Cryptif.ai

Deployed at | www.cryptif.co.uk |

A Flask web app for decryption using Statistical techniques.

A personal project for me to learn more about machine learning, handling noisy data and cryptanalysis

Functionality

format text page, allows users to handle large strings and format them

removing punctuation
white space
lower case
full format

Cryptanalysis page has a modern user friendly front end which allows users to visualise every characteristic of the page

Frequency comparison bar chart to english language
index of coincidence comparison bar chart
chi squared score of cipher text for:
- monogram
- bigram
- trigram
bhattarayya score of cipher text for:
- monogram
- bigram
- trigram

Encryption page

encrypt several classical cipher types using reformatted pycipher module

Decryption page

decrypt several classical cipher types using reformatted pycipher module

AI page

Implemented KNN model to calculate encryption type

Keyless decryption page

implemented statistical model to calculate most probable key for monoalphabetic ciphers
implemented statistical model to calculate most probable key length and key for polyalphabetic ciphers