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Caesar for Android

By Nicolas BERNE Free

Developer's Description

It supplies for now :

- Caesar cipher (Cryptanalysis included, with the possibility to use a convenient cipher wheel),

- Affine cipher (Cryptanalysis included),

- Monoalphabetic substitution cipher with keyword or user-defined alphabet (Cryptanalysis included ***),

- Hill cipher (Matrix sizes : 2x2, 3x3 and 4x4) with the possibility to manage 3 matrices,

- Vigenre/Beaufort cipher with 2 variants (Cryptanalysis included ***),

- "Vigenre + keyword" cipher. It's possible to save the encoding tables in CSV format in the folder CESAR of the device's storage. The keyword permutes the columns of original Trithemius-Ciphertable into another latin quarter.

- "Generalized Vigenre" cipher. It's possible to save and load the encoding/decoding tables in CSV format or the keywords to a text file (protected by a Vigenre key) in the folder CESAR of the device's storage. Every thinkable Encryption-Table (26x26) can be defined by the user (about 5.6 * 10 ^ 691 possibilities !).

You can send a cipher message via SMS or email. You can also call the application when a text message is shared and choose the encoding method.

*** The N-grams for those breakers were downloaded from this very interesting site about cryptography : http://practicalcryptography.com/. Texts in english, french, german, spanish, italian and swedish are concerned.

Full Specifications

What's new in version 3.70


Release August 27, 2020
Date Added August 27, 2020
Version 3.70

Operating Systems

Operating Systems Android
Additional Requirements Requires Android 3.1 and up


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