Background:

Your director of communications has become suspicious as of late that your communications are being intercepted by an outside source. Your job is to propose a means to send secure messages to colleagues internally to keep your secrets safe. Your production team are ready to build a system that will enable the encryption to happen seamlessly $($and programmatically$)$

Your job is to decide how to encrypt communications. You should describe the modality for encryption in enough detail for your development team to be able to build and implement the proposed solution. We would like to see a proof$-$of$-$concept $$ either in pseudocode or as a description of the steps required to encrypt and decrypt the data.

The message that we would like you to send as part of this PoC is as follows:

Countless paths one destination

You should describe your methodology$/$approach to encrypting the data in enough detail that an engineer would be able to build, implement and test the implementation using the phrase that you have been given to encode.

Questions:

$1.$ Describe the algorithm that you are proposing in as simple a way as possible. Include steps and stages to describe how it will work.

$2.$ Describe a process by which you would encode and decode the message as a proof$-$of$-$concept. Take the idea from inception through to encoding the message using the encoding method you have chosen and then proceed to describe how such a message would be decoded in a practical way.

$3.$ Describe the strengths and weaknesses of your proposed method and why it is suitable for the scenario given.