TwitterCodebreaker

A Swift codebreaking challenge on Twitter!

Standings

Rank	User	Score
1	@0xA1EC	7
2	@BryanColle	7
3	@nikfahl	6
4	@johnhaney	5
5	@ethanjdiamond	4

Summary

Every week, a Tweet with the hashtag "#TwitterCodebreaker" will appear on my timeline (@JUSTINMKAUFMAN).

A mysterious robot has been instructed to watch this Tweet carefully and encrypt all replies with a secret function. Your job is to reverse engineer the secret function driving the robot.

First person to DM me the correct code for the secret function (in Swift) will be announced as the winner!

First place receives 7 points.

Second place receives 5 points.

Third place receives 3 points.

All subsequent correct answers receive 1 point.

The challenges will get harder each week.

Follow me to receive a hint each day that the code remains unbroken!

Instructions

1. Reply to the Tweet, and within a few seconds the robot will reply back with the encrypted version of your Tweet.
2. Send as many replies as you'd like in order to unravel the mystery.
3. When you think you know the code that the robot is using, DM it to: @JUSTINMKAUFMAN.
4. First person to correctly determine the code in the encrypt function wins.

Additional Details

1. The encrypt function is just one line of code.
2. It only depends on Foundation (if it depends on any framework at all).
3. It runs completely locally (i.e. it does not require any network resources to encrypt strings).
4. The screenshot at the top of this README is the actual (redacted) image of the method used for week 1.

Author

Justin Kaufman, jmkauf@gmail.com @JUSTINMKAUFMAN