Provides an easy way to encrypt and decrypt a string using the AES-CBC-256 algorithm.

It runs roughly this functions in order to return a encrypt base64-encoded string: base64(iv + aes_cbc256(sha256(key), iv, data))

Usage

key = "my_secret_key"
data = "my secret data"
digest = Conceal.encrypt(data, key)

case Conceal.decrypt(digest, key) do
  {:ok, decrypted_data} -> decrypted_data
  :error -> :error
end