characters).
- Plaintext in languages other than English.
- Texts heavily skewed with names, acronyms, or non-standard vocabulary.
- Ciphers utilizing nulls or non-standard alphabets.
Cryptanalytic Profile
| Length | - |
|---|---|
| Characters | - |
| IoC | - |
| Base Chi-Square | - |
| Best Shift | - |
| Probable Period | - |