Ccifx

A Caesar's Cipher implementation and repository.

Using the cipher

To encrypt messages, call Ccifx.crypt passing a phrase, a key and a cryptographic mode.

iex> Ccifx.crypt("MY SHARONA", 3, :left)
=> :ok

To decrypt the last message using the repository, call Ccifx.decrypt passing a cyptographic mode.

iex> Ccifx.decrypt(:left)
=> "MY SHARONA"

The repository

The repository holds the last call to each cryptographic mode. It stores the encrypted text and the key.

iex> Ccifx.crypt("MY SHARONA", 3, :right)
=> :ok
iex> Ccifx.Repository.retrieve(:right)
=> {3, "PB VKDURQD"}

TO-DO

• Specs
• Documentation
• Tests
• Let users decrypt any message
• Implement :zigzag